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Siemens Sentron 3VA Manual

Protection devices molded case circuit breakers with ul and iec certification.
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Table of Contents

   Related Manuals for Siemens Sentron 3VA

   Summary of Contents for Siemens Sentron 3VA

  • Page 3: Manual, 01/2019, L1v30435333

    ___________________ Introduction ___________________ Description ___________________ SENTRON Applications ___________________ Accessories Protection devices 3VA molded case circuit breakers ___________________ with UL and IEC certification Service and maintenance ___________________ Technical specifications Manual ___________________ Appendix ESD guidelines ___________________ List of abbreviations ___________________ Conversion tables 01/2019 L1V30435333-01...
  • Page 4 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.
  • Page 5: Table Of Contents

    Table of contents Introduction ............................. 9 About this documentation ......................9 Product-specific information ....................10 1.2.1 Target readers ........................10 1.2.2 Technical Support ........................10 1.2.3 Reference documents ......................11 Description ............................13 Overview - applications and portfolio ..................13 2.1.1 Applications and possible uses ....................
  • Page 6 Table of contents 2.5.7 Ground-fault protection ......................70 2.5.7.1 Measurement method 1: Vectorial summation (residual) current .......... 70 2.5.7.2 Measurement method 2: Direct detection ................72 2.5.8 Neutral conductor protection (N) .................... 73 2.5.9 Zone-selective interlocking ZSI ....................76 Thermal-magnetic trip unit ..................... 79 2.6.1 Thermal-magnetic trip unit (TMTU) ..................
  • Page 7 Table of contents Connection system ....................... 168 4.3.1 Introduction ........................... 168 4.3.2 General information about cables and busbars ..............168 4.3.3 Connection portfolio for 3VA UL molded case circuit breakers ..........172 4.3.3.1 General overview ........................172 4.3.3.2 Front cable connection......................176 4.3.3.3 Front busbar and compression lug connections ..............
  • Page 8 Table of contents 4.5.6.5 Locking, blocking and interlocking ..................290 4.5.7 Degree of protection ......................291 4.5.7.1 IP degree of protection ......................291 4.5.7.2 NEMA degree of protection ....................291 4.5.8 Accessories .......................... 292 4.5.8.1 Illumination kit ........................292 Motor operator........................293 4.6.1 Elements of the motor operator MO320 ................
  • Page 9 Table of contents 4.11 Test devices .......................... 360 4.11.1 Introduction ........................... 360 4.11.2 The TD300 activation and trip box ..................361 4.11.2.1 Operation and execution of the tripping function ..............362 4.11.2.2 Technical specifications of TD300 ..................364 4.11.3 The TD500 test device ......................364 4.11.3.1 General information, preparations ..................
  • Page 10 Table of contents 6.2.2.9 Test devices ......................... 449 6.2.2.10 Door cover frame ......................... 449 Power losses ........................450 6.3.1 Power losses of 3VA5 molded case circuit breakers ............450 6.3.2 Power losses of 3VA6 molded case circuit breakers ............452 6.3.3 Power loses of 3VA UL molded case switches ..............
  • Page 11: Introduction

    Introduction About this documentation 3VA molded case circuit breakers with UL 489 certification for the North American market The 3VA molded case circuit breakers from the portfolio of SENTRON protection, switching, measuring and monitoring devices ensure the reliable protection of people and property as integral components of efficient power distribution systems.
  • Page 12: Product-specific Information

    The sales contract contains the entire obligation of Siemens. The warranty contained in the contract between the parties is the sole warranty of Siemens. Any statements contained herein do not create new warranties or modify the existing warranty.
  • Page 13: Reference Documents

    ATSE - Modbus Communication Protocol (http://support.automation.siemens.com/ WW/view/en/40761679) Grundlagen der Niederspannungsschalt- — — technik (Fundamentals of Low-Voltage Switchgear and Controlgear), Siemens AG © 2008 Hartmut Kiank, Wolfgang Fruth: ISBN: A19100-L531-B115 — Planungsleitfaden für Energieverteilungs- anlagen (Planning Guide for Power Distribution Plants), Publicis Publishing Schalten, Schützen, Verteilen in...
  • Page 14 Introduction 1.2 Product-specific information 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 15: Description

    Description Overview - applications and portfolio This chapter provides an overview of all 3VA molded case circuit breakers with certification according to the North American standard UL 489 (3VA UL) and shows the areas in which the various molded case circuit breakers are used. The topics discussed in this chapter are listed below: ●...
  • Page 16: Aspects Of The Ul Market - Low-voltage Systems In The Usa

    Aspects of the UL market - Low-voltage systems in the USA This chapter is an excerpt from the document "The secrets of UL". You will find the complete document under (http://w3app.siemens.com/mcms/infocenter/dokumentencenter/ce/Documentsu20Brochures /e20001-a820-p305-v2-7600.pdf). Low-voltage systems in the USA The usual system configurations in the USA are very different from those found in Europe.
  • Page 17 Description 2.1 Overview - applications and portfolio Electric circuits with "straight" and "slash" voltages In the USA, voltages are considered from the power supply company side or the secondary side of the power supply company transformers. The connection (wye or delta) of the electric circuit and the method of grounding play a major role here.
  • Page 18: Portfolio

    Description 2.1 Overview - applications and portfolio 2.1.3 Portfolio The integrated 3VA UL portfolio consists of two different ranges of molded case circuit breakers in five different rated operational current versions (frame sizes). Sizes The new 3VA UL molded case circuit breakers set new standards in flexibility and the variety of modular accessories available.
  • Page 19 Description 2.1 Overview - applications and portfolio 3VA5 molded case circuit breakers The new 3VA5 molded case circuit breakers reliably perform all the tasks required for line protection. Features The key features of the 3VA5 range are: ● Compact design ●...
  • Page 20 Description 2.1 Overview - applications and portfolio 3VA6 molded case circuit breakers The new 3VA6 molded case circuit breakers reliably perform all the tasks required for line protection. This range is designed for applications with more exacting requirements: ● Increased breaking capacity ●...
  • Page 21 Description 2.1 Overview - applications and portfolio Electronic trip unit (ETU) The current sensor of the 3VA6 molded case circuit breaker comprises an iron-cored transformer for the internal power supply and a Rogowski coil for precise sensing and measurement of the current values. Each of these transformers was specifically optimized for its task.
  • Page 22 Description 2.1 Overview - applications and portfolio 100% rated versions of the 3VA UL molded case circuit breaker The US National Electrical Code, NEC recognizes two categories of overcurrent protective devices (OCPD) and has different required load calculations for their application. The two categories are standard OCPDs and OCPDs listed for operation at 100% of their rating (commonly referred to as "100 % rated").
  • Page 23: Detailed Information About Applications And Possible Uses

    Description 2.1 Overview - applications and portfolio 2.1.4 Detailed information about applications and possible uses 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 24: Technical Specifications

    Description 2.1 Overview - applications and portfolio 2.1.5 Technical specifications Applies to I 15 A to 90 A 100 A to 125 A 14 kA 40 A to 90 A 18 kA; 100 A to 125 A 14 kA 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 25 Description 2.1 Overview - applications and portfolio 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 26 Description 2.1 Overview - applications and portfolio G alarm, no G protection (the G function sends an alarm message but does not trip the circuit breaker) Breaking capacities in combination with contactors (SCCR ratings) may differ Integrated instantaneous short-circuit release for self-protection The short-circuit current rating (SCCR rating) is the maximum permissible short-circuit current at the installation location of the MCS in combination with an appropriate additional overload protection device.
  • Page 27 Description 2.1 Overview - applications and portfolio G alarm, no G protection (the G function sends an alarm message but does not trip the circuit breaker) Breaking capacities in combination with contactors (SCCR ratings) may differ Integrated instantaneous short-circuit release for self-protection The short-circuit current rating (SCCR rating) is the maximum permissible short-circuit current at the installation location of the MCS in combination with an appropriate short-circuit protection device.
  • Page 28: Molded Case Circuit Breakers And Accessories In The System

    Description 2.1 Overview - applications and portfolio 2.1.6 Molded case circuit breakers and accessories in the system The new 3VA UL molded case circuit breakers come with a large portfolio of accessory components that – depending on the type of accessory – can be flexibly installed internally or externally regardless of the size of circuit breaker.
  • Page 29 Description 2.1 Overview - applications and portfolio Overview of accessories in the system 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 30: Ergonomic Design

    Description 2.2 Ergonomic design Ergonomic design This chapter provides an overview of the ergonomic design features of the new 3VA UL molded case circuit breakers and explains what makes them so special. The topics discussed in this chapter are listed below: ●...
  • Page 31 Description 2.2 Ergonomic design When the 3VA UL molded case circuit breaker is in the OFF position, it ensures that the circuit is reliably disconnected in all current paths. The clearances dimensioned according to UL 489 ensure that, in the event of overvoltages between input and output, isolation is maintained.
  • Page 32 Description 2.2 Ergonomic design Indication of breaker positions in the draw-out unit The picture below illustrates the colors used to indicate the breaker position in the draw-out unit: The breaker position is indicated in a window of the draw-out unit and is clearly color-coded, enabling immediate identification of the current position of the molded case circuit breaker.
  • Page 33: Ergonomic Design Of Circuit Breakers, Handles And Control Elements

    Description 2.2 Ergonomic design Motor operator for remote control 3VA UL molded case circuit breakers can also be controlled remotely. Whether the circuit breaker is controlled from "just" the other side of the closed panel door, or the breaker is switched on via a control room, operator panel, etc., is irrelevant.
  • Page 34 Description 2.2 Ergonomic design Clear status indication The possible breaker positions of manual rotary operators are listed below: ● ON - red marking ● TRIP - yellow marking ● OFF - green marking The handle clearly engages in one of these positions depending on the status of the molded case circuit breaker.
  • Page 35 Description 2.2 Ergonomic design Operator kit with Bowden cable (Max-Flex operator) The Max-Flex operator is a hand lever operator for operating the breaker from the outside of the control panel. The handle is connected to the switching mechanism via a Bowden cable. Color-coded control elements The control elements on the thermal-magnetic and electronic trip units are color-coded.
  • Page 36: Wide Range Of Accessories

    Description 2.2 Ergonomic design 2.2.3 Wide range of accessories The internal accessories (e.g. alarm and auxiliary switches, auxiliary releases, etc.) all belong to one family and can be installed within the 3VA5 and 3VA6 ranges regardless of the circuit breaker size. Installation is carried out quickly and easily by simply snapping on and screwing the connecting cables Through color and mechanical coding and corresponding information found on the inside of the accessory cover, installation at the right place in the circuit breaker is ensured.
  • Page 37 Description 2.2 Ergonomic design A system of color coding has been used to clearly identify the specific functions of individual accessories: The cylinder lock and communication accessories shown next to the internal accessories are explained in chapters Locking and interlocking (Page 302) and Communication and system integration (Page 327).
  • Page 38: Connection Technology

    Description 2.2 Ergonomic design 2.2.4 Connection technology A large selection of terminals and connectors are available for the new range of 3VA UL molded case circuit breakers. The supported cable cross-sections are based on the size of the molded case circuit breaker and the cable terminals used.
  • Page 39 Description 2.2 Ergonomic design Cables and busbars The new range of 3VA UL molded case circuit breakers are designed for different cables and busbars: ● Different cable types, e.g. ① – Circular conductor - UL cable class Solid ② – Stranded - UL cable class B ③...
  • Page 40: Technical Details

    Description 2.3 Technical details Technical details This chapter provides an overview of the technical details of the 3VA UL molded case circuit breakers. The topics discussed in this chapter are listed below: ● Circuit breaker identification ● Operation ● Current limitation ●...
  • Page 41 Description 2.3 Technical details Circuit breaker labeling Each 3VA UL molded case circuit breaker is labeled with all UL-required information and is thus clearly identifiable: ① ④ "Connection information" adhesive label Adhesive label insert (in accessory compartment) ② ⑤ Connection socket for EFB300 external function "Detailed information on installed connection box and MMB300 maintenance mode box on technology"...
  • Page 42 Description 2.3 Technical details Front panel: Labeling The following information is displayed on the front panel of the circuit breaker: ① ⑨ Circuit breaker designation Product version ② ⑩ UL Type Listing Circuit breaker article number (MLFB) ③ ⑪ CE approval mark Trip unit designation ④...
  • Page 43 This code can be scanned with a smartphone or a tablet PC. For the full range of QR code functions, use the "Industry Support" app supplied free of charge by Siemens. All relevant product information regarding the molded case circuit breaker (e.g. operating instructions, characteristic curves, FAQs, etc.) can be quickly accessed and viewed in this...
  • Page 44 Description 2.3 Technical details HACR type information HACR stands for heating, air conditioning and refrigeration. The information on the circuit breaker states that the protective device may be used for overcurrent protection of corresponding systems. HACR applications are a known example of installations with motor groups. Many modern heating systems operate with fans for exhaust air from combustion systems, exhaust control and ventilation systems for hot air.
  • Page 45 Description 2.3 Technical details "Connection information" adhesive label The "Connection information" label is attached on the side and contains the following information: ① UL, CSA and NOM, as well as CE, CCC, etc. approval marks, if valid for this circuit breaker ②...
  • Page 46 Description 2.3 Technical details 2D matrix code of production This is a production code that contains the article number of the device, production date, production facility and other information in encoded form. This code can also be scanned with the free "Industry Support" app for smartphone and tablet PC.
  • Page 47 Description 2.3 Technical details "Detailed information on installed connection technology" adhesive label This adhesive label accompanies the various terminals. At this time, 3VA UL molded case circuit breakers can only be ordered without preassembled connection technology, i.e. connection terminals or terminal bars for the incoming and outgoing sides must be ordered separately for each circuit breaker.
  • Page 48 Description 2.3 Technical details "Internal accessories" adhesive label You can make a note of the number of installed accessory components on the "Internal accessories" adhesive label. This will enable you to ascertain which accessories are installed without removing the accessory cover and to use the information, for example, to reorder components.
  • Page 49: Operation

    Description 2.3 Technical details 2.3.2 Operation ① ③ ON: Main contacts closed OFF: Main contacts open ② ④ TRIP: Switching position following a trip PUSH TO TRIP: A mechanical trip is initiated using the button The main contacts of the molded case circuit breakers are opened and closed by means of a handle mounted on the front of the unit.
  • Page 50: Current Limitation

    Description 2.3 Technical details 2.3.3 Current limitation The term "current limitation" refers to the action of limiting the peak value of the prospective impulse short-circuit current i to a lower let-through current i The compact design of the breakers has been made possible by their excellent current limiting capabilities.
  • Page 51 Description 2.3 Technical details Rotary double-contact system To achieve excellent current limiting, the 3VA UL molded case circuit breakers are equipped with a rotary double-contact system that opens dynamically - on its own - above the specified disengaging currents, on the principle of magnetic repulsion, before the expected peak value of the short-circuit current is reached.
  • Page 52: Standards And Guidelines

    Description 2.4 Standards and guidelines Standards and guidelines This chapter provides you with an overview of the standards and guidelines that are met with the 3VA UL molded case circuit breakers The topics discussed in this chapter are listed below: ●...
  • Page 53: Certificates

    (Derating (Page 454)). Please contact Siemens concerning operating conditions that are outside the values specified in the derating table. The permissible storage temperature in original Siemens packaging is between -40 °C and +80 °C. Special climatic requirements 3VA UL molded case circuit breakers can also be used under harsh conditions.
  • Page 54 Description 2.4 Standards and guidelines The following standards-related criteria are complied with: ● IEC / EN 60068-2-2 "Bd" and IEC / EN 60068-2-1 "Ab": Temperature range: -25 °C … +70 °C ● IEC / EN 60068-2-30 "Db" Humid heat up to +55 °C and air humidity up to 95 % ●...
  • Page 55: Permissible Mounting Positions And Mounting Positions With Accessories

    Description 2.4 Standards and guidelines 2.4.4 Permissible mounting positions and mounting positions with accessories The tested mounting positions for 3VA UL molded case circuit breakers are illustrated below. Please adhere to local codes and standards for specific application regulations. 3VA51: A motor operator cannot be used with DIN rail mounting Not allowed by NEC 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 56: Safety Clearances (for Iec Applications)

    Description 2.4 Standards and guidelines 2.4.5 Safety clearances (for IEC applications) During a short-circuit interruption, high temperatures, ionized gases and high pressures occur in and above the arcing chambers of the molded case circuit breaker. For this reason, defined minimum clearances must be adhered to during installation between the molded case circuit breakers and the mounting plates, conductor bars and other protection systems placed in the immediate vicinity.
  • Page 57 Description 2.4 Standards and guidelines Minimum clearance for 3VA5 molded case circuit breakers: Can be used for connection methods: box terminal, screw-type terminal, internal wire connector, and rear terminals Can be used for connection methods: wire connector large, bus connectors extended, and bus connectors offset Is not permitted in this voltage range for IEC applications Minimum clearance for 3VA6 molded case circuit breakers: Can be used for connection methods: box terminal, screw-type terminal, internal wire connector, and rear terminals...
  • Page 58 Description 2.4 Standards and guidelines Note In addition to the clearances stated above, any insulating equipment that might be required must also be considered, see chapter Insulating equipment (Page 203). If the molded case circuit breaker is installed in a system whose connection type and operational voltage does not correspond to the specified insulation measures, a type test is required.
  • Page 59 Description 2.4 Standards and guidelines Safety clearances between molded case circuit breakers Generally, no minimum clearance needs to be observed between the molded case circuit breakers placed side-by-side. For more details please refer to the relevant operating instructions of the circuit breakers. The following safety clearances apply to molded case circuit breakers installed directly on top of each other: See tables below for minimum clearance...
  • Page 60 ② Fixing of busbar Recommended maximum clearance for 3VA5 molded case circuit breakers The values for the 3VA5 molded case circuit breakers are available from Siemens on request. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 61: Breaker Venting

    Description 2.4 Standards and guidelines Recommended maximum clearance for 3VA6 molded case circuit breakers: 2.4.6 Breaker venting Adequate venting space must be taken into account during planning and installation of the molded case circuit breakers. In particular, the following must be observed: ●...
  • Page 62: Minimum Enclosure Dimensions

    Description 2.4 Standards and guidelines 2.4.7 Minimum enclosure dimensions The 3VA UL molded case circuit breakers are tested in appropriate steel enclosures as per UL 489. The minimum enclosure dimensions are summarized in the following tables by size. Minimum enclosure height Minimum enclosure width Minimum enclosure depth Minimum enclosure dimensions for 3VA5 molded case circuit breakers:...
  • Page 63: Ip Degrees Of Protection

    Description 2.4 Standards and guidelines 2.4.8 IP degrees of protection The 3VA UL molded case circuit breakers meet the following IP protection classes as defined by IEC 60529 and IEC 60947-1, Annex C: Degree of protection IP30 is achieved when a 3VA UL molded case circuit breaker is installed in a switchboard with a door cutout including cover frame (see below).
  • Page 64: Environmental Protection

    Description 2.4 Standards and guidelines 2.4.9 Environmental protection The 3VA UL molded case circuit breakers already meet the requirements of the European RoHS Directive 2011/65/EU (Restriction of the use of certain hazardous substances in electrical and electronical equipment) even though these products will not fall under this directive until July 22, 2019.
  • Page 65: Protection Functions

    Description 2.5 Protection functions Protection functions This chapter provides an overview of the protection system of 3VA UL molded case circuit breakers. The topics discussed in this chapter are listed below: ● Description of functions ● Overload protection (L) ● Short-time delayed short-circuit protection (S) ●...
  • Page 66: Description Of Functions

    Description 2.5 Protection functions 2.5.1 Description of functions The protection function performed by the molded case circuit breaker in the power distribution network is defined by the choice of trip unit. There are two different types of trip unit, i.e. thermal-magnetic (TMTU) and electronic (ETU): 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 67 Description 2.5 Protection functions 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 68: Characteristic Curves

    Description 2.5 Protection functions 2.5.2 Characteristic curves To design a low-voltage switchboard installation in accordance with the valid rules, the system planner needs to select the protection settings of the molded case circuit breakers. The settings selected for the trip unit of a molded case circuit breaker depend on the type of equipment to be protected, e.g.
  • Page 69: Guide To Setting The Tripping Characteristic

    Description 2.5 Protection functions 2.5.3 Guide to setting the tripping characteristic Supplementary conditions The settings selected for the trip unit of a molded case circuit breaker depend on the technical environment (e.g. switchboard and applications) and the type of equipment to be protected.
  • Page 70: Overload Protection (l)

    Description 2.5 Protection functions Setting the parameters for electronic trip units ETU 5-series and 8-series Trip units of the ETU 5-series and 8-series are equipped with an LCD display and operator buttons. These can be used to change the parameters. The powerconfig software can also be used to input parameter settings.
  • Page 71: Short-time Delayed Short-circuit Protection (s)

    Description 2.5 Protection functions 2.5.5 Short-time delayed short-circuit protection (S) The ID letter for the short-time delayed short-circuit protection is "S" (stands for "Short-time (protection)"). The S function of the trip unit can be used to implement time-selective short- circuit tripping in low-voltage networks in which multiple molded case circuit breakers are installed in series.
  • Page 72: Ground-fault Protection

    Description 2.5 Protection functions 2.5.7 Ground-fault protection The ID letter for ground-fault protection is "G" (stands for "ground fault"). The G protection detects residual currents between phases and grounded, electrically conductive parts. The ground-fault protection function responds if the ground fault current exceeds the set tripping current I for the set delay period t Like for the short-time delayed short-circuit protection, the delay time of the ground fault...
  • Page 73 Description 2.5 Protection functions Ground-fault detection in unbalanced systems The neutral conductor current is measured directly and in the case of 3-pole molded case circuit breakers only for the ground-fault protection, but in the case of 4-pole circuit breakers the neutral conductor current is also evaluated for the neutral conductor protection. The trip unit calculates the ground-fault current using the three phase currents and the neutral conductor current for the vectorial summation.
  • Page 74: Measurement Method 2: Direct Detection

    Description 2.5 Protection functions 2.5.7.2 Measurement method 2: Direct detection In this case, an external current transformer is installed directly in the grounded neutral point of the transformer. When the set ground-fault current is reached, a message is directly output (ETU556 and ETU856) or the circuit breaker is tripped (ETU560 and ETU860). Note This measuring method must be activated explicitly in the ETU: On the display under menu item "GF M", switch over from "rES"...
  • Page 75: Neutral Conductor Protection (n)

    Description 2.5 Protection functions 2.5.8 Neutral conductor protection (N) The ID letter for neutral conductor protection is "N". The neutral conductor protection system protects the neutral conductor against overloads and short circuits. The setting value of the current is designated with I , the associated setting time is identical to t Note...
  • Page 76 Description 2.5 Protection functions Neutral conductor protection With rated current I ≤ 40 A: I = 40 % … 100 % I With rated current I ≤ 100 A: I = 20% … 100% I Starting from rated current I ≥...
  • Page 77 Description 2.5 Protection functions Example of a neutral conductor protection characteristic ① Response threshold of the neutral conductor protection ② Response threshold of the long-time delayed protection Adjustment of neutral conductor protection settings The tripping current I can be adjusted: ●...
  • Page 78: Zone-selective Interlocking Zsi

    Backward compatibility The ZSI function of 3VA UL molded case circuit breakers is compatible with the ZSI functions of Siemens 3VL molded case circuit breakers and 3WL air circuit breakers. 3VA molded case circuit breakers with UL and IEC certification...
  • Page 79 Description 2.5 Protection functions Operating principle The diagram below demonstrates the operating principle of zone-selective interlocking: - - - Communication cable "Virtual" tripping time of I protection Output, transmits the blocking signal Delay time setting of S protection Input, receives the blocking signal Delay time of all molded case circuit breakers which detect the short circuit but do not receive a blocking signal when ZSI is activated...
  • Page 80 Description 2.5 Protection functions Fault 1 If the short-circuit current is sufficiently large, the trip units of molded case circuit breakers Q41, Q33, Q22 and Q11 are activated. Since Q41 clears the fault within t = 10 ms, none of the other molded case circuit breakers trips even though Q41 has no ZSI and cannot therefore transmit a blocking signal to Q33.
  • Page 81: Thermal-magnetic Trip Unit

    Description 2.6 Thermal-magnetic trip unit Thermal-magnetic trip unit 2.6.1 Thermal-magnetic trip unit (TMTU) A thermal-magnetic trip unit consists of a thermal trip unit for protecting against overload, and a magnetic trip unit for protecting against short circuits. Both trip units are series- connected.
  • Page 82: Electronic Trip Unit

    Description 2.7 Electronic trip unit Electronic trip unit 2.7.1 Electronic trip unit (ETU) An electronic trip unit is based on the following concepts: ● Complete measurement of the current in the phases L1, L2 and L3, with N and currents to ground optional ●...
  • Page 83: Connections

    One method to satisfy this requirement is to provide energy-reducing maintenance switching with local status indicator. The Siemens DAS when used with a remote external switch meets this requirement. 3VA6 molded case circuit breakers and Dynamic Arc Sentry All 3VA6 molded case circuit breakers are equipped with the Dynamic Arc Sentry mode (DAS mode).
  • Page 84 Description 2.7 Electronic trip unit All molded case circuit breakers with electronic trip units (ETUs 3-series, 5-series and 8- series) receive the signal for switchover of the protection parameters to DAS mode via the MMB300 maintenance mode box applied with the appropriate control scheme. You can find more information about the MMB300 maintenance mode box in chapter MMB300 maintenance mode box (Page 351).
  • Page 85: Protection Functions

    Description 2.7 Electronic trip unit 2.7.4 Protection functions Available in a version with external current transformer for N conductor or 4-pole breaker 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 86: Operator Controls

    Description 2.7 Electronic trip unit 2.7.5 Operator controls The following figure shows the available ETU types of the 3VA6 molded case circuit breakers. You can decide which ETU to select according to the area of application. ① ③ ⑤ Name of the ETU Front interface Pushbuttons ②...
  • Page 87 Description 2.7 Electronic trip unit LED displays The following table explains what the LED displays mean: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 88 Description 2.7 Electronic trip unit ETU 3-series units 3-series electronic trip units are equipped with rotary selector switches. A description of the operating principle of the rotary selector switches and operating instructions can be found in chapter Guide to setting the tripping characteristic (Page 67). Displays on ETU 5-series and 8-series units 5-series and 8-series electronic trip units have an LCD display.
  • Page 89 Description 2.7 Electronic trip unit The following table explains what functions are performed by the buttons next to the display: Displays on ETU 5-series and 8-series units The basic structure comprises the following displays: ● Standard display ● Alarm display ●...
  • Page 90 Description 2.7 Electronic trip unit 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 91 Description 2.7 Electronic trip unit Standard display Alarm display Active alarms are displayed consecutively in screens AV1 … AV5. If no alarms are active, these screens are concealed. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 92 Description 2.7 Electronic trip unit Measured value display The table below explains the measured value display: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 93 Description 2.7 Electronic trip unit Parameter display The table below explains the parameter display: Dependent on the rated current of the molded case circuit breaker and the ETU version 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 94 Description 2.7 Electronic trip unit Setting and changing parameters 1. Use the arrow keys to navigate to the correct display. 2. Press the <OK> button. → Edit mode is active. Activation is confirmed by display of "pencil" symbol. 3. Use the arrow keys to adjust the parameter setting. 4.
  • Page 95 Description 2.7 Electronic trip unit Diagnostics display When a TD500 test device is connected, you can use it to initiate a test. The following screen appears when a TD500 is connected. The bar flashes at a frequency of 0.5 Hz. The bar travels from left to right while testing is in progress.
  • Page 96: Load Acceptance And Load Shedding - Load Management

    Description 2.7 Electronic trip unit 2.7.6 Load acceptance and load shedding - load management 3VA UL molded case circuit breakers equipped with an ETU 3-series or higher series provide two current thresholds for the purpose of implementing a local load management function.
  • Page 97: Measuring With A Rogowski Coil

    Description 2.7 Electronic trip unit 2.7.7 Measuring with a Rogowski coil The Rogowski coil is a toroidal coil without a ferromagnetic core. It is used as a component in electronic measuring devices to measure alternating current. Advantages of the current sensor: ●...
  • Page 98 Description 2.7 Electronic trip unit The following table provides an overview of the setting values: Depending on ETU version Value can be read Value can be edited 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 99 Description 2.7 Electronic trip unit Depending on ETU version Value can be displayed/read 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 100 Description 2.7 Electronic trip unit Depending on ETU version Value can be displayed/read 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 101: Applications

    Applications Use of the 3VA UL molded case circuit breakers in line protection 3.1.1 Applications in line protection The main applications of the circuit breakers as line protection components are: ● Feeder circuit breaker of machines ● Branch circuit breaker for predominantly resistive loads ●...
  • Page 102 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Suitable 3VA UL molded case circuit breakers and trip units 3VA UL molded case circuit breakers equipped with the following trip units are suitable for use in line protection: ●...
  • Page 103 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Overview of the trip units 9th and 10th digit of article number, e.g. 3VA6115-5JP31-0AA0 Neutral conductor protection See Use of the 3VA UL molded case circuit breaker as a molded case switch (MCS) (Page 138) 0.5 (50%) cannot be set for molded case circuit breakers with rated operational current 40 A 0.2 (20%) cannot be set for molded case circuit breakers with rated operational current 40 A 3VA molded case circuit breakers with UL and IEC certification...
  • Page 104: Versions Of The Trip Units

    Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection 3.1.2 Versions of the trip units 3.1.2.1 Thermal-magnetic trip units TMTUs for line protection applications Derating Thermal-magnetic trip units employ a temperature-dependent bimetal to provide overload protection.
  • Page 105 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection TM210 parameters: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 106 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Thermal-magnetic trip unit TM230 LI Line protection FTAM - function LI The thermal-magnetic trip unit TM230 has: ● Fixed parameter setting I for overload protection (L) ●...
  • Page 107: Electronic Trip Units

    Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection 3.1.2.2 Electronic trip units ETUs for line protection applications The following electronic trip units are suitable for use in line protection applications: ● ETU320 LI ● ETU330 LIG ●...
  • Page 108 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Line protection - function LI The electronic trip unit ETU320 has: ● Adjustable parameter settings I and t for overload protection (L) ● Adjustable parameter setting I for instantaneous short-circuit protection (I) ●...
  • Page 109 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Long-time delay setting values - t Instantaneous pickup setting values - I Neutral current setting values - I 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 110 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Overload protection L: Adjustable in 10 steps from 0.4 to 1.0 x I • 0.4 / 0.5 / 0.6 / 0.7 / 0.75 / 0.8 / 0.85 / 0.9 / 0.95 / 1.0 Adjustable in 10 steps from 0.5 to 12 /15 s or 17 s: •...
  • Page 111 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Electronic trip unit ETU330 LIG ETU330 LIG 3-pole: ETU330 LIG 4-pole: Line protection - function LIG The electronic trip unit ETU330 has: ● Adjustable parameter settings I and t for overload protection (L) ●...
  • Page 112 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Current setting values - I Long-time delay setting values - t Instantaneous pickup setting values - I 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 113 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Ground fault pickup setting values - I Neutral current setting values - I Overload protection L: Adjustable in 10 steps from 0.4 to 1.0 x I •...
  • Page 114 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Instantaneous short-circuit protection I: Adjustable in 10 steps from 1.5 to 9 / 10 / 11 / 12 x I (dependent on the frame • size) Ground-fault protection G: Adjustable in 5 steps of 0.2 / 0.25 / 0.4 / 0.6 to 1.0 x I •...
  • Page 115 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Electronic trip unit ETU350 LSI ETU350 LSI 3-pole: ETU350 LSI 4-pole: Line protection - function LSI The electronic trip unit ETU350 has: ● Adjustable parameter settings I and t for overload protection (L) ●...
  • Page 116 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Current setting values - I Long-time delay setting values - t Instantaneous pickup setting values - I 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 117 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Short-time pickup setting values - I Short-time delay setting values - t Neutral current setting values - I 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 118 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Overload protection L: Adjustable in 10 steps from 0.4 to 1.0 x I • 0.4 / 0.5 / 0.6 / 0.7 / 0.75 / 0.8 / 0.85 / 0.9 / 0.95 / 1.0 Adjustable in 10 steps from 0.5 to 12 /15 s or 17 s: •...
  • Page 119 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection 5-series and 8-series electronic trip units Parameter input via display unit With 5-series and 8-series electronic trip units, it is possible to set more parameters and scale the selection of parameters more finely than for 3-series trip units.
  • Page 120 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Electronic trip unit ETU820 LI ETU820 LI 3-pole and 4-pole: Line protection - function LI The electronic trip unit ETU820 has: ● Adjustable parameter settings I and t for overload protection (L) ●...
  • Page 121 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection ETU820 parameters, 4-pole Overload protection L: Adjustable from 0.4 to 1.0 x I in absolute current values • = 40 A: In steps of 0.5 A ≥...
  • Page 122 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Electronic trip unit ETU830 LIG ETU830 LIG 3-pole and 4-pole Line protection - function LIG The electronic trip unit ETU830 has: ● Adjustable parameter settings I and t for overload protection (L) ●...
  • Page 123 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection ETU830 parameters, 4-pole Overload protection L: Adjustable from 0.4 to 1.0 x I in absolute current values • = 40 A: In steps of 0.5 A ≥...
  • Page 124 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Electronic trip units ETU550 LSI and ETU850 LSI ETU550 LSI 3-pole and 4-pole units: ETU850 LSI 3-pole and 4-pole units: Line protection - function LSI The electronic trip units ETU550 and ETU850 have: ●...
  • Page 125 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection ETU550 / ETU850 parameters (3-pole version): only 3-pole version with external current transformer for N conductor ETU550 / ETU850 parameters (4-pole version): Overload protection L: Adjustable from 0.4 to 1.0 x I in absolute current values •...
  • Page 126 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Short-time delayed short circuit protection S: Adjustable from 0.6 to 9 / 10 x I • < 40 A: In steps of 0.5 A ≥ 100 A: In steps of 1 A Adjustable from 0.05 to 0.5 s: •...
  • Page 127 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Electronic trip units ETU556 LSI G (alarm-only) and ETU856 LSI G (alarm-only) ETU556 LSI(G) 3-pole and 4-pole: ETU856 LSI(G) 3-pole and 4-pole: Line protection - function LSI(G) The electronic trip units ETU556 and ETU856 have: ●...
  • Page 128 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection ETU556 / ETU856 parameters, 3-pole: only 3-pole version with external current transformer for N conductor ETU556 / ETU856 parameters, 4-pole: Overload protection L: Adjustable from 0.4 to 1.0 x I in absolute current values •...
  • Page 129 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Short-time delayed short circuit protection S: Adjustable from 0.6 to 9 / 10 x I • = 40 A: In steps of 0.5 A ≥ 100 A: In steps of 1 A Adjustable from 0.05 to 0.5 s •...
  • Page 130 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Electronic trip units ETU560 LSIG and ETU860 LSIG ETU560 LSIG 3-pole and 4-pole units: ETU860 LSIG 3-pole and 4-pole units: Line protection - function LSIG The electronic trip units ETU560 and ETU860 have: ●...
  • Page 131 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection ETU560 / ETU860 parameters (3-pole version): only 3-pole version with external current transformer for N conductor ETU560 / ETU860 parameters (4-pole version): Overload protection L: Adjustable from 0.4 to 1.0 x I in absolute current values •...
  • Page 132 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Short-time delayed short circuit protection S: Adjustable from 0.6 to 9 / 10 x I • = 40 A: In steps of 0.5 A ≥ 100 A: In steps of 1 A Adjustable from 0.05 to 0.5 s •...
  • Page 133 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection Neutral conductor protection N: The neutral conductor protection function is available only for 3-pole molded case circuit breakers with external current transformer for N conductor for 4-pole molded case circuit breakers.
  • Page 134: Overview Of 3va Ul Molded Case Circuit Breakers In Line Protection

    Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection 3.1.3 Overview of 3VA UL molded case circuit breakers in line protection Applies to I 15 A to 90 A 100 A to 125 A 14 kA 40 A to 90 A 18 kA;...
  • Page 135 Applications 3.1 Use of the 3VA UL molded case circuit breakers in line protection For the rated ultimate short-circuit breaking capacity and rated service short-circuit breaking capacity with direct current, see chapter Use of 3VA UL molded case circuit breaker in DC systems (Page 141) .
  • Page 136: Use As Motor Circuit Protector (mcp) For Starter Combinations

    These can be specially matched to the motor. Siemens offers two versions of the 3VA UL motor circuit protectors: ● Magnetic trip units from the 3VA5 series in sizes 125 A and 250 A with a magnetic setting range from 3 to 12 x I ●...
  • Page 137 For the relevant short-circuit current ratings (SCCR ratings) of the combination of contactor and overload relay, please refer to the corresponding UL certificates for contactor and overload relay. These can be found in the Service and Support Portal (https://support.industry.siemens.com/cs/ww/en/view/29755649). 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 138 Applications 3.2 Use as Motor Circuit Protector (MCP) for starter combinations TM120M magnetic trip unit Starter protection (motor circuit protector) AM - function I The TM120M magnetic trip unit has an adjustable short circuit release I TM120M parameters: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 139 Applications 3.2 Use as Motor Circuit Protector (MCP) for starter combinations ETU310M electronic trip unit ETU310M 3-pole ETU310M parameters: The parameters are selected with the setting knob. The diagram below shows the possible selections. The values for the respective setting are listed in the following table. Instantaneous short-circuit protection I: ●...
  • Page 140: Use Of The 3va Ul Molded Case Circuit Breaker As A Molded Case Switch (mcs)

    Applications 3.3 Use of the 3VA UL molded case circuit breaker as a molded case switch (MCS) Use of the 3VA UL molded case circuit breaker as a molded case switch (MCS) Molded case switches are used as: ● Disconnectors in subdistribution and final distribution boards ●...
  • Page 141 Applications 3.3 Use of the 3VA UL molded case circuit breaker as a molded case switch (MCS) Technical specifications of molded case switch 2-pole circuit breaker in 3-pole frame The short-circuit current rating (SCCR rating) is the maximum permissible short-circuit current at the installation location of the molded case switch when a corresponding overload protection device is used Integrated instantaneous short-circuit release for self-protection...
  • Page 142: Compatibility Of 3va Ul Molded Case Switch And Accessories

    Applications 3.3 Use of the 3VA UL molded case circuit breaker as a molded case switch (MCS) 3.3.1 Compatibility of 3VA UL molded case switch and accessories The 3VA UL molded case switches are derived from the molded case circuit breakers and share the following: ●...
  • Page 143: Use Of 3va Ul Molded Case Circuit Breaker In Dc Systems

    Applications 3.4 Use of 3VA UL molded case circuit breaker in DC systems Use of 3VA UL molded case circuit breaker in DC systems 3.4.1 Introduction The main applications for 3VA circuit breakers in DC installations or systems are: ● Public transport systems, e.g. electric cars, underground rail networks and streetcars ●...
  • Page 144: Variants

    Applications 3.4 Use of 3VA UL molded case circuit breaker in DC systems 3.4.2 Variants The same thermal-magnetic trip units used as line protection devices in AC installations are also available for protecting DC installations. However, a correction factor must be applied to the magnetic trip unit, relative to the actual current rating.
  • Page 145: Breaking Capacity With Direct Current

    Applications 3.4 Use of 3VA UL molded case circuit breaker in DC systems 3.4.3 Breaking capacity with direct current 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 146: Recommended Circuits For Dc Systems Ul

    Applications 3.4 Use of 3VA UL molded case circuit breaker in DC systems 3.4.4 Recommended circuits for DC systems UL 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 147 Applications 3.4 Use of 3VA UL molded case circuit breaker in DC systems Note 2-pole version in 3-pole frame (2(3)-pole) Only the outer poles may be used (pole 1/2 and pole 5/6). 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 148: Recommended Circuits For Dc Systems Iec

    Applications 3.4 Use of 3VA UL molded case circuit breaker in DC systems 3.4.5 Recommended circuits for DC systems IEC Ground-fault monitoring 750 V DC is not a listed voltage according to UL 489 Note DC 2-pole (all-pole disconnection), grounded system The grounded pole must always be assigned to the individual conducting path, so that in the event of a ground fault there are always 2 conducting paths in series in a circuit with 3-pole molded case circuit breakers, and 3 conducting paths in series in a circuit with 4-pole molded...
  • Page 149 Applications 3.4 Use of 3VA UL molded case circuit breaker in DC systems Note 2-pole version in 3-pole frame (2(3)-pole) Only the outer poles may be used (pole 1/2 and pole 5/6). Further circuits are available on request. See also Insulating equipment (Page 203) 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 150: Use Of 3va Ul Molded Case Circuit Breakers In It Systems According To Iec 60947-2

    The Siemens 3VA UL molded case circuit breakers for line protection, with thermal-magnetic and electronic trip units, are suitable for use in IT systems.
  • Page 151: Fault Situation

    Applications 3.5 Use of 3VA UL molded case circuit breakers in IT systems according to IEC 60947-2 3.5.3 Fault situation The most critical fault for molded case circuit breakers in ungrounded IT systems is a double-phase-to-ground fault on the infeed and load ends of the molded case circuit breaker. If this fault occurs, the entire phase-to-phase voltage is applied across one pole of the molded case circuit breaker.
  • Page 152 Applications 3.5 Use of 3VA UL molded case circuit breakers in IT systems according to IEC 60947-2 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 153: Accessories

    Accessories Overview - Accessories for 3VA UL molded case circuit breakers You can adapt the 3VA UL molded case circuit breakers to their respective tasks with a comprehensive range of accessories. The table below shows the 3VA UL molded case circuit breakers in which the accessories can be installed and which sizes are covered by the same accessory component: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 154: Internal Accessories

    Accessories 4.2 Internal accessories Internal accessories 4.2.1 Mounting locations of 3VA UL molded case circuit breakers The portfolio of internal accessories includes: ● Auxiliary switches ● Alarm switches ● Auxiliary releases ● COM060 communication module ● 24 V module ● Cylinder lock (type Ronis) The following tables show the alternative mounting locations for internal accessories, which depend on the size and pole number of the circuit breaker.
  • Page 155 Accessories 4.2 Internal accessories 3VA5 molded case circuit breakers: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 156 Accessories 4.2 Internal accessories 3VA6 molded case circuit breakers: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 157 Accessories 4.2 Internal accessories 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 158: Auxiliary And Alarm Switches

    Accessories 4.2 Internal accessories 4.2.2 Auxiliary and alarm switches The auxiliary and alarm switches for the 3VA UL molded case circuit breaker form a single family. They can be installed in all sizes of all circuit breakers up to 600 A. The auxiliary and alarm switches can be very simply snapped into place and connected up in accessory compartments provided on the front panel of the unit to the left and right of the handle.
  • Page 159 Accessories 4.2 Internal accessories The diagram below uses the example of an ET200S to illustrate the conventional method of connecting the electronics-compatible auxiliary switch AUX, the trip alarm switch TAS and the motor operator MO320 to a distributed I/O unit. Further information about contact reliability can be found at the end of this chapter.
  • Page 160 Accessories 4.2 Internal accessories Electrical alarm switches EAS Electrical alarm switches are operated as soon as the main contacts of the molded case circuit breaker open in the event that the breaker is tripped by the ETU. They indicate the following conditions: ●...
  • Page 161: Contact Sequence Diagrams

    Accessories 4.2 Internal accessories 4.2.3 Contact sequence diagrams Main contacts open Auxiliary contacts open Contacts closed 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 162: Technical Specifications Of Auxiliary And Alarm Switches

    Accessories 4.2 Internal accessories 4.2.4 Technical specifications of auxiliary and alarm switches Safe separation in the case of side-by-side construction of auxiliary switches and auxiliary releases only up to 440 V and in systems up to an impulse voltage withstand level of 4 kV HP switches without adjacent switches;...
  • Page 163 Accessories 4.2 Internal accessories In combination with manual switching operations, but not when motor operators are used 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 164: Auxiliary Releases

    Accessories 4.2 Internal accessories 4.2.5 Auxiliary releases Auxiliary releases allow remote electrical tripping of the circuit breaker. They can be used to monitor control or main circuits in order to implement a protective system against accidental restart following a power failure, for example. Auxiliary releases therefore perform a main circuit monitoring function in addition to the main circuit monitoring performed by the trip unit.
  • Page 165 Accessories 4.2 Internal accessories Shunt Trip Left (STL) Shunt trips of type STL can be fitted in the left-hand accessory compartment as an alternative to an undervoltage release. The units are available with six rated voltages in the following range: ●...
  • Page 166 Accessories 4.2 Internal accessories Technical specifications of shunt trips and releases 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 167 Accessories 4.2 Internal accessories 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 168: Time-delay Devices For Undervoltage Releases

    Accessories 4.2 Internal accessories 4.2.6 Time-delay devices for undervoltage releases Undervoltage releases can also be equipped with external, electronic time-delay control devices which prevent unintentional tripping in response to brief voltage dips during periods of disrupted operation. Time-delay device for UVR with fixed delay setting The simple time-delay device with fixed delay setting is available for the following voltages: ●...
  • Page 169: 24 V Module

    Accessories 4.2 Internal accessories 4.2.8 24 V module With the aid of the 24 volt module, the ETU electronic trip unit of the 3VA6 molded case circuit breakers can be permanently activated. The module is installed in the right-hand accessory compartment and has 4 slots. The following advantages arise from the use of the 24 V module: ●...
  • Page 170: Connection System

    Accessories 4.3 Connection system Connection system 4.3.1 Introduction The chapter "Connection technology" contains useful information and provides an overview of the 3VA UL connection technology. It provides a helpful guide to connecting cables or busbars to a molded case circuit breaker and so helps to ensure the safety of personnel and material assets.
  • Page 171 Accessories 4.3 Connection system Cable classes according to UL 486 and IEC 60228: UL 486 IEC 60228 ① Cable with solid wire in core Solid Class 1 ② Cable with stranded wires in core Class B Class 2 ③ Cable with stranded wires in core Class C Class 5 ④...
  • Page 172 Accessories 4.3 Connection system Solid and stranded sector-shaped conductors are also used. Compression lugs For stable and reliable connecting of cables to molded case circuit breakers, compression lugs are also used. These elements help to make solid connections at the breaker. Insulation is first stripped from the end of the cable (by amount of length L) before the compression lug is attached to the cable.
  • Page 173 Accessories 4.3 Connection system Cables and busbars: Busbars In addition to cables, the busbar is also widely used in electrical connections, especially in panels. Some of the reasons for using busbars include: ● High-curvature bending radii which are unsuitable for cables of large cross section ●...
  • Page 174: Connection Portfolio For 3va Ul Molded Case Circuit Breakers

    Accessories 4.3 Connection system 4.3.3 Connection portfolio for 3VA UL molded case circuit breakers 4.3.3.1 General overview The connection technology of the 3VA UL molded case circuit breakers provides a straightforward and convenient way to commission the molded case circuit breakers in compliance with all installation requirements.
  • Page 175 Accessories 4.3 Connection system The connection technology accessories (see chapter Further connection accessories (Page 203)) also provide the option of insulating the termination area of the 3VA UL molded case circuit breaker and protecting it from accidental contact. A control wire tap can be implemented quickly using accessory components which are available separately.
  • Page 176 Accessories 4.3 Connection system Copper terminal available Only available for 3VA63 and 3VA64 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 177 Accessories 4.3 Connection system Note Wire connectors are generally made of aluminum. For special wire connectors, there are copper versions. Exact cross-section and torque information for these can be found in chapter Front cable connection (Page 176). For designs and applications for 100% rated line protection, copper wire connectors without control wire tap must be used.
  • Page 178: Front Cable Connection

    Accessories 4.3 Connection system 4.3.3.2 Front cable connection The diagram below illustrates all the components available for implementing a direct cable connection at the molded case circuit breaker. The only exception is the box terminal as this can be used to connect busbars as well as cables. Connection technology Cables and busbars ①...
  • Page 179 Accessories 4.3 Connection system Box terminal The tables below show all the types and sizes of cable and flexible busbar that can be connected to a box terminal. 3VA5 molded case circuit breakers: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 180 Accessories 4.3 Connection system 3VA6 molded case circuit breakers: Maximum current carrying capacity 380 A Box terminals can be ordered ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 181 Accessories 4.3 Connection system Wire connector with and without control wire tap The wire connector is available under separate article numbers depending on whether it is ordered with or without a control wire tap. With the exception of the hole for the control wire tap, both wire connectors are technically identical, i.e.
  • Page 182 Accessories 4.3 Connection system 3VA5 molded case circuit breakers: Aluminum version: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 183 Accessories 4.3 Connection system Copper version: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 184 Accessories 4.3 Connection system 3VA6 molded case circuit breakers: Aluminum version: Maximum current carrying capacity 400 A 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 185 Accessories 4.3 Connection system Copper version: Wire connector with and without control wire tap can be ordered: ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 186 Accessories 4.3 Connection system Wire connector, large, with and without control wire tap The wire connector, large, is available under separate article numbers depending on whether it is ordered with or without a control wire tap. With the exception of the hole for the control wire tap, both wire connectors are technically identical, i.e.
  • Page 187 Accessories 4.3 Connection system Wire connector, large with or without control wire tap can be ordered: ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 188 Accessories 4.3 Connection system Wire connector, 2 cables, with and without control wire tap The wire connector, 2 cables, is available under separate article numbers depending on whether it is ordered with or without a control wire tap. With the exception of the hole for the control wire tap, both wire connectors are technically identical, i.e.
  • Page 189 Accessories 4.3 Connection system Aluminum version: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 190 Accessories 4.3 Connection system Copper version: Wire connector, 2 cables with or without control wire tap can be ordered ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 191 Accessories 4.3 Connection system Distribution wire connector, 6 cables The distribution wire connector, 6 cables, is an external terminal that projects beyond the molded case circuit breaker contour of the termination area. It can hold up to 6 cables. One of the six holes in the terminal can be used to implement a control wire tap.
  • Page 192 Accessories 4.3 Connection system 3VA6 molded case circuit breakers: The distribution wire connector, 6 cables, can be ordered: ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 193: Front Busbar And Compression Lug Connections

    Accessories 4.3 Connection system 4.3.3.3 Front busbar and compression lug connections The diagram below illustrates all the components available for implementing a busbar or compression lug connection on the front panel of the 3VA UL molded case circuit breaker. Connection technology Cables and busbars ①...
  • Page 194 Accessories 4.3 Connection system Nut keeper kit With the nut keeper kit, it is possible to connect busbars and compression lugs directly to the terminal of the 3VA UL molded case circuit breaker. An auxiliary connection can be implemented using a special control wire tap. You can find more detailed information about this in chapter Control wire tap (Page 219).
  • Page 195 Accessories 4.3 Connection system Nut keeper kits can be ordered: ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 196 Accessories 4.3 Connection system Front bus connectors extended The front bus connectors extended enable larger busbars and compression lugs to be connected outside the termination area of a 3VA UL molded case circuit breaker. The front bus connectors therefore extend the terminal of the breaker. You can find information on the required insulation measures in chapter Insulating equipment (Page 203).
  • Page 197 Accessories 4.3 Connection system The front bus connectors extended can be ordered: ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 198 Accessories 4.3 Connection system Front bus connectors offset (only available for 3VA63 and 3VA64) The front bus connectors offset enable very large busbars and compression lugs to be connected outside the termination area of a 3VA UL molded case circuit breaker. The front bus connector offset increases the distance between pole centers (3VA63 and 3VA64 with offset = 70 mm / 2.76 inch) of the terminals of the molded case circuit breaker.
  • Page 199 Accessories 4.3 Connection system Front bus connectors offset can be ordered: ● as a pack of 3 ● as a pack of 4 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 200: Rear Busbar And Compression Lug Connections

    Accessories 4.3 Connection system 4.3.3.4 Rear busbar and compression lug connections The diagram below illustrates all the components available for implementing a busbar or compression lug connection on the rear panel of the 3VA UL molded case circuit breaker. Connection technology Cables and busbars ①...
  • Page 201 Accessories 4.3 Connection system Width across flats of the supplied lock nut Plug-in and draw-out technology only possible in combination with bus connector offset and associated terminal cover 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 202 Accessories 4.3 Connection system Rear connection studs round can be ordered ● as a pack of 3 (2 short studs and 1 long stud) ● as a pack of 4 (2 short studs and 2 long studs) ● as a pack of 1 (1 short stud) ●...
  • Page 203 Accessories 4.3 Connection system Plug-in and draw-out technology only possible in combination with bus connector offset and associated terminal cover 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 204 Accessories 4.3 Connection system Rear connection studs flat can be ordered: ● as a pack of 3 (2 short connection studs flat and 1 long connection stud flat) ● as a pack of 4 (2 short connection studs flat and 2 long connection studs flat) ●...
  • Page 205: Further Connection Accessories

    Accessories 4.3 Connection system 4.3.4 Further connection accessories 4.3.4.1 Insulating equipment The connection technology accessories provide a comprehensive range of insulation measures. The following overview shows the insulation accessories available for the 3VA UL molded case circuit breakers. ① Terminal cover ②...
  • Page 206 Accessories 4.3 Connection system Phase barriers Phase barriers provide insulation between the individual phases of the molded case circuit breaker. They are simply snapped into place on the 3VA UL molded case circuit breaker. Phase barriers can be used in combination with the insulating plate and the insulating plate offset.
  • Page 207 Accessories 4.3 Connection system Terminal cover, extended terminal cover, and offset terminal cover Note The offset terminal cover is only available for the 3VA63 and 3VA64 molded case circuit breakers. All terminal covers provide IP40 protection at the front of the breaker and IP20 protection at the infeed and load ends provided that they are correctly installed (cutting of grille structure).
  • Page 208 Accessories 4.3 Connection system Terminal cover The terminal cover is compatible with: ● Box terminals ● Wire connectors ● Nut keeper kits The terminal cover is simply snapped into place on the 3VA UL molded case circuit breaker (3VA5 125 A) or snapped into place and secured with 2 screws (3VA5 250 A and 3VA6). Terminal cover extended ①...
  • Page 209 Accessories 4.3 Connection system Terminal cover offset The terminal cover offset always consists of two parts: ① Rear insulating plate, provides insulation from the panel mounting plate ② Front half, pushed over the molded case circuit breaker from the front The insulating plate is fitted to the rear panel of the molded case circuit breaker and then secured by 2 screws to the front half of the terminal cover.
  • Page 210 Accessories 4.3 Connection system General insulating measures 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 211 Accessories 4.3 Connection system Insulating measures - UL The insulation accessories for UL applications are presented by identification letters in the following tables. Note All the presented insulation measures represent minimum requirements. Covers can be replaced with more substantial covers: •...
  • Page 212 Accessories 4.3 Connection system Insulating measures for 3VA51 molded case circuit breakers for UL use Not applicable for 3VA51..-.ED1. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 213 Accessories 4.3 Connection system Insulating measures for 3VA52 molded case circuit breakers for UL use 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 214 Accessories 4.3 Connection system Insulating measures for 3VA61/62/63/64 molded case circuit breakers for UL use For 3VA63/64 only 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 215 Accessories 4.3 Connection system The insulating measures for IEC applications are presented in the following. The insulating measures are identified with letters in the tables. These letters stand for the following insulation accessories: Note All the presented insulation measures represent minimum requirements. Covers can be replaced with higher-quality covers: •...
  • Page 216 Accessories 4.3 Connection system Insulating measures for 3VA51 molded case circuit breakers for IEC use Not applicable for 3VA51..-.ED1. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 217 Accessories 4.3 Connection system Insulating measures for 3VA52 molded case circuit breakers for IEC use 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 218 Accessories 4.3 Connection system Insulating measures for 3VA61 and 3VA62 molded case circuit breakers for IEC use 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 219 Accessories 4.3 Connection system Insulating measures for 3VA63 and 3VA64 molded case circuit breakers for IEC use 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 220 Accessories 4.3 Connection system Touch protection Insulated cables and busbars With insulated cables and busbars whose insulation extends inside the termination area of the 3VA molded case circuit breaker, finger safety according to IP2X degree of protection is achieved in IEC applications with the terminal cover. The requirements of NFPA 79 "Protection against electric shock"...
  • Page 221: Control Wire Tap

    Accessories 4.3 Connection system 4.3.4.2 Control wire tap The portfolio of the 3VA UL molded case circuit breaker enables easy implementation of a control wire tap. Note A maximum current limit of 15 A applies to all control wire taps for 3VA UL molded case circuit breakers.
  • Page 222 Accessories 4.3 Connection system All wire connectors can be ordered with control wire tap under a separate article number. The wire connector is then supplied with a hole for the control wire tap. A ring terminal can be applied using this hole and, in some cases, a spade plug-in connector. The required screw is supplied.
  • Page 223: Plug-in And Draw-out Technology

    Accessories 4.4 Plug-in and draw-out technology Plug-in and draw-out technology 4.4.1 Introduction In most applications, 3VA UL molded case circuit breakers are fixed-mounted in switchboards or distribution panels. The breaker is normally secured by mounting screws directly to the mounting plate or other suitable supports inside the panel. The cables or busbars of the main circuits are connected directly to the 3VA UL molded case circuit breaker with various terminals or connectors.
  • Page 224 Accessories 4.4 Plug-in and draw-out technology Draw-out technology As with plug-in technology, with draw-out technology, the 3VA UL molded case circuit breaker is equipped with plug-in contacts for the main circuits. In addition, side walls including guide and retaining studs are screwed onto the side of the molded case circuit breakers.
  • Page 225 Accessories 4.4 Plug-in and draw-out technology Plug-in and draw-out technology for 3VA UL The following describes the interplay of plug-in and draw-out technology and 3VA UL molded case circuit breakers. However, the 3VA UL molded case switch (MCS) and motor circuit protector (MCP) types can also be implemented with plug-in or draw-out technology.
  • Page 226: Overview Of Variants / Products

    Accessories 4.4 Plug-in and draw-out technology 4.4.2 Overview of variants / products Installation overview 3-pole and 4-pole 3VA UL molded case circuit breaker versions are available for fixed mounting as well as for plug-in or draw-out technology according to the following table: Besides the complete kit for plug-in or draw-out technology, a "conversion kit"...
  • Page 227: General Information

    Accessories 4.4 Plug-in and draw-out technology 4.4.3 General information With plug-in and draw-out circuit breakers, the cables or busbars are connected to the plug-in socket or the draw-out socket. The same socket unit is used for the same sizes of both variants.
  • Page 228: Information About Installation, Built-on And Built-in Components

    Accessories 4.4 Plug-in and draw-out technology 4.4.4 Information about installation, built-on and built-in components Securing plug-in and draw-out units to the mounting plate Bolts supplied with complete kit Supplied with each complete kit for plug-in or draw-out technology: ● 4 fastening bolts, metric thread, Phillips pan head The fastening bolts are used to attach the relevant socket unit to a mounting plate or supports.
  • Page 229: Plug-in Technology

    Accessories 4.4 Plug-in and draw-out technology 4.4.5 Plug-in technology 4.4.5.1 Product description Applications The plug-in units for the 3VA UL molded case circuit breakers are designed for complex applications in which fast replacement of the molded case circuit breaker is needed. Plug-in technology can be used, for example, when clear visual evidence of safe electrical isolation of circuits is essential, e.g.
  • Page 230 Accessories 4.4 Plug-in and draw-out technology A complete kit for plug-in technology contains all the components for conversion of a fixed-mounted molded case circuit breaker type to a plug-in technology type. A complete kit for plug-in technology contains: ● Plug-in socket ●...
  • Page 231 Accessories 4.4 Plug-in and draw-out technology Scope of delivery of the 3VA UL molded case circuit breaker, 3VA UL molded case switch (MCS) and motor circuit protector (MCP): 2 assembly bolts • For 3-pole version up to 250 A: 4 assembly bolts •...
  • Page 232 Accessories 4.4 Plug-in and draw-out technology Terminal covers As described above, two screw-mounted terminal covers are included in the plug-in socket complete kit and the plug-in socket conversion kit. These feature molded grips to ease withdrawal of the molded case circuit breaker from its socket. Since more force is needed to remove a molded case circuit breaker from its socket, the plug-in technology terminal covers are screwed to the molded case circuit breaker.
  • Page 233 Accessories 4.4 Plug-in and draw-out technology Auxiliary circuit connectors Molded case circuit breakers are frequently equipped with internal accessories, e.g. auxiliary switches, auxiliary releases, etc. A broad range of components is also available for the 3VA UL molded case circuit breaker. For further information, please refer to chapter Internal accessories (Page 152).
  • Page 234 Accessories 4.4 Plug-in and draw-out technology Position signaling in the plug-in socket Several position signaling switches (number depends on socket size) can be fitted in the plug-in socket. Auxiliary switches are capable of signaling "Plug-in unit - MCCB correctly bolted to plug-in socket" via electrical connections. For further information, please refer to chapter Position signaling switches (Page 244).
  • Page 235: Combination With Other Accessories

    Accessories 4.4 Plug-in and draw-out technology Benefits of plug-in technology ● Defective molded case circuit breakers can be replaced quickly and easily ● Clear visual evidence of safe electrical isolation of main circuits with removal of the circuit breaker ● Remote signaling of molded case circuit breaker positions: –...
  • Page 236: Draw-out Technology

    Accessories 4.4 Plug-in and draw-out technology 4.4.6 Draw-out technology 4.4.6.1 Product description Typical applications for draw-out units for the 3VA UL molded case circuit breaker range are installations in which inspections need to be carried out at regular intervals and a visible electrical isolation is required by removal of the circuit breaker, which must be implemented quickly.
  • Page 237 Accessories 4.4 Plug-in and draw-out technology Defined positions ● CONNECT position: The molded case circuit breaker is connected to the main circuits. The auxiliary circuits are also electrically connected to the installation via the auxiliary circuit connectors. This is the normal operating position of the molded case circuit breaker. ●...
  • Page 238 Accessories 4.4 Plug-in and draw-out technology Remove the molded case circuit breaker NOTICE Irreparable damage to the racking mechanism when rotated in wrong direction The following operations will lead to irreparable damage of the draw-out socket gear: • Molded case circuit breaker is in DISCONNECT position: Insertion of the crank handle (position indicator changes to UNBLOCK) and counterclockwise turning of the crank handle toward DISCONNECT.
  • Page 239 Accessories 4.4 Plug-in and draw-out technology Components of a conversion kit for draw-out technology ● Plug-in contacts for attachment to the main terminals of the molded case circuit breaker – 3-pole: 6 plug-in contacts – 4-pole: 8 plug-in contacts ● Side walls with guide bolts for mounting on the molded case circuit breaker ●...
  • Page 240 Accessories 4.4 Plug-in and draw-out technology Installation instructions The draw-out socket is permanently mounted in the panel by means of the mounting screws included in the complete kit for draw-out technology. The molded case circuit breaker / molded case switch comes with two assembly screws (3-pole version) or four assembly screws (4-pole version).
  • Page 241 Accessories 4.4 Plug-in and draw-out technology The plunger performs various safety functions in operation: ● It prevents closure of the main contacts of the molded case circuit breaker when the breaker is inserted in the draw-out socket and in an undefined position (breaker status indication is UNBLOCK).
  • Page 242 Accessories 4.4 Plug-in and draw-out technology Position signaling in the draw-out socket Several position signaling switches can be inserted in the right side wall of the draw-out socket. These auxiliary switches are capable of signaling breaker positions DISCON, TEST and CONNECT. The auxiliary switches also output a position indication signal if the molded case circuit breaker in the draw-out socket is not in one of the positions specified above.
  • Page 243 Accessories 4.4 Plug-in and draw-out technology Attaching padlocks 1. Move the molded case circuit breaker into the CONNECT, TEST or DISCON position. The breaker must be in one of these positions before the plastic frame can be pulled out. 2. Pull out the plastic frame. The crank handle opening is sealed off.
  • Page 244 Accessories 4.4 Plug-in and draw-out technology Integration of molded case circuit breaker position signal into a communication network By means of the COM100 and COM800 breaker data servers, various statuses of multiple molded case circuit breakers can be queried and passed on by bus systems. This includes messages such as "Breaker tripped", "Breaker on", "Breaker off", reason for tripping, etc.
  • Page 245: Combination With Other Accessories

    Accessories 4.4 Plug-in and draw-out technology walls and the cutout. Optimum results are achieved here by additionally attaching a cover frame (Page 378). An opening in the panel through which the crank handle can be inserted must be provided in addition to the cutout for the door feedthrough.
  • Page 246: Accessories For Plug-in And Draw-out Units

    Accessories 4.4 Plug-in and draw-out technology 4.4.7 Accessories for plug-in and draw-out units 4.4.7.1 Description of individual product variants Position signaling switches These auxiliary switches are capable of signaling a variety of states via electrical connections. The position signaling switch is available in only one version. Applications: ●...
  • Page 247 Accessories 4.4 Plug-in and draw-out technology Signal "Position of molded case circuit breaker in the draw-out unit" So that the position of the molded case circuit breaker within the draw-out socket can be passed on electrically to the monitoring and control systems, up to six position signaling switches can be inserted in the right side wall of the draw-out unit at the following positions: ①...
  • Page 248 Accessories 4.4 Plug-in and draw-out technology Depending on the position of the molded case circuit breaker in the draw-out unit, the outputs of the position signaling switches assume one of the following states: Signal "Draw-out unit locked / open" ① Slot for position signaling switch for signal "Draw-out unit locked / open"...
  • Page 249 Accessories 4.4 Plug-in and draw-out technology Signal "Draw-out unit locked / open" A position signaling switch to transmit this signal is installed in position 44 of the right-hand side wall of the draw-out unit. A position signaling switch in position 44 outputs a signal which indicates whether the padlock locking unit is in the OUT position, thereby locking the draw-out unit.
  • Page 250 Accessories 4.4 Plug-in and draw-out technology Signal "Plug-in unit - MCCB correctly bolted to plug-in socket" This option is provided for plug-in units only. Depending on the socket size, up to two position signaling switches can be installed in slot No. 46. ①...
  • Page 251 Accessories 4.4 Plug-in and draw-out technology Communications interface for draw-out unit The cable set for the communication link for the draw-out unit consists of a preassembled cable with a mini USB port at one end and three special position signaling switches at the other.
  • Page 252 For detailed instructions on how to install the communication link for the draw-out unit, please refer to the relevant Operating Instructions (https://support.industry.siemens.com/cs/ww/en/view/109741015). For instructions on how to read out data via remote data transfer, refer to the operating instructions for the COM100/COM800 breaker data server.
  • Page 253 Accessories 4.4 Plug-in and draw-out technology ① Socket-end auxiliary circuit connector ② Breaker-end auxiliary circuit connector ③ Cable cage Cable cages are used to attach the breaker-end half of the auxiliary circuit connector to the underside of the molded case circuit breaker. Slot numbers are also printed on the cable cages.
  • Page 254 Accessories 4.4 Plug-in and draw-out technology ① Positioning tongue (breaker end) ② Positioning hook (socket end) ③ Latching element (socket end) The socket-end half of the auxiliary circuit connectors is simply snapped into the socket. Various cable routing openings and ducts are provided in the socket and the molded case circuit breaker.
  • Page 255 Accessories 4.4 Plug-in and draw-out technology Door feedthrough Door feedthroughs must be installed for applications which require ● direct operation of a molded case circuit breaker even when the panel door is closed, ● the draw-out version of a molded case circuit breaker to be electrically isolated from or connected to the installation while the panel door is closed, ●...
  • Page 256 Accessories 4.4 Plug-in and draw-out technology Terminal cover for a molded case circuit breaker converted to plug-in or draw-out technology ① Terminal cover with molded grips, can be screwed to contact unit ② Terminal cover for covering the terminal area ①...
  • Page 257 Accessories 4.4 Plug-in and draw-out technology Cable cage Cable cages are used to attach the breaker-end half of auxiliary circuit connectors to the molded case circuit breaker. They are also designed to act as cable ducts for installing wires from internal accessories to the auxiliary circuit connector. For further information about cable cages, please refer to chapter Auxiliary circuit connector (Page 250).
  • Page 258: Overview Of Technical Specifications

    Accessories 4.4 Plug-in and draw-out technology 4.4.7.2 Overview of technical specifications Technical specifications of the accessories for internal components of molded case circuit breakers in plug-in and draw-out technology: This meets NFPA 79 "Protection against electric shock" requirements This meets NFPA 79 "Protection against electric shock" requirements 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 259: Combination With Other Accessories

    Accessories 4.4 Plug-in and draw-out technology 4.4.7.3 Combination with other accessories ● The communication link for the draw-out unit and the switches for signaling the position of the molded case circuit breaker in the draw-out unit are mutually compatible. For further information, please refer to the following chapters: Position signaling switches (Page 244) Communications interface for draw-out unit (Page 249)
  • Page 260: Manual Operators

    Accessories 4.5 Manual operators Manual operators 4.5.1 Introduction The manual operators for the 3VA UL molded case circuit breaker are described in this chapter. Overview of manual operators The following manual operators are available for the 3VA UL molded case circuit breaker: ●...
  • Page 261: Operator Control Of The 3va Ul Molded Case Circuit Breakers With Manual Operators

    Accessories 4.5 Manual operators 4.5.2 Operator control of the 3VA UL molded case circuit breakers with manual operators Opening and closing ● To close the 3VA UL molded case circuit breaker: Turn the manual operator to the ON (I) position. Front mounted rotary operator, door mounted rotary operator, side wall mounted rotary operator: Handle of the operator kit with Bowden cable:...
  • Page 262 Accessories 4.5 Manual operators ● To open the 3VA UL molded case circuit breaker: Turn the manual operator to the OFF (O) position. Front mounted rotary operator, door mounted rotary operator, side wall mounted rotary operator: Handle of the operator kit with Bowden cable: 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 263 Accessories 4.5 Manual operators Resetting the manual operator after the molded case circuit breaker has tripped When the molded case circuit breaker trips, the manual operator moves automatically from the ON (I) to the TRIP position. Front mounted rotary operator, door mounted rotary operator, side wall mounted rotary operator: Handle of the operator kit with Bowden cable: 3VA molded case circuit breakers with UL and IEC certification...
  • Page 264 Accessories 4.5 Manual operators The molded case circuit breaker remains in the tripped state until the manual operator is reset: 1. Clear the fault which has caused the molded case circuit breaker to trip. 2. Turn the manual operator counter-clockwise to the RESET position (just beyond OFF (O)).
  • Page 265 Accessories 4.5 Manual operators 3. Turn the manual operator to the ON (I) position. Front mounted rotary operator, door mounted rotary operator, side wall mounted rotary operator: Handle of the operator kit with Bowden cable: The molded case circuit breaker is closed again. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 266: Front Mounted Rotary Operator

    Accessories 4.5 Manual operators 4.5.3 Front mounted rotary operator 4.5.3.1 Elements of the front mounted rotary operator The front mounted rotary operator is available in two versions: ● With door interlock ● Without door interlock ① ⑥ Front mounted rotary operator with door Indication of the breaker status (on, off, trip) interlock (see below)
  • Page 267: Front Mounted Rotary Operator With Door Interlock

    Accessories 4.5 Manual operators Indication of the breaker status on front mounted rotary operator ① ④ ON: Breaker closed OFF: Breaker open ② ⑤ TRIP: Breaker tripped RESET: Reset following a trip ③ Mounting position 4.5.3.2 Front mounted rotary operator with door interlock The front mounted rotary operator with door interlock projects through the panel door.
  • Page 268 Accessories 4.5 Manual operators Procedure 1. Turn the front mounted rotary operator to position OFF (0) in order to open the molded case circuit breaker. 2. Press the button of the door open function 3. Actuate the NC contact of the panel door and open the panel door. Overriding the door interlock The door interlock can be overridden by a deliberate action.
  • Page 269: Testing The Tripping Mechanism

    Accessories 4.5 Manual operators 4.5.3.3 Testing the tripping mechanism Testing the tripping mechanism The button <PUSH TO TRIP> can be pressed to perform a function test on the tripping mechanism. Procedure 1. Turn the front mounted rotary operator to position ON (I) in order to close the molded case circuit breaker.
  • Page 270: Locking, Blocking And Interlocking

    Accessories 4.5 Manual operators 4.5.3.4 Locking, blocking and interlocking The following accessories for locking, blocking and interlocking are used: ● Locking at the handle ● Locking, blocking and interlocking at the rotary operator Locking at the handle The rotary operator can be locked at the handle with up to three padlocks with a diameter of 3/16"...
  • Page 271 Accessories 4.5 Manual operators Locking, blocking and interlocking at the rotary operator Locking at the rotary operator is possible with up to three padlocks with a diameter of 3/16" - 5/16" / 5 - 8 mm and with a cylinder lock (type Ronis). Interlocking is only possible with a cylinder lock (type Ronis).
  • Page 272 Accessories 4.5 Manual operators Locking, blocking or interlocking with cylinder lock (type Ronis) The cylinder lock (type Ronis) is used, depending on the installation of the cylinder lock holder, for locking, blocking and interlocking the rotary operators. ● Locking with cylinder lock (type Ronis): The cylinder lock (type Ronis) locks the rotary operators in the OFF (O) position.
  • Page 273: Door Mounted Rotary Operator

    Accessories 4.5 Manual operators 4.5.4 Door mounted rotary operator 4.5.4.1 Elements of the door mounted rotary operator With the door mounted rotary operator installed, it is possible to operate the molded case circuit breaker through the panel door without opening the door. ①...
  • Page 274: Door Interlock With Door Mounted Rotary Operator

    Accessories 4.5 Manual operators 4.5.4.2 Door interlock with door mounted rotary operator Door interlock with door mounted rotary operator In the case of door mounted rotary operators with door interlock, the door is interlocked as soon as the switch is in ON (I) position. In the case of door mounted rotary operators with door open function, the door is interlocked starting from the closing of the door (OFF (0)).
  • Page 275 The panel door can then also be opened at any time without additional measures if the circuit breaker is switched on (position ON). This applies to all door mounted rotary operators with article numbers 3VA9…-0FK2… For details, see operating instructions (https://support.industry.siemens.com/cs/ww/en/view/109741016). 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 276: Tolerance Compensator

    Accessories 4.5 Manual operators 4.5.4.3 Tolerance compensator Tolerance compensator Door mounted rotary operators are supplied as standard with a tolerance compensator. This tolerance compensator compensates for a possible small misalignment between the handle in the panel door and the shaft of the door mounted rotary operator. ①...
  • Page 277: Testing The Tripping Mechanism

    Accessories 4.5 Manual operators 4.5.4.4 Testing the tripping mechanism Testing the tripping mechanism The <PUSH TO TRIP> button can be used to check whether the tripping mechanism is working properly. Procedure 1. Turn the door mounted rotary operator to the OFF (O) position. 2.
  • Page 278: Supplementary Handle For Door Mounted Rotary Operator

    Accessories 4.5 Manual operators 4.5.4.5 Supplementary handle for door mounted rotary operator Supplementary handle for door mounted rotary operator The supplementary handle can be used to operate the molded case circuit breaker when the panel door is open. The supplementary handle is mandatory for applications requiring NFPA 79-compliant door mounted rotary operators.
  • Page 279: Variable Depth Adapter

    Accessories 4.5 Manual operators 4.5.4.6 Variable depth adapter Variable depth adapter The variable depth adapter enables adjustment of the travel distance CONNECT, TEST and DISCONNECT when using draw-out technology. As a result, the panel door does not have to be opened to move the switch to the CONNECT, TEST and DISCONNECT positions. See also chapter Draw-out technology (Page 234).
  • Page 280: Locking, Blocking And Interlocking

    Accessories 4.5 Manual operators 4.5.4.7 Locking, blocking and interlocking The following accessories for locking, blocking and interlocking are used: ● Locking at the handle ● Locking at the masking plate of the panel door ● Locking, blocking and interlocking at the rotary operator Locking at the handle The rotary operator can be locked at the handle with up to three padlocks with a diameter of 3/16"...
  • Page 281 Accessories 4.5 Manual operators Locking at the masking plate of the panel door with cylinder lock (Kaba) The door mounted rotary operator can be locked at the panel door with a cylinder lock (type Kaba). The cylinder lock can not be used for locking in the ON (I) position. Note The cylinder lock (type Kaba) for the masking plate must be ordered separately.
  • Page 282 Accessories 4.5 Manual operators Example of rotary operator with shaft stub: Lockable positions: ● Position OFF (O) Locking, blocking or interlocking with cylinder lock (type Ronis) The cylinder lock (type Ronis) is used, depending on the installation of the cylinder lock holder, for locking, blocking and interlocking the rotary operators.
  • Page 283: Side Wall Mounted Rotary Operator

    Accessories 4.5 Manual operators 4.5.5 Side wall mounted rotary operator 4.5.5.1 Elements of the side wall mounted rotary operator The side wall mounted rotary operator allows the molded case circuit breaker to be operated through the right-hand or left-hand side wall of the panel. ①...
  • Page 284: Side Wall Mounted Rotary Operator With Mounting Plate

    Accessories 4.5 Manual operators 4.5.5.2 Side wall mounted rotary operator with mounting plate Side wall mounted rotary operator with mounting plate The side wall mounted rotary operator is available in a version with mounting plate for molded case circuit breakers up to 250 A. The mounting plate can be installed on the right- hand or left-hand side panel.
  • Page 285: Locking, Blocking And Interlocking

    Accessories 4.5 Manual operators 4.5.5.3 Locking, blocking and interlocking The following accessories for locking, blocking and interlocking are used: ● Locking at the handle ● Locking at the masking plate of the side wall ● Locking, blocking and interlocking at the rotary operator Locking at the handle The rotary operator can be locked at the handle with up to three padlocks with a diameter of 3/16"...
  • Page 286 Accessories 4.5 Manual operators Locking at the masking plate of the side wall with cylinder lock (Kaba) The side wall mounted rotary operator can be locked at the side wall with a cylinder lock (type Kaba). The cylinder lock can not be used for locking in the ON (I) position. Note The cylinder lock (type Kaba) for the masking plate must be ordered separately.
  • Page 287 Accessories 4.5 Manual operators Example of rotary operator with shaft stub: Lockable positions: ● Position OFF (O) Locking, blocking or interlocking with cylinder lock (type Ronis) The cylinder lock (type Ronis) is used, depending on the installation of the cylinder lock holder, for locking, blocking and interlocking the rotary operators.
  • Page 288: Operator Kit With Bowden Cable (max-flex Operator)

    Accessories 4.5 Manual operators 4.5.6 Operator kit with Bowden cable (Max-Flex operator) 4.5.6.1 Elements of the operator kit with Bowden cable The Max-Flex operator is installed for switching a 3VA UL molded case circuit breaker using a handle and Bowden cable through the panel door. The switching mechanism and handle are connected to one another with a flexible Bowden cable.
  • Page 289: Door Interlocking With The Operator Kit With Bowden Cable

    Accessories 4.5 Manual operators 4.5.6.2 Door interlocking with the operator kit with Bowden cable The handle of the operator kit with Bowden cable interlocks the panel door as soon as the handle is in position ON (I). Defeat function of the door interlock In order to open the panel door even when the molded case circuit breaker is closed, the door interlock can be defeated.
  • Page 290 Accessories 4.5 Manual operators Switching on the molded case circuit breaker when panel door is open When the panel door is open, the 3VA UL molded case circuit breaker can be switched using the Max-Flex operator with a deliberate action only. Procedure 1.
  • Page 291: Testing The Tripping Mechanism

    Accessories 4.5 Manual operators 4.5.6.3 Testing the tripping mechanism The <PUSH TO TRIP> button can be used to check whether the tripping mechanism is working properly. Procedure 1. Turn the Max-Flex handle to the OFF (O) position. 2. Open the panel door. 3.
  • Page 292: Locking, Blocking And Interlocking

    Accessories 4.5 Manual operators 4.5.6.5 Locking, blocking and interlocking Lockable positions: ● Position OFF (O) Locking the handle of the operator kit with Bowden cable in the OFF (O) position prevents the molded case circuit breaker from being closed. ● Position ON (I) The handle of the operator kit with Bowden cable can not be locked in the ON position.
  • Page 293: Degree Of Protection

    Accessories 4.5 Manual operators 4.5.7 Degree of protection 4.5.7.1 IP degree of protection When fitted with a cover frame (see illustration below), a front mounted rotary operator installed in the panel door has degree of protection IP30. Note To ensure that the panel door can still be opened, the front mounted rotary operator must not project over the cover frame by more than 5 mm when the door is closed.
  • Page 294: Accessories

    Accessories 4.5 Manual operators 4.5.8 Accessories 4.5.8.1 Illumination kit Illumination kit The illumination kit illuminates the indication of the breaker status of the front mounted rotary operator or the door mounted rotary operator or the masking plate of the door mounted or side wall mounted rotary operator.
  • Page 295: Motor Operator

    Accessories 4.6 Motor operator Motor operator 4.6.1 Elements of the motor operator MO320 The motor operator MO320 transmits commands via electrical control cables to open and close the molded case circuit breaker. The source of commands transmitted via electrical control cables can be a pushbutton or a PLC, for example. Motor operators must also used in conjunction with automatic transfer control devices.
  • Page 296: Description Of Front Panel

    Accessories 4.6 Motor operator 4.6.2 Description of front panel The front panel of the motor operator MO320 features an indication of the breaker status and an LED labeled "TRIP". The indication directly reflects the status of the actuating shaft. With its clear breaker status indication, the motor operator MO320 meets the requirements pertaining to isolating features stipulated by IEC / EN 60947-1.
  • Page 297: Manual, Auto And Lock Modes

    Accessories 4.6 Motor operator 4.6.3 MANUAL, AUTO and LOCK modes The motor operator MO320 is switched to MANUAL or AUTO mode when the plastic window is opened (MANUAL) or closed (AUTO). MANUAL: When the plastic window is open, the motor operator MO320 is in MANUAL mode. The motor operator is moved to position ON (I) or OFF (O) by manual operation of the handle.
  • Page 298: Operating The Molded Case Circuit Breaker With Motor Operator

    Accessories 4.6 Motor operator The padlock device can be locked with up to three padlocks with a diameter of 3/16" - 5/16" / 5 - 8 mm. Padlocks are not included in the scope of supply. 4.6.4 Operating the molded case circuit breaker with motor operator Opening and closing in MANUAL mode The plastic window is open, the motor operator is in MANUAL mode.
  • Page 299 Accessories 4.6 Motor operator Opening and closing in AUTO mode The plastic window is closed, the motor operator is in AUTO mode. The 3VA UL molded case circuit breaker can be closed or opened with electrical signals. ● Close the 3VA UL molded case circuit breaker with an electrical ON signal at the terminal block: The molded case circuit breaker is closed - ON (I).
  • Page 300 Accessories 4.6 Motor operator Resetting the molded case circuit breaker If the 3VA UL molded case circuit breaker is tripped, the "TRIP" LED lights up ① Reset mode setting The resetting of the 3VA UL molded case circuit breaker by the motor operator depends on the selected reset mode.
  • Page 301 Accessories 4.6 Motor operator Connection diagram for control of the motor operator MO320 Note An EMERGENCY OFF circuit may be implemented by means of a shunt trip or UVR (Page 162). For further circuit diagrams, see chapter "Circuit diagrams" (Page 385). The motor operator MO320 is edge-controlled, i.e.
  • Page 302: Faults, Causes Of Faults And Rectification Of Faults

    Accessories 4.6 Motor operator 4.6.5 Faults, causes of faults and rectification of faults 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 303: Technical Specifications

    Accessories 4.6 Motor operator 4.6.6 Technical specifications Motor operator MO320 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 304: Locking And Interlocking

    Accessories 4.7 Locking and interlocking Locking and interlocking 4.7.1 General information 4.7.1.1 General information For all 3VA UL molded case circuit breakers, a basic distinction is made between: ● Locking of molded case circuit breakers ● Interlocking of molded case circuit breakers 4.7.1.2 Locking The padlock devices can be used to lock the 3VA UL molded case circuit breaker in the...
  • Page 305: Interlocking

    Accessories 4.7 Locking and interlocking Locking a molded case circuit breaker in the ON (I) position Like the OFF (O) position, the ON (I) positions can also be secured with a padlock device in order to secure the 3VA UL molded case circuit breaker against being opened. Only an authorized person can remove the locking of the 3VA UL molded case circuit breaker in the ON position again.
  • Page 306 Accessories 4.7 Locking and interlocking Principle of two interlocked 3VA UL molded case circuit breakers: ① Molded case circuit breaker blocked/locked in the safe switching state OFF (O) ② Molded case circuit breaker released for operation The 3VA UL molded case circuit breakers provide the following interlocking options: ●...
  • Page 307: Blocking And Locking

    Note You can find information on installation in the operating instructions "Handle blocking device" (https://support.industry.siemens.com/cs/ww/en/view/109742929). With the help of the handle blocking device, the 3VA UL molded case circuit breaker can be locked in the OFF (O) position with up to three padlocks (shackle diameter 3/16" - 5/16" / 4.5 - 8.5 mm).
  • Page 308 Accessories 4.7 Locking and interlocking If the 3VA UL molded case circuit breaker also needs to be lockable in the ON (I) position, ① the metal pin on the sliding bar must be removed with pliers, see diagram below. This deliberate action is a safety precaution and prevents accidental locking of the breaker in the ON position.
  • Page 309: Cylinder Locks For Locking The 3va Molded Case Circuit Breaker

    Accessories 4.7 Locking and interlocking 4.7.2.2 Cylinder locks for locking the 3VA molded case circuit breaker The OFF (O) or ON (I) position of the 3VA UL molded case circuit breaker can also be locked with a cylinder lock (type Ronis). After the locking, the 3VA UL molded case circuit breaker is protected from further actuation.
  • Page 310 Accessories 4.7 Locking and interlocking ● One adapter kit The adapter kit transfers the motion of the lock to the switching mechanism. The article number includes the adapter kit and two cylinder lock housings. One cylinder lock housing (locking) is used for locking applications and the other housing (interlocking) for interlocking applications.
  • Page 311 Accessories 4.7 Locking and interlocking Locking in the OFF (O) position In order to lock the 3VA UL molded case circuit breaker in the OFF (O) position, the cylinder lock (type Ronis) is installed with the adapter kit and the cylinder lock housing for locking in the right-hand accessory compartment of the molded case circuit breaker.
  • Page 312 Accessories 4.7 Locking and interlocking To lock the 3VA UL molded case circuit breaker in the OFF (O) position, the key must be turned to the vertical "locked" position. Locking in the ON (I) position For safety reasons, a deliberate action is required to lock the breaker in the ON (I) position. The slide for locking in the ON position must be used for this purpose.
  • Page 313: Front Interlocking

    Accessories 4.7 Locking and interlocking 4.7.3 Front interlocking Front interlocks are installed on the front panel of the 3VA UL molded case circuit breaker. The following interlocking methods are available for the 3VA UL molded case circuit breaker: ● Cylinder locks for implementing interlocks between an unlimited number of molded case circuit breakers ●...
  • Page 314 Accessories 4.7 Locking and interlocking ● One adapter kit The adapter kit transfers the motion of the lock to the switching mechanism. The article number includes the adapter kit and two cylinder lock housings. ① Slide for locking in the OFF position ②...
  • Page 315 Accessories 4.7 Locking and interlocking Installing the cylinder lock in the accessory compartment The cylinder lock (type Ronis) is installed with the adapter kit and the "Interlocking" cylinder lock housing in the right-hand accessory compartment of the molded case circuit breaker. ①...
  • Page 316 Accessories 4.7 Locking and interlocking Interlocking of molded case circuit breakers WARNING Risk of interlock defeat. Use of more than one key poses safety hazard. Leave a key inserted in only one of the circuit breakers in the interlock arrangement. Store all other keys in a safe place or lock them away.
  • Page 317 Accessories 4.7 Locking and interlocking 3. Insert one single key in one circuit breaker included in the interlock; store or lock away all other keys. 4. Use the single key to turn the cylinder lock of the 3VA UL molded case circuit breaker to be released to the "unlocked"...
  • Page 318: Cable Interlock Module Using A Bowden Cable

    Accessories 4.7 Locking and interlocking Installation of other accessories The installation of the cylinder lock in the accessory compartment of the molded case circuit breaker partly excludes the installation of other accessory components, e.g. front mounted accessories such as manual and motor operators as well as front interlocks. Likewise the cylinder lock blocks slots for internal accessories (for overview see chapter Mounting locations of 3VA UL molded case circuit breakers (Page 152)).
  • Page 319 Accessories 4.7 Locking and interlocking A Bowden cable must be installed in addition to the sliding bar modules. This cable prevents the slides from releasing more than one molded case circuit breaker at any one time. This ensures that only one 3VA UL molded case circuit breaker at a time can be actuated and only one molded case circuit breaker can be in the ON (I) position.
  • Page 320 Accessories 4.7 Locking and interlocking Interlock combinations The following 3VA UL molded case circuit breakers can be interlocked: Possible combinations of handle positions When a sliding bar using a Bowden cable is installed for two 3VA UL molded case circuit breakers, the following handle positions are possible: When a sliding bar using a Bowden cable is installed for three 3VA UL molded case circuit breakers, the following handle positions are possible:...
  • Page 321: Sliding Bar

    Accessories 4.7 Locking and interlocking 4.7.3.3 Sliding bar With the front sliding bar, up to three 3VA UL molded case circuit breakers of the same size can be mutually interlocked with a bar device. The sliding bar can be locked with up to three padlocks (shackle diameter 1/4"...
  • Page 322 Accessories 4.7 Locking and interlocking Example of an interlock based on two 3VA UL molded case circuit breakers: Scope of delivery The order number includes the following items: ● 2 side plates ● 1 locking slide Interlock combinations The following interlock combinations can be implemented with the sliding bar: ●...
  • Page 323: Rear Interlock

    Accessories 4.7 Locking and interlocking Possible combinations of handle positions In the case of a sliding bar for two 3VA UL molded case circuit breakers locked with padlocks, the following handle positions are possible: In the case of a sliding bar for three 3VA UL molded case circuit breakers locked with padlocks, the following handle positions are possible: Installation of other accessories The installation of the front sliding bar partly excludes the installation of other accessory...
  • Page 324 ⑥ Mounting accessories Interlocking rod Note You can find installation information in the operating instructions of the rear interlock (https://support.industry.siemens.com/cs/ww/en/view/109742930). Scope of delivery The order number includes the following items: ● Two interlocking modules ● Mounting accessories ● Interlocking rod...
  • Page 325 Accessories 4.7 Locking and interlocking Interlock combinations The following interlock combinations are possible: ● All 3VA5 and 3VA6 molded case circuit breakers can be interlocked. ● All sizes up to 600 A can be interlocked. ● All 3-pole and 4-pole molded case circuit breakers can be interlocked. Handle positions When a rear interlock is installed for two 3VA UL molded case circuit breakers, the following handle positions are possible:...
  • Page 326 Accessories 4.7 Locking and interlocking Assembling aid to facilitate installation of rear interlock An assembling aid is available for all 3VA UL molded case circuit breakers. It facilitates installation of the rear interlock and reduces the amount of work required to the panel mounting plate.
  • Page 327 Accessories 4.7 Locking and interlocking 1. Assemble installation frame: ① – Place mounting plates on the molded case circuit breaker. ② – Bolt the profile rails to the adapter plates. – Install rear interlock. 2. Bolt the assembled installation frame to the panel mounting plate. No further work to the panel mounting plate is required.
  • Page 328 Accessories 4.7 Locking and interlocking The rear interlock for plug-in or draw-out units is available as a complete kit containing all the required components: ● Two interlocking modules ● Mounting accessories ● Interlocking rod ● All the required tappet extensions Interlock combinations The same rear interlock combinations can be implemented for plug-in and draw-out versions as for fixed-mounted versions.
  • Page 329: Communication And System Integration

    You can find detailed information on the communication module and breaker data server and the communication link of the molded case circuit breaker in the 3VA Communication System Manual (https://support.industry.siemens.com/cs/ww/en/view/98746267). 4.8.2 Communication system of the 3VA UL molded case circuit breaker...
  • Page 330 Accessories 4.8 Communication and system integration The diagram below presents the components which render a 3VA UL molded case circuit breaker capable of communication. System architecture of 3VA UL communication The central components of communication-capable 3VA UL molded case circuit breakers are the ETUs 5-series and 8-series.
  • Page 331: Com800 / Com100 Breaker Data Server

    The 3VA UL molded case circuit breakers can also be connected to the commissioning and service software powerconfig. The 3VA UL molded case circuit breakers can also be connected to many non-Siemens systems via these communication networks. Furthermore, local visualization on the DSP800 display can be implemented with the COM800/COM100 breaker data server.
  • Page 332 Accessories 4.8 Communication and system integration To establish a communication link, the COM800 or COM100 breaker data server is connected via the 3VA-line to the COM060 communication module of the relevant circuit breaker. ① 7KM PAC expansion modules ② T-connector From a UL Class 2, 24 V DC power supply, the COM800/COM100 breaker data server supplies power to all the 3VA UL molded case circuit breakers involved and the following components:...
  • Page 333: Area Of Application

    Accessories 4.8 Communication and system integration 4.8.3.1 Area of application The COM800/COM100 breaker data server enables the integration of the 3VA UL molded case circuit breakers in: ● Power monitoring software powermanager ● Industrial automation systems ● Building automation systems ●...
  • Page 334: Area Of Application

    Accessories 4.8 Communication and system integration 4.8.4.1 Area of application Communication-capable ETUs are deployed for any application which requires the following functions: ● Diverse protection functions ● Fine adjustment of protection functions ● Metering functions ● For 50 Hz and 60 Hz systems (45 ... 65 Hz) ●...
  • Page 335: Commissioning And Testing Of Electronic Trip Units Using Powerconfig

    Accessories 4.8 Communication and system integration 4.8.6 Commissioning and testing of electronic trip units using powerconfig powerconfig powerconfig has the following functions in relation to 3VA UL molded case circuit breakers: ● Parameterization of 3VA UL ETUs and other 3VA UL components ●...
  • Page 336 Accessories 4.8 Communication and system integration The 3VA UL molded case circuit breakers and, if applicable, other devices supported by powerconfig, are combined in powerconfig to form a project if they have a technical, organizational or other connection. Electronic trip units (ETU), the EFB300 external function box and the communication structure can be commissioned easily by means of the powerconfig software.
  • Page 337 Accessories 4.8 Communication and system integration powerconfig supports a variety of different device communication links depending on the SENTRON device used: ● USB ● Ethernet (Modbus TCP) ● PROFINET ● PROFIBUS ● MODBUS RTU The possible means of connection of the COM800 / COM100 breaker data server are described in detail in the 3VA Communication system manual (see Reference documents (Page 11)).
  • Page 338 Accessories 4.8 Communication and system integration With 3VA6 molded case circuit breakers and ETUs 3-series, powerconfig is linked to the ETU interface via the USB interface on the PC and the interface on the TD500 test device. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 339: Power Management With Powermanager

    4.8.7 Power management with powermanager For power and plant monitoring, Siemens offers the powermanager software. Together with SENTRON protection devices such as 3VA UL, 3WL, 3VL and PAC measuring devices as well as non-Siemens devices, powermanager provides a power monitoring system for reducing energy costs and increasing energy availability.
  • Page 340: Efb300 External Function Box

    Accessories 4.9 EFB300 external function box EFB300 external function box 4.9.1 General information The 3VA UL molded case circuit breakers with the electronic trip systems ETUs 3-series, 5-series and 8-series can be functionally expanded with the EFB300 external function box. The EFB300 external function box receives information from the ETU via a cable connection.
  • Page 341: Power Supply

    Accessories 4.9 EFB300 external function box 4.9.2 Power supply The EFB300 external function box requires a UL Class 2, 24 V DC power supply and acts as a power supply for the connected ETU. This allows the ETU to remain operational even after a 3VA UL molded case circuit breaker has tripped.
  • Page 342: Zone-selective Interlocking Zsi

    Accessories 4.9 EFB300 external function box Overview of functions available with EFB300 external function box 4.9.4 Zone-selective interlocking ZSI Description The microprocessor-controlled, zone-selective interlocking function ZSI has been developed in order to control the total breaking time in low-voltage networks with multiple molded case circuit breakers connected in series.
  • Page 343 Accessories 4.9 EFB300 external function box Advantage of ZSI: Regardless of the number of series-connected molded case circuit breakers, all short circuits in the network greater than I but less than I will have a delay of no more than 50 ms. Short- circuit clearance times should be minimized, particularly in the case of system short circuits of very large magnitude.
  • Page 344: Set> Button

    Accessories 4.9 EFB300 external function box 4.9.5 <SET> button The <SET> button performs the following functions depending on mode: ● Operating mode: Acknowledgment of signals ● Test mode: Execution of a test function Operating mode The EFB300 external function box is in operating mode during operation. Operation of the EFB300 is indicated by steady illumination of the LED labeled "ACT".
  • Page 345 Accessories 4.9 EFB300 external function box LED states in operating mode Steady illumination Flashing Simultaneous flashing of all LEDs indicates that the EFB300 is defective. Flashing 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 346 Accessories 4.9 EFB300 external function box Test mode All inputs and outputs can be activated or deactivated manually in test mode. This can be done to determine whether the digital outputs and the ZSI bus are functioning properly and wired correctly. The LED labeled "ACT"...
  • Page 347 Accessories 4.9 EFB300 external function box 2. Press the <SET> button briefly. LED "ZSI_OUT" flashes, the ZSI output is selected. 3. In order to activate the selected output, press the <SET> button for longer than 2 seconds. The LED of the selected output changes from flashing to steady illumination to indicate activation of the selected output.
  • Page 348 Accessories 4.9 EFB300 external function box 4. In order to deactivate the output again, press the <SET> button again for longer than 2 seconds. The LED of the activated output will change from steady illumination to flashing. The output is deactivated, but still selected. ①...
  • Page 349 Accessories 4.9 EFB300 external function box Terminating test mode If the <SET> button is not pressed for a period of three minutes after selection of an output, test mode is terminated automatically and the EFB300 reverts to operating mode. Alternative method: After working through the entire menu structure (only the LED labeled "ACT"...
  • Page 350 Accessories 4.9 EFB300 external function box LED states in test mode Steady illumination Flashing 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 351: Technical Specifications

    Accessories 4.9 EFB300 external function box 4.9.6 Technical specifications 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 352 Accessories 4.9 EFB300 external function box 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 353: Mmb300 Maintenance Mode Box

    Accessories 4.10 MMB300 maintenance mode box 4.10 MMB300 maintenance mode box 4.10.1 Operating principle of the MMB300 maintenance mode box The 3VA6 molded case circuit breakers with the electronic trip system ETUs 3-series, 5-series and 8-series can be functionally expanded with an MMB300 maintenance mode box.
  • Page 354 Accessories 4.10 MMB300 maintenance mode box LED states of the MMB300 maintenance mode box Steady illumination Flashing Simultaneous flashing of all LEDs indicates that the MMB300 is defective. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 355: Configuration Of Mmb300 With A 3va6 Molded Case Circuit Breaker

    Accessories 4.10 MMB300 maintenance mode box 4.10.2 Configuration of MMB300 with a 3VA6 molded case circuit breaker The possible configuration of the MMB300 maintenance mode box with the associated molded case circuit breaker is shown in the following. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 356 Accessories 4.10 MMB300 maintenance mode box Alternatively, up to eight 3VA6 molded case circuit breakers can be connected in series with an MMB300 maintenance mode box. This ensures that the external status display only signals that maintenance mode is activated when all series-connected molded case circuit breakers are in DAS mode.
  • Page 357 Accessories 4.10 MMB300 maintenance mode box LED states for the 3VA6 molded case circuit breaker and MMB300 maintenance mode box in different applications The LED states shown in the following tables relate to the circuit diagram of the multiple series-connected 3VA6 molded case circuit breakers (see above). Steady illumination Flashing 3VA molded case circuit breakers with UL and IEC certification...
  • Page 358 Accessories 4.10 MMB300 maintenance mode box Steady illumination Flashing If the external status display is "On", this guarantees that all 3VA6 molded case circuit breakers are in maintenance mode. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 359: Set> Button

    Accessories 4.10 MMB300 maintenance mode box 4.10.3 <SET> button The SET button on the MMB300 maintenance mode box functions exactly like on the EFB300 external function box. The SET button can be used to activate test mode of the MMB300 maintenance mode box. This means that the "MAINT Out"...
  • Page 360: Power Supply

    Accessories 4.10 MMB300 maintenance mode box 4.10.4 Power supply The MMB300 maintenance mode box requires a UL Class 2, 24 V DC power supply and also serves as the power supply for the connected ETUs. This allows the ETU to remain operational even after the 3VA6 molded case circuit breaker has tripped or is in the Off position.
  • Page 361 Accessories 4.10 MMB300 maintenance mode box 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 362: Test Devices

    Accessories 4.11 Test devices 4.11 Test devices 4.11.1 Introduction Test devices are required in order to perform local tests of the 3VA6 molded case circuit breakers with electronic trip units (ETUs). Two versions of the test devices are available: ● TD300 activation and trip box ●...
  • Page 363: The Td300 Activation And Trip Box

    Accessories 4.11 Test devices 4.11.2 The TD300 activation and trip box The TD300 activation and trip box is a mobile, battery-operated local test device. Its purpose ● To supply the ETU with power so that the ETU can be parameterized when the molded case circuit breaker is switched off and de-energized.
  • Page 364: Operation And Execution Of The Tripping Function

    Accessories 4.11 Test devices 4.11.2.1 Operation and execution of the tripping function CAUTION Personal injury, unintentional tripping and irreparable damage to the TD300 Use of the TD300 when the molded case circuit breaker is not de-energized can result in personal injury, unintentional tripping of the circuit breaker and irreparable damage to the TD300.
  • Page 365 Accessories 4.11 Test devices LED states when the TD300 and the molded case circuit breaker are switched on Test the molded case circuit breaker (mechanical trip test) 1. Connect the TD300 to the molded case circuit breaker in the correct sequence and switch 2.
  • Page 366: Technical Specifications Of Td300

    Accessories 4.11 Test devices 4.11.2.2 Technical specifications of TD300 4.11.3 The TD500 test device 4.11.3.1 General information, preparations The TD500 mobile test device can be used to test the different causes of ETU trips. This enables testing of the functioning and wiring of all connected system components before the 3VA6 molded case circuit breaker is commissioned.
  • Page 367 Accessories 4.11 Test devices Benefits of the TD500 test device ● With a TD500 test device, all 3VA6 molded case circuit breakers can be configured one after the other directly at the installation via powerconfig ● The device can store up to 100 test results. ●...
  • Page 368 Accessories 4.11 Test devices ① ⑨ Connecting cable for ETU Pushbutton for transformer test ② ⑩ LED "LOG" (available memory status) Pushbutton for instantaneous ③ short-circuit trip test I LED "RESULT" ⑪ ④ Pushbutton for short-time delayed Pushbutton for neutral trip test N short-circuit test S ⑤...
  • Page 369 Accessories 4.11 Test devices LED display Interfaces of the TD500 test device The diagram below shows the physical interfaces of the TD500 test device. ① Top of unit: Connection to 3VA UL molded case circuit breaker ② Bottom of unit on right: 24 V DC supply ③...
  • Page 370 Accessories 4.11 Test devices Data stored in the TD500 The following data are stored in the TD500: ● Article number ● ETU parameter settings ● Causes of ETU trips Note Readout of data and clearing of the internal memory of the TD500 Using a PC and the powerconfig software, you can read these data out of the TD500 and clear its internal memory.
  • Page 371: Operation And Execution Of Test Functions

    Accessories 4.11 Test devices 4.11.3.2 Operation and execution of test functions Connecting and disconnecting the TD500 CAUTION Personal injury, malfunctions and false test results Failure to connect the TD500 test device to the molded case circuit breaker according to the sequence of steps specified below can result in personal injury, malfunctions and false test results.
  • Page 372 Accessories 4.11 Test devices Disconnect the TD500 from the 3VA6 molded case circuit breaker 1. Switch off the 3VA6 molded case circuit breaker. 2. Press the pushbutton labeled <ETU Power ON/OFF> on the TD500 test device. The LED labeled "COM" on the TD500 goes out. The ETU is now no longer powered via the TD500 and is deactivated.
  • Page 373 Accessories 4.11 Test devices Example: Testing the tripping function L on an ETU550 LSI 1. Connect the TD500 test device to the 3VA6 molded case circuit breaker. 2. Switch on the 3VA6 molded case circuit breaker. 3. Press pushbutton <L> on the TD500 test device. The LED in the pushbutton <L>...
  • Page 374 Accessories 4.11 Test devices Carry out a meter test The purpose of the meter test is to determine whether the ETU is measuring and displaying current correctly. A test current of 0.4 x I is fed into the ETU. The current value measured rated by the ETU is then checked to confirm that it matches the test current.
  • Page 375 Accessories 4.11 Test devices Execute the test 1. Disconnect all external power supplies to the electronics. 2. Connect the TD500 test device to the 3VA6 molded case circuit breaker. 3. Switch on the 3VA6 molded case circuit breaker. ① 4. Press the pushbutton labeled <TRANS> The LED in the <TRANS>...
  • Page 376: Executing The Test Functions Using A Pc And Powerconfig

    Accessories 4.11 Test devices 4.11.3.3 Executing the test functions using a PC and powerconfig In addition to its capabilities as a stand-alone test device, the TD500 can also act as a PC interface to the ETU. If the TD500 test device is connected both to the ETU and a PC, the protective functions can be triggered from a PC on which the powerconfig software is installed.
  • Page 377: Technical Specifications

    Accessories 4.11 Test devices 4.11.3.5 Technical specifications 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 378: External Current Transformer For N Conductor

    Accessories 4.12 External current transformer for N conductor 4.12 External current transformer for N conductor The external current transformer for N conductor is a current transformer for 3-pole 3VA6 molded case circuit breakers with ETUs 5-series and 8-series. It is used when 3-pole circuit breakers are to be used in 4-wire systems but monitoring of the N conductor is still desired.
  • Page 379 Accessories 4.12 External current transformer for N conductor Technical specifications 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 380: Cover Frame

    Accessories 4.13 Cover frame 4.13 Cover frame Molded case circuit breakers or supplementary motor operators or front mounted rotary operators for molded case circuit breakers are often installed in panels or distribution boards in such a way that only the operating device is directly accessible. Busbars, cables and the termination area of the molded case circuit breaker are covered by metal or plastic plates in order to prevent direct contact with live components.
  • Page 381 Accessories 4.13 Cover frame Installation 1. Cut out an opening in the cover plate. Refer to the operating instructions for the correct cutout dimensions. 2. Insert the cover frame into the cutout from the front and fasten by means of small spring steel sheets at the rear of the cover plate.
  • Page 382: Labeling Plate

    Accessories 4.13 Cover frame 4.13.2 Labeling plate A supplementary labeling plate (3VA9077-0SX10) is available for the cover frames. It can be latched in position in the center of any of the four sides of the cover frame. Paper or plastic labels displaying plant-specific information are attached by adhesive to the labeling plate.
  • Page 383: Service And Maintenance

    Service and maintenance Notes Qualified personnel It is essential to refer to this documentation when setting up and operating the relevant equipment / system. The equipment / system may only be serviced and maintained by qualified personnel. For the purpose of the safety information in these operating instructions, a "qualified person"...
  • Page 384: Regular Maintenance

    Service and maintenance 5.2 Regular maintenance Regular maintenance Recommended maintenance/inspection intervals Following initial commissioning, the equipment/system must be inspected at least once per year. In addition, an inspection should be carried out after 1000 cycles at rated operational current. If the molded case circuit breaker or molded case switch (MCS) is operated in a dusty environment or an environment with corrosive vapors, gases or salt spray, it is recommended that the inspection intervals be adjusted, e.g.
  • Page 385: Maintenance Following Tripping Of A Molded Case Circuit Breaker

    Service and maintenance 5.3 Maintenance following tripping of a molded case circuit breaker Maintenance following tripping of a molded case circuit breaker If a 3VA UL molded case circuit breaker trips because of an overcurrent (overload, short circuit) or fault current (ground fault), the cause of the trip must be identified and eliminated before the molded case circuit breaker may be switched on again.
  • Page 386: Fault Diagnostics

    Service and maintenance 5.4 Fault diagnostics Fault diagnostics See also Technical Support (Page 10) 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 387: Technical Specifications

    Technical specifications Circuit diagrams 6.1.1 3VA5 molded case circuit breakers 6.1.1.1 Basic units Molded case switch / motor circuit protector ① Fixed mounting ② Plug-in/draw-out technology 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 388 Technical specifications 6.1 Circuit diagrams 3VA5 molded case circuit breakers with thermal-magnetic trip unit Fixed mounted, 3-pole 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 389: Accessories

    Technical specifications 6.1 Circuit diagrams 6.1.1.2 Accessories Auxiliary switches, alarm switches and position signaling contacts ① Changeover contacts for auxiliary switches AUX, trip alarm switches TAS and electrical alarm switches EAS, position signaling switches for plug-in and draw-out units ② Leading changeover contacts for leading changeover switch LCS Auxiliary releases ①...
  • Page 390 Technical specifications 6.1 Circuit diagrams Motor operators Front mounted motor operator Motor operator actuation controlled via control cable OFF (to be provided by customer) ON (to be provided by customer) Fuse in the control circuit (to be provided by customer) Indicator light AUTO mode (to be provided by customer) Indicator light MAN mode (to be provided by customer) 3VA molded case circuit breakers with UL and IEC certification...
  • Page 391 Technical specifications 6.1 Circuit diagrams Motor operator actuation controlled via control cable and undervoltage release OFF (to be provided by customer) ON (to be provided by customer) Remote command (to be provided by customer) Auxiliary contactor (to be provided by customer) U<...
  • Page 392: Example: 3va5 Molded Case Circuit Breakers With Accessories (external/internal)

    Technical specifications 6.1 Circuit diagrams 6.1.1.3 Example: 3VA5 molded case circuit breakers with accessories (external/internal) 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 393: 3va6 Molded Case Circuit Breakers

    Technical specifications 6.1 Circuit diagrams 6.1.2 3VA6 molded case circuit breakers 6.1.2.1 Basic units Fixed-mounted and plug-in/draw-out units, 3-pole and 4-pole ① ② Fixed-mounted, 3-pole and 4-pole Plug-in/draw-out units, 3-pole and 4-pole Voltage tap Fixed-mounted, 3-pole 3VA6 molded case circuit breaker in 5-wire system ①...
  • Page 394: Accessories

    Technical specifications 6.1 Circuit diagrams 6.1.2.2 Accessories Auxiliary switches, alarm switches and position signaling contacts ① Changeover contacts for auxiliary switches AUX, trip alarm switches TAS and electrical alarm switches EAS, position signaling switches for plug-in and draw-out units ② Leading changeover contacts for leading changeover switch LCS Auxiliary releases ①...
  • Page 395 Technical specifications 6.1 Circuit diagrams Other internal accessories ① COM060 communication module ② 24 V module Motor operators Front mounted motor operator 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 396 Technical specifications 6.1 Circuit diagrams Motor operator actuation controlled via control cable OFF (to be provided by customer) ON (to be provided by customer) Fuse in the control circuit (to be provided by customer) Indicator light AUTO mode (to be provided by customer) Indicator light MAN mode (to be provided by customer) 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 397 Technical specifications 6.1 Circuit diagrams Motor operator actuation controlled via control cable and undervoltage release OFF (to be provided by customer) ON (to be provided by customer) Remote command (to be provided by customer) Auxiliary contactor (to be provided by customer) U<...
  • Page 398 Technical specifications 6.1 Circuit diagrams Plug-in and draw-out technology Plug-in and draw-out technology ① Plug-in units, 3-pole and 4-pole, with two optionally integrated position signaling switches for signaling "Plug-in unit - MCCB correctly bolted to plug-in socket". ② Draw-out units, 3-pole and 4-pole, with an optional switch for signaling the condition "Draw-out unit locked / open" and six optionally integrated position signaling switches for signaling "Position of breaker in the draw-out unit".
  • Page 399 Technical specifications 6.1 Circuit diagrams Draw-out units with communication interface Voltage tap Draw-out units, 3-pole and 4-pole, with an optional switch for signaling the condition "Draw-out unit locked / open" and three optionally integrated position signaling switches for signaling "Position of breaker in the draw-out unit". 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 400 Technical specifications 6.1 Circuit diagrams Other external accessories T-connector A connection can also be optionally equipped with a bus terminating resistor. The T-Connector is included in the scope of supply of the COM060 communication module. COM800 / COM100 breaker data server A connection can also be optionally equipped with a bus terminating resistor.
  • Page 401 Technical specifications 6.1 Circuit diagrams COM800 / COM100 breaker data server with expansion modules ① COM800 / COM100 breaker data server with 7KM PAC PROFIBUS DP expansion module ② COM800 / COM100 breaker data server with 7KM PAC Switched Ethernet PROFINET expansion module A connection can also be optionally equipped with a bus terminating resistor.
  • Page 402 Technical specifications 6.1 Circuit diagrams MMB300 maintenance mode box 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 403 Technical specifications 6.1 Circuit diagrams External current transformer for N conductor and illumination kit (24 V DC) for manual handle ① Connection for external current transformer for N conductor ② Illumination kit (24 V DC) for manual handle Voltage tap Time-delay device for undervoltage releases ①...
  • Page 404: Example: 3va6 Molded Case Circuit Breakers With Accessories (external/internal)

    Technical specifications 6.1 Circuit diagrams 6.1.2.3 Example: 3VA6 molded case circuit breakers with accessories (external/internal) A connection can also be optionally equipped with a bus terminating resistor. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 405: Application Example: Electrical Interlocking Of Two 3va Ul Molded Case Circuit Breakers With Undervoltage Releases

    Technical specifications 6.1 Circuit diagrams 6.1.3 Application example: Electrical interlocking of two 3VA UL molded case circuit breakers with undervoltage releases Molded case circuit breaker 1 UVR 1 Undervoltage release in molded case circuit breaker 1 AUX 1 Auxiliary switch in molded case circuit breaker 1 Molded case circuit breaker 2 UVR 2 Undervoltage release in molded case circuit breaker 2...
  • Page 406: Dimensional Drawings

    Technical specifications 6.2 Dimensional drawings Dimensional drawings 6.2.1 Dimensions of basic units 6.2.1.1 3VA51 3VA51 125 A 1-pole 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 407 Technical specifications 6.2 Dimensional drawings 3VA51 125 A 3-pole 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 408: 3va52

    Technical specifications 6.2 Dimensional drawings 6.2.1.2 3VA52 3VA52 250 A 3-pole 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 409: 3va61 / 3va62

    Technical specifications 6.2 Dimensional drawings 6.2.1.3 3VA61 / 3VA62 3VA61 150 A / 3VA62 250 A, 3- and 4-pole 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 410: 3va63 / 3va64

    Technical specifications 6.2 Dimensional drawings 6.2.1.4 3VA63 / 3VA64 3VA63 400 A / 3VA64 600 A, 3- and 4-pole 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 411: Dimensions Of Accessories

    Technical specifications 6.2 Dimensional drawings 6.2.2 Dimensions of accessories 6.2.2.1 Connection technology Rear busbar and compression lug connections for plug-in and draw-out molded case circuit breakers Rear connection stud flat 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 412 Technical specifications 6.2 Dimensional drawings Rear connection stud round 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 413 Technical specifications 6.2 Dimensional drawings Phase barrier 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 414 Technical specifications 6.2 Dimensional drawings Terminal cover Extended terminal cover 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 415 Technical specifications 6.2 Dimensional drawings Terminal cover offset 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 416 Technical specifications 6.2 Dimensional drawings Insulating plate Insulating plate 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 417 Technical specifications 6.2 Dimensional drawings Broadened insulating plate 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 418: Plug-in And Draw-out Units

    Technical specifications 6.2 Dimensional drawings 6.2.2.2 Plug-in and draw-out units Plug-in socket 3VA6 150 / 250 A and 400 A 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 419 Technical specifications 6.2 Dimensional drawings 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 420 Technical specifications 6.2 Dimensional drawings 3VA6 600 A 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 421 Technical specifications 6.2 Dimensional drawings 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 422 Technical specifications 6.2 Dimensional drawings Draw-out unit 3VA6 150 / 250 A and 400 A 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 423 Technical specifications 6.2 Dimensional drawings 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 424 Technical specifications 6.2 Dimensional drawings 3VA6 600 A 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 425 Technical specifications 6.2 Dimensional drawings 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 426 Technical specifications 6.2 Dimensional drawings Door feedthrough 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 427: Manual Operators

    Technical specifications 6.2 Dimensional drawings 6.2.2.3 Manual operators Front mounted rotary operator 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 428 Technical specifications 6.2 Dimensional drawings Door mounted rotary operator Door mounted rotary operator 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 429 Technical specifications 6.2 Dimensional drawings Variable depth adapter 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 430 Technical specifications 6.2 Dimensional drawings Door mounted rotary operator with variable depth adapter (3VA9487 - 0GB10) 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 431 Technical specifications 6.2 Dimensional drawings 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 432 Technical specifications 6.2 Dimensional drawings Supplementary handle for door mounted rotary operator 3VA9.87 - 0GC... 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 433 Technical specifications 6.2 Dimensional drawings 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 434 Technical specifications 6.2 Dimensional drawings 3VA9.87 - 0GA80 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 435 Technical specifications 6.2 Dimensional drawings 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 436 Technical specifications 6.2 Dimensional drawings Articulated shaft operator 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 437 Technical specifications 6.2 Dimensional drawings Side wall mounted rotary operator Side wall mounted rotary operator 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 438 Technical specifications 6.2 Dimensional drawings Side wall mounted rotary operator with mounting plate 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 439 Technical specifications 6.2 Dimensional drawings Operator kit with Bowden cable (Max-Flex operator) Handle Switching mechanism for 3VA5 125 A 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 440 Technical specifications 6.2 Dimensional drawings Switching mechanism for 3VA5 250 A and 3VA6 150 / 250 A Switching mechanism for 3VA6 400 / 600 A 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 441: Motor Operators

    Technical specifications 6.2 Dimensional drawings 6.2.2.4 Motor operators MO320 motor operator 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 442: Locking And Interlocking

    Technical specifications 6.2 Dimensional drawings 6.2.2.5 Locking and interlocking Handle blocking device 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 443 Technical specifications 6.2 Dimensional drawings Locking, blocking or interlocking with cylinder lock 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 444 Technical specifications 6.2 Dimensional drawings Module for sliding bar with Bowden cable Sliding bar 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 445 Technical specifications 6.2 Dimensional drawings Rear interlock Mounting on rear wall of panel, fixed-mounted 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 446 Technical specifications 6.2 Dimensional drawings Mounting on rear wall of panel, plug-in technology 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 447 Technical specifications 6.2 Dimensional drawings Mounting on rear wall of panel, draw-out technology 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 448 Technical specifications 6.2 Dimensional drawings Mounting with mounting plate and profile rail 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 449: Communication And System Integration

    Technical specifications 6.2 Dimensional drawings 6.2.2.6 Communication and system integration COM800 and COM100 breaker data server DSP800 display 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 450: Efb300 External Function Box

    Technical specifications 6.2 Dimensional drawings 6.2.2.7 EFB300 external function box 6.2.2.8 MMB300 maintenance mode box 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 451: Test Devices

    Technical specifications 6.2 Dimensional drawings 6.2.2.9 Test devices TD300 activation and trip box Refer to chapter Technical specifications of TD300 (Page 364). TD500 test device Refer to chapter Technical specifications (Page 375). 6.2.2.10 Door cover frame 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 452: Power Losses

    Technical specifications 6.3 Power losses Power losses 6.3.1 Power losses of 3VA5 molded case circuit breakers Note For 3-pole devices, the specified power loss applies in the case of 3-phase symmetrical loading. 3VA5 molded case circuit breakers for line protection 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 453 Technical specifications 6.3 Power losses 3VA5 molded case circuit breakers for starter protection 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 454: Power Losses Of 3va6 Molded Case Circuit Breakers

    Technical specifications 6.3 Power losses 6.3.2 Power losses of 3VA6 molded case circuit breakers Note The specified power loss applies to 3-pole and 4-pole devices in the case of 3-phase, symmetrical loading. If the 4th pole is not de-energized (e.g. DC applications; unbalanced loading, many 1-pole loads), the 4th pole has one-third the power loss of the 3-pole power loss.
  • Page 455: Power Loses Of 3va Ul Molded Case Switches

    Technical specifications 6.3 Power losses 3VA6 molded case circuit breakers for starter protection 6.3.3 Power loses of 3VA UL molded case switches Note For 3-pole devices, the specified power loss applies in the case of 3-phase symmetrical loading. 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 456: Derating

    Technical specifications 6.4 Derating Derating 6.4.1 Derating of 3VA5 molded case circuit breakers The temperature inside the molded case circuit breaker is influenced by the ambient temperature and the current-dependent power loss generated inside the unit. To prevent overloading of 3VA5 molded case circuit breakers under difficult thermal conditions, the maximum rated continuous operational current must be limited as a function of the ambient temperature.
  • Page 457 Technical specifications 6.4 Derating 3VA5 molded case circuit breakers for line protection No derating up to the rated operational current I of the molded case circuit breaker 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 458: Use Of Terminals With Control Wire Tap

    Technical specifications 6.4 Derating 3VA5 molded case circuit breakers for starter protection MCP No derating up to the rated operational current I of the molded case circuit breaker 3VA UL molded case switches No derating up to the rated operational current I of the molded case circuit breaker 6.4.2 Use of terminals with control wire tap...
  • Page 459: Additional Correction Factors With Frequencies Other Than 50/60 Hz For 3va5 Molded Case Circuit Breakers

    Technical specifications 6.4 Derating 6.4.3 Additional correction factors with frequencies other than 50/60 Hz for 3VA5 molded case circuit breakers The temperature rise in the bimetal is greater at frequencies above 50/60 Hz. This is due to eddy-current losses and the reduction in the available conductor cross section as a result of the skin effect.
  • Page 460: Derating For The Electronic Trip Units Of 3va6 Molded Case Circuit Breakers

    Technical specifications 6.4 Derating Example Starting point: A 3VA5 200 A molded case circuit breaker with a TM230 trip unit is used in a 400 Hz application. The molded case circuit breaker is to trip instantaneously at an overcurrent of 2000 A. The maximum permissible rated continuous operational current is calculated first: 200 A ·...
  • Page 461 Technical specifications 6.4 Derating 3VA6 molded case circuit breakers for line protection Fixed-mounted: COM060 COM060 communication module No derating up to the rated operational current I of the molded case circuit breaker 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 462 Technical specifications 6.4 Derating Plug-in and draw-out technology: COM060 COM060 communication module No derating up to the rated operational current I of the molded case circuit breaker 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 463 Technical specifications 6.4 Derating 3VA6 molded case circuit breakers for starter protection Fixed-mounted: COM060 COM060 communication module No derating up to the rated operational current I of the molded case circuit breaker 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 464 Technical specifications 6.4 Derating Plug-in and draw-out technology: COM060 COM060 communication module No derating up to the rated operational current I of the molded case circuit breaker 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 465 Technical specifications 6.4 Derating 3VA6 molded case switches COM060 COM060 communication module No derating up to the rated operational current I of the molded case circuit breaker COM060 COM060 communication module No derating up to the rated operational current I of the molded case circuit breaker Example 1 Starting point:...
  • Page 466 Technical specifications 6.4 Derating 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 467: Appendix

    Appendix Standards and approvals Description Table A- 1 International standards that the molded case circuit breakers of the 3VA5 and 3VA6 ranges meet Standard Title CISPR11 Class A Limits and methods of measurement of radio interference suppression of equipment in industrial environments. Class B Limits and methods of measurement of radio interference suppression of equipment in domestic environments.
  • Page 468 National standards that the 3VA UL molded case circuit breakers meet You will find the national standards that the 3VA UL molded case circuit breakers meet at (http://www.siemens.com/3VA-Documentation) Certification by marine classification societies You will find the marine approvals that the 3VA UL molded case circuit breakers meet at (http://www.siemens.com/3VA-Documentation)
  • Page 469: Esd Guidelines

    ESD guidelines Electrostatic sensitive devices (ESD) ESD components are destroyed by voltage and energy far below the limits of human perception. Voltages of this kind occur as soon as a device or an assembly is touched by a person who is not electrostatically discharged. ESD components which have been subject to such voltage are usually not recognized immediately as being defective, because the malfunction does not occur until after a longer period of operation.
  • Page 470 ESD guidelines B.1 Electrostatic sensitive devices (ESD) The diagrams below illustrate the required ESD protective measures for electrostatic sensitive devices. ESD seat ESD standing position ESD seat and ESD standing position Protective measures Conductive floor ESD table ESD footwear ESD smock ESD bracelet Panel ground connection Figure B-1...
  • Page 471: List Of Abbreviations

    List of abbreviations Table of abbreviations Summary Table C- 1 Meaning of abbreviations used in this document Abbreviation Meaning AC voltage ACTIVE (ready signal) ALARM (pre-alarm) ASCII American Standard Code for Information Interchange [Modbus interface] ATAM Adjustable Thermal Adjustable Magnetic Trip Unit (adjustable thermal over- load release, adjustable magnetic trip unit with short-circuit protection) ATFM Adjustable Thermal Fixed Magnetic Trip Unit (adjustable thermal overload...
  • Page 472 List of abbreviations C.1 Table of abbreviations Abbreviation Meaning HH-fuse High-voltage fuses High-intensity discharge Instantaneous (short-circuit protection) Isolated I- / O- Input / Output International Electrotechnical Commission INST [tripping INST [tripping characteristic] characteristic] INSTA Final distribution area International Protection Injection Tester Isolated ground, French: "Isolé...
  • Page 473 List of abbreviations C.1 Table of abbreviations Abbreviation Meaning Residual Current Release Reclose (automatic reset) RJ [connector] Registered Jack Root Mean Square RS [interface] Formerly: Radio Selector; now usually: Recommended Standard Remote Terminal Unit [Modbus interface] Short circuit alarm switch Programmable logic controller Shunt trip Shunt trip flexible...
  • Page 474 List of abbreviations C.1 Table of abbreviations Table C- 2 Meaning of symbols and abbreviations Symbol/ Meaning abbreviation Δt Delay time Residual current; rated residual current; response current Δn Inrush current " Initial balanced short-circuit current Let-through energy Take-over current Pickup value blocking protection Making capacity;...
  • Page 475 List of abbreviations C.1 Table of abbreviations Symbol/ Meaning abbreviation "Virtual" trip time of I protection; highest trip time associated with rated tripping current of instantaneous trip Trip time associated with current setting value of adjustable overload release Trip time; delay time; time-lag class Trip time associated with short-time delayed tripping current;...
  • Page 476 List of abbreviations C.1 Table of abbreviations 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 477: Conversion Tables

    Conversion tables Conversion tables The U.S. units can be converted to the corresponding European/metric units using the conversion tables listed. Note No liability assumed for completeness or accuracy No liability can be assumed for the completeness or accuracy of the values listed in this section of the manual.
  • Page 478 Conversion tables D.1 Conversion tables kcmil ↔ mm conversion table AWG / kcmil Diameter d/mm 14.6 17.3 18.49 20.65 22.68 26.16 kcmil 1000 29.26 1500 35.86 2000 41.45 1010 1) Diameter over Round Concentric-Lay-Stranded Conductors for Classes B, C and D Source: Standard UL83 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 479 Conversion tables D.1 Conversion tables Other conversions Conversion factors for units of length Length Conversion factor 1 inch (") 25.4 millimeters (mm) 1 centimeter 0.3937 inches (") Conversion factors for units of weight Weight Conversion factor 1 ounce (Oz.) 28.35 grams (g) 1 pound (lb.) 0.454 kilograms (kg) 1 kilogram (kg)
  • Page 480 Conversion tables D.1 Conversion tables 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 481: Glossary

    Glossary AUTO Method of remote operation of the motor operators via control cables, e.g. PLC. Breaking capacity The breaking capacity is the rms value of the current at a specific cos φ (power factor) and a specific voltage which can be safely interrupted by a switching device or fuse under prescribed conditions.
  • Page 482 Glossary MANUAL Local, manual operating mode of motor operators. Protective characteristic The protective characteristic is determined by the rated operational current and the setting and tripping values of the circuit breaker. Rated breaking capacity The circuit breaker must disconnect this current three times without damage. This is followed by, among other things, a check of the operating characteristics.
  • Page 483 Glossary Rated residual current The rated residual current is the fault (residual) current for which residual current- Δn operated circuit breakers are designed. The residual current rating is declared on the rating plate of the device. Rated service short-circuit breaking capacity The rated service short-circuit breaking capacity is the short-circuit current determined by the operational voltage that a molded case circuit breaker is capable of interrupting...
  • Page 484 Glossary Rated short-time current Permissible rms value of the AC component of the prospective short-circuit current which the switching device is capable of conducting for a specific time period, e.g. from 0.05 s to 1 s (thermal short-circuit strength). Rated short-time withstand current The rated short-time withstand current is specified as an rms value of the short-circuit current and characterizes the thermal strength of a circuit of a switchgear assembly under...
  • Page 485 Glossary Short-circuit strength This is the resistivity of a switching device in the closed state, along with its components (e.g. trip units), or a complete switchboard to the electrodynamic and thermal stresses which arise in the event of a short circuit. The characteristic for the dynamic stress is the rated peak withstand current, which is the maximum instantaneous value of the short-circuit current.
  • Page 486 Glossary 3VA molded case circuit breakers with UL and IEC certification Manual, 01/2019, L1V30435333-01...
  • Page 487: Index

    Index Breaker position indication CONNECT, 30 DISCON, 30 TEST, 30 3VA UL connection options, 329 UNBLOCK, 30 3VA5, 17 Breaking capacity 3VA6, 18 Direct current, 143 Bus connectors extended Front, 194 Bus connectors offset, 196 Accessories Busbars, 171 3VA5, 151 3VA6, 151 Color coding, 34 Internal, 152...
  • Page 488 Index Conversion kit, 228, 237 Complete kit, 236 Plug-in technology, 228 Conversion kit, 237 Cover frame Defined position, 235 Labeling plate, 380 Installation overview, 224 Tolerance compensator, 379 Position signaling switch, 244 Current limitation, 48 Rear interlock, 325 Current sensor, 95 Sliding clutch, 235 Current setting value, 68 Variable depth adapter, 277...
  • Page 489 Index Front busbar connector Control wire tap, 220 Key data, 40 Front mounted rotary operator Knowledge Manager, 41 Indication of the breaker status, 265 Interlocking technology, 269 Locking technology, 268 Labeling plate (cover frame), 380 Labels, 39 Limitation of rated operational current G protection, 70 3VA6, 458 Ground-fault protection, 70...
  • Page 490 Index No-load switching operation, 162, 389, 395 Rotary double-contact system, 49 Nut keeper kit, 192 Rotary operator Switching position, 32 Operating mode (EFB300), 342 Operation of molded case circuit breaker, 47 Setting trip parameters, 67 Operator kit with Bowden cable, 33, 286 Shock resistance, 52 Door interlock, 287 Short-circuit protection...
  • Page 491 Index Auxiliary release, 164 Auxiliary switch, 160 Variable depth adapter, 277 External current transformer for N conductor, 377 Vibration resistance, 52 Motor operator, 301 Position signaling switch, 256 TD300, 364 TD500 test device, 375 Technical Support, 10 Wire connector, 179 Terminal cover, 205 2 cables, 186 Extended, 206...

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