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TERASAKI TemBreak PRO B User Manual

Moulded case circuit breaker smart electronic trip unit from 250a up to1000a
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B Model Moulded Case Circuit Breaker
Smart Electronic Trip Unit from 250A up to 1000A
USER MANUAL
NHP Electrical Engineering Products
1300 NHP NHP
AU
0800 NHP NHP
NZ
Version
0.0.1
nhp.com.au
nhp-nz.com

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Summary of Contents for TERASAKI TemBreak PRO B

  • Page 1 B Model Moulded Case Circuit Breaker Smart Electronic Trip Unit from 250A up to 1000A USER MANUAL Version 0.0.1 1300 NHP NHP nhp.com.au NHP Electrical Engineering Products 0800 NHP NHP nhp-nz.com...
  • Page 2 The contents of this document have been reviewed to ensure that the reliability of the information is correct at time of publ ication. NHP or Terasaki are not responsible for printing or damage resulting from errors. NHP or Terasaki reserve the right to make c orrections and changes needed in subsequent edition.
  • Page 3 Summary of Changes This section highlights the details of changes made since the previous issue of this document. The versioning convention used to track changes in this document follows the structure Vx.y.z where: x: Major revision, where extensive changes are made which is generally incompatible with the previous version. Such changes may include new products and/or features, or removal of information which is no longer relevant or applicable to the previous version.
  • Page 4 Table of Contents Using this manual Section 1. Monitor screen (MONI): Safety Precautions Section 2. Setup screen (SETUP): Summary of Changes Section 3. Reset screen (RESET): Section 4. Setting 1 screen (SET1): Table of Contents Section 5. Setting 2 screen (SET2): Introduction Section 6.
  • Page 5 Introduction This user manual describes the TemBreak PRO B Model SMART Electronic (B_SX & B_SE) MCCB’s features and instructions for use and provides information for commissioning and configuring. Some additional features may require the use of additional products and accessories to achieve full utilization of that feature. Refer the respective User Manual in the TemBreak PRO series for additional information on the respective product.
  • Page 6 Introduction Terminology and Abbreviations Abbreviation Description Abbreviation Description Maintenance Interface Port: Plug for temporary Auxiliary Communications port: Plug for Smart auxiliary / connection to OCR testing, servicing, and maintenance alarm contact block tools Alarm: An auxiliary contact indicating trip status Neutral ASCII American Standard Code for Information Interchange...
  • Page 7 Product Information Features Electronic overcurrent protection, for general & selectivity/cascading applications 3 & 4 Pole Adjustable Long Time (I Base current I is adjustable from 40% - 100% of the nominal rated current I Predefined LSI curves 250A: 5 characteristic curves 400A to 1000A: 5 characteristic curves, Instantaneous only Optional Adjustable Neutral Pole protection (OFF, 50%, 100%)
  • Page 8 Product Information Part Number Break Down 160 F 2 4 160 BE G a) Model Type d) Pole Pitch Size (mm) Basic applications (160…250 A) Mid to advanced applications (160…630 A) High current, high kA applications e) No. of Poles (160…1600 A) Earth Leakage applications (125…250 A)
  • Page 9 Product Information Available MCCBs in the TemBreak PRO range Rating Frame Size Short Circuit Break Capacity 1000 (kA) A160E – TF A160E – FF A250E – TM P400E-TM P630E – TM B160E – FF A160F – TF A250F – TM P160F –...
  • Page 10 Product Information Label Identification The label on the MCCB features information to aid in product identification. Description Notes Circuit Break Identifier Identifies the model type, ampere frame, and I rating. Trip unit type The trip unit type is indicated by the colour of the label. White label –...
  • Page 11 Product Information B250P_SE Information Frame / Model Quantity Unit Condition B250P_SE Number of Poles 3, 4 Nominal current ratings 40, 125, 45°C Trip unit ratings 160, 250 50°C ─ 55°C ─ Electrical characteristics Rated maximum operational voltage AC 50/60 Hz ─...
  • Page 12 Product Information B400P_SE, B400P_SX, B400R_SE & B400R_SX Information Frame / Model Quantity Unit Condition B400P_SX B400P_SE B400R_SX B400R_SE Number of Poles 3, 4 3, 4 3, 4 3, 4 Nominal current ratings ─ ─ ─ ─ 45°C Trip unit ratings ─...
  • Page 13 Product Information B800N_SE, B800N_SX, B800H_SE & B800H_SX Information Frame / Model Quantity Unit Condition B800N_SX B800H_SE B800H_SX B800_SE Number of Poles 3, 4 3, 4 3, 4 3, 4 Nominal current ratings 45°C 630, 800 630, 800 630, 800 630, 800 Trip unit ratings 50°C ─...
  • Page 14 Product Information B800G_SE, B800G_SX, B800P_SE & B800G_SX Information Frame / Model Quantity Unit Condition B800G_SX B800G_SE B800P_SX B800P_SE Number of Poles 3, 4 3, 4 3, 4 3, 4 Nominal current ratings 45°C Trip unit ratings 50°C Electrical characteristics Rated maximum operational voltage AC 50/60 Hz ─...
  • Page 15 Product Information B800R_SE & B800R_SX Information Frame / Model Quantity Unit Condition B800R_SX B800R_SE 3 ,4 3 ,4 Number of Poles Nominal current ratings 45°C Trip unit ratings 50°C Electrical characteristics Rated maximum operational voltage AC 50/60 Hz ─ ─ Rated insulation voltage Rated impulse withstand voltage (kV)
  • Page 16 Product Information B1000N_SE, B1000N_SX, B1000H_SE & B1000H_SX Information Frame / Model Quantity Unit Condition B1000N_SX B1000N_SE B1000H_SX B1000H_SE Number of Poles 3, 4 3, 4 3, 4 3, 4 Nominal current ratings 45°C 1000 1000 1000 1000 Trip unit ratings 50°C ─...
  • Page 17 Internal Accessories Internal accessories include Auxiliary and Alarm contacts, Shunt Trip and Undervoltage Trip (UVT) modules, which may be installed under the front cover of the MCCB in various combinations to provide additional functionality and connection with external control circuits. Auxiliary &...
  • Page 18 Internal Accessories Shunt Trip A shunt (normally de-energized) can be installed to trip the MCCB by applying voltage to the shunt coil. Part Number Rated voltage Connection type AC (V) DC (V) T2SH00A10TA ─ Terminal T2SH00A20TA 230…240 ─ Terminal 400…415 ─...
  • Page 19 Plugs and Ports The TemBreak PRO B_SX & B_SE circuit breaker is equipped with specific connectors for connecting & interfacing devices and accessories. Port Description Connection port for OCR checker to test the current setting values for LSIG trip functions. TEST IN Located to the right of the embedded display front cover.
  • Page 20 Installation Precautions WARNING: To prevent electrical shock and damage to equipment, disconnect and isolate power source upstream of the MCCB before installing or servicing the MCCB including its connected accessories. Notice: To ensure correct performance, and integrity of equipment, the installation instructions and recommendations provided herein shall be respected.
  • Page 21 Direction of Power Supply Power supply may be fed in either direction with respect to the MCCB without affecting performance. Negative (−) Positive (+) Reverse Supply Forward/Normal Supply TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 22 Interpole barriers or terminal covers may be used to achieve creepage and clearance requirements. Conductors must not impede the flow of ionised gas and allow it to clear and disperse safety. Interpole barriers are supplied as standard with Terasaki MCCBs for the line side only. 2 barriers with 3P MCCBs and 3 with 4P MCCBs.
  • Page 23 Installation Insulating Distance When earth metal is installed within proximity of the breakers, the correct insulating distance must be maintained, (refer to Minimum Clearance). This distance is necessary to allow the exhausted arc gases to disperse. This could include the mounting plate or side panel within a switchboard. Minimum Clearance Below illustrates the minimum clearance that must be maintained.
  • Page 24 Installation Internal Accessory Mounting Locations B250, B400, B800, and B1000 frame sizes have different internal mounting locations for auxiliary contacts, alarm contacts, shunts and, UVTs. Left-side and right-side mounting locations are independent and accept unique combinations. For example, shunts and UVTs may only be mounted on the right side, whereas auxiliary and alarm contacts may be mounted on either left or right side.
  • Page 25 Installation B400 internal accessories combination Legend TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 26 Installation B800 & B1000 internal accessories combination Legend TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 27 Installation Alarm, Shunt & UVT Installation The alarm, shunt and UVT have a trip bar that needs to interact with the MCCBs trip mechanism. As such they must be installed in a specific way. Refer to the supplied Installation Instructions for the respective accessories for further detail. Alarm &...
  • Page 28 Installation Shunt & UVT installation Action Note Switch the Smart MCCB to the Tripped Position. Open the front cover of the MCCB. Locate the shunt or UVT’s trip bar into the MCCB trip mechanism slot. Position the shunt or UVT into place and click in to secure;...
  • Page 29 Protection Settings Trip Curve The TemBreak PRO B_SX & B_SE electronic trip unit protects against overcurrent and short circuit faults for many types of electrical distribution systems. The B_SX & B_SE Trip Units has protective characteristics according to the requirements of the standard AS/NZS IEC 60947-2. All protection functions are based on the effective value (RMS) of power, to reduce the effects of current harmonics.
  • Page 30 Section on Ict required for B400-B1000………… TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 31 Protection Settings Pre-Defined Curves The B250_SE does not allow full customisation of the LSI protection functions; however, it does allow the election of several pre-defined protection curves, which cover a wide range of applications and industry requirements. Most pre-defined curves also offer adjustment of I to shift the curve along the current (I) axis for better refinement Notice: Pre-defined curves can differ between MCCB models and trip unit ratings, refer to...
  • Page 32 Protection Settings LSI Adjusted Curves The B400_SE & SX through B1000_SE & SX allows full customisation of the LSI protection functions. The Long Time Delay protection protects against current overloads or surges in power distribution or motor control applications. Long Time Delay protection is an inverse-time protection which includes a thermal image function. TemBreak B_SX &...
  • Page 33 Protection Settings Long Time Delay (LTD) protection Long Time Delay Settings Description Long Time Delay protection threshold (current rating) Long Time Delay (time delay) Adjusting I (Current) The LTD protection trip range is: 1.05...1.20 x I according to standard AS/NZS IEC 60947.2. The trip threshold tolerance I for the long-time delay protection is +5% to +20%.
  • Page 34 Protection Settings Long Time Delay (LTD) protection Long Time Delay Settings Description Long Time Delay protection threshold (current rating) Long Time Delay (time delay) settings (A) Rating (I ] x0.8 ] x0.85 ] x0.9 ] x0.95 ] x1.0 400A 630A 535.5 598.5 800A...
  • Page 35 Protection Settings Long Time Delay (LTD) protection Adjusting t (Time Delay) The derivation of the constant k is given by the below formulae, where t and I are reference values depending on the MCCB model and trip unit, and the curve selected.
  • Page 36 Protection Settings Long Time Delay (LTD) protection Adjusting t (Time Delay) The t time delay defines the trip time of the long-time delay protection at a referenced current, either as a fixed value or as a multiple of I The t time delay can only be adjusted by selecting a pre-defined curve.
  • Page 37 Protection Settings Thermal memory / Hot-Cold start mode TemBreak PRO B_SX & B_SE electronic Trip Units have a thermal imaging function, which models the active heating and cooling of electrical conductors as current passes through them. The thermal imaging function calculates a thermal value (θ) for the conductors, which trips the MCCB when its thermal threshold (θ...
  • Page 38 Protection Settings Short Time Delay Protection (STD) The short time protection is designed to protect against low level short circuits. Short Time Delay Settings Description (x I Short Time Delay protection threshold (ms) Short Time Delay I²t (ON / OFF) Inverse I²t time Adjustment I (Current)
  • Page 39 Protection Settings Short Time Delay Protection (STD) The short time protection is designed to protect against low level short circuits. Short Time Delay Settings Description (x I Short Time Delay protection threshold (ms) Short Time Delay I²t (ON / OFF) Inverse I²t time Adjustment I (Current)
  • Page 40 Protection Settings Instantaneous Protection (INST) Instantaneous protection is designed to protect against high current short circuits. This protection is independent of time and is set as a multiple of I Instantaneous Delay Settings Description (x I Instantaneous protection threshold Adjusting I (Current) The l trip threshold tolerance for instantaneous protection is ±20%.
  • Page 41 Protection Settings Instantaneous Protection (INST) Instantaneous protection is designed to protect against high current short circuits. This protection is independent of time and is set as a multiple of I Instantaneous Delay Settings Description (x I Instantaneous protection threshold Adjusting I (Current) The l trip threshold tolerance for instantaneous protection is ±20%.
  • Page 42 Protection Settings Ground/Earth Fault Protection (GF) Ground Fault (GF) protection is protection against high strength insulation / earth faults. Ground fault protection is available for the B400 to B1000 in 3P and 4P MCCBs and adjustable via the display unit. Ground Fault Protection Settings Description (x I...
  • Page 43 If NP is also required see Neutral Protection (NP). Annex A for Dimensions & Annex G for CT Wiring. WARNING: Terasaki purpose designed CT must be used, use of alternative CTs is not permitted. TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 44 Protection Settings Neutral Protection (NP) Neutral protection is available with 4P B_SE_N MCCBs with Neutral trip unit option added. It is particularly useful when the cross-section of the neutral conductor is reduced in relation to the phase conductors. Neutral protection is based off the standard LTD and STD protection parameter of the main phases. The I and I parameters for the Neutral pole are adjusted according to the set Neutral Coefficient percentage.
  • Page 45 Alarms & Indication The TemBreak PRO B_SE trip unit provides alarming to indicate trip status and warning. Overload alarm: Provides a warning about current overload which may result in an imminent trip. Pre-Trip alarm (PTA): Optional on select MCCB models. Provides an early warning for current loading which is approaching the overload trip region of the trip unit.
  • Page 46 Power supply requirement Operation of the PTA option requires an external trip unit control power supply, which is mounted either locally on the side of the MCCB (all models), or remotely on special request (all models excluding B250). trip unit power supply specifications Attribute Voltage 200…240 Vac...
  • Page 47 Navigation B400 – B1000 models have an embedded display. The following describes how to display measurements and make changes to the trip unit settings. Operation buttons There are five operation buttons beside the LCD. Use the operation buttons as follows: FUNC.
  • Page 48 Navigation Available screens of B400-B1000 models B400 – B1000 models trip unit has six screens available as shown below. Press the MENU button to go to the next screen. Monitor screen (MONI): See section 1. This is the initial screen that appears when control power is turned on. This screen allows you to view the present max phase current, current of each phase and max phase voltage.
  • Page 49 Navigation Section 1. Monitor screen (MONI): Below image shows how to navigate the monitor screen. and Table 3 lists the items that can be viewed on this screen. ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ Monitor screen navigation Below table lists the items that can be viewed on monitor screen.
  • Page 50 Navigation Section 2. Setup screen (SETUP): Below image shows how to navigate the SETUP screen. ◯ ×１ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ Cancel Change ◯ ◯ ◯ Setting change mode Other settings can be changed in the same way on the respective sub screens.
  • Page 51 Navigation Section 2. Setup screen (SETUP): Below table lists the items that can be viewed on SETUP screen. Sub-screen item *1 Setting change Remarks Max phase current (present value) Initial display － ◯ 1 ◯ 2 CT rated primary current Disabled 400A or 250A (fixed) *3 Trip/alarm pickup settings...
  • Page 52 Navigation Section 3. Reset screen (RESET): Below image shows how to navigate the RESET screen. 2 ◯ ◯ ◯ ◯ Cancel Clear ◯ ◯ ◯ ◯ ◯ Reset screen navigation Clear mode • Other settings can be changed in the same way on the respective sub screens.
  • Page 53 Navigation (Setting 1 screen) See section4. ◯ TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 54 Navigation Section 4. Setting 1 screen (SET1): Below image shows how to navigate the SET1 screen. ◯ ◯ 3 ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ Cancel Change Setting 1 screen navigation Setting change mode • Other settings can be changed in the same way on the respective sub screens.
  • Page 55 Navigation Below table lists the items that can be viewed on SET1 screen. Sub-screen item *1 Setting range/Remarks Max phase current ◯ 1 Initial display (present value) ◯ 2 Rated current 125-150-175-200-225 (A) 175-200-225-250-300-350-400 (A) Long time delay trip pickup ◯...
  • Page 56 Navigation Section 5. Setting 2 screen (SET2): Below image shows how to navigate the SET2 screen. ◯ ×４ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ ◯ Cancel Change ◯ ◯ ◯ Setting change mode •...
  • Page 57 Navigation Below table lists the items that can be viewed on SET2 screen. Sub-screen item *1 Setting range/Remarks *2 *3 Max phase current (present value) Initial display ◯ 1 Ground fault trip mode TRIP/OFF ◯ 2 Ground fault trip pickup current [ICT] x (0.2-0.3-0.4-NON) (A) ◯...
  • Page 58 Navigation Section 6. Maintenance screen (MAINTE): Below image shows how to navigate the MAINTE screen. ◯ ×６ ◯ ◯ ◯ Maintenance screen navigation Below table lists the items that can be viewed on MAINTE screen. Sub-screen item *1 Remarks Max phase current (present Initial display ◯...
  • Page 59 Navigation Section 7. TEST screen (MAINTE): WARNING: Overcurrent release function check and setting changes must be performed by competent persons. After completion of overcurrent release tests, be sure to return the settings to the original values. Failure to do so may cause a fire or burnout. Use the following procedure to perform OCR function check.
  • Page 60 Navigation ◯ ◯ ×７ ◯ ◯ ◯ ◯ ◯ ◯ ◯ : Flashing TEST screen navigation Below table lists the items that can be viewed on TEST screen. Sub-screen item *1 Remarks ◯ Present electrical power Initial display ◯ (Test start sub-screen) –...
  • Page 61 Navigation Section 8. Operation Indication and Indication Resetting Procedure The OCR indicates a trip/alarm event on the LCD as shown in below table. Pressing the ITEM button changes the display from "trip/alarm cause" / "fault current/voltage/power" to "operating time" (if applicable). Pressing the MENU button returns the display to t he previous screen.
  • Page 62 Navigation How to set the trip unit Be sure to open the breaker before making or changing settings. Make sure that control power is supplied. Peel the trip unit cover sealing sticker off. (See image below) Insert a flat-blade screwdriver into the recess at the right edge of the trip unit cover and pry the cover up while sliding it to the right to remove.
  • Page 63 Commissioning WARNING: Before applying power to the MCCB for the first time, an initial inspection must be performed. WARNING: Risk of nuisance tripping. Only qualified personnel are to set the protection levels. Failure to respect these instructions may cause death, serious injuries or equipment damage.
  • Page 64 Commissioning Pre-Defined Curve Selection LTD, STD and INST protection is further defined by the selection of a pre-defined curve as selected via the Curve characteristic rotary dial, which is performed as follows. Refer to Protection Settings – Pre-Defined Curves section for further detail on selection of the pre-defined time-current curve. Action Note / Illustration Turn the MCCB to the OFF Position...
  • Page 65 Commissioning INST Protection Only Setting The B_BE can be configured for INST protection only by selecting the INST only pre-defined time-current curve as follows: Refer to Protection Settings – Instantaneous Protection (INST) section for further detail on setting I Action Note / Illustration Turn the MCCB to the OFF Position Open the transparent flap in order to access Curve...
  • Page 66 Commissioning LSIG 3P – GF Protection Adjustments (I On the LSIG 3P variant B_BE MCCB, the GF protection is configured by the GF DIP switch, which is used to enable or disable GF protection, and is performed as follows. Refer to Protection Settings –...
  • Page 67 Commissioning LSIG 4P – NP and GF Protection Adjustments (I On the 4P variant B_BE MCCB, NP protection mode is configured by the NP DIP switches, which is performed as follows. Refer to Neutral Protection (NP) section for further detail on NP protection. Action Note / Illustration Turn the MCCB to the OFF Position...
  • Page 68 Troubleshooting In the event of a problem when using the TemBreak PRO system, this section provides advice on how to resolve issues. Problem description Possible cause Remedial advice Abnormal voltage on load side Excessive wear of contacts Replace MCCB. Foreign matter interfering with contacts or contact surfaces Failure in ON position Reset operation not conducted...
  • Page 69 Annex A – Dimensions B250P TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 70 Annex A – Dimensions B250P TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 71 Annex A – Dimensions B400P / R TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 72 Annex A – Dimensions B400P / R TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 73 Annex A – Dimensions B800N / H / G Rated Current 630A 800A TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 74 Annex A – Dimensions B800N / H / G TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 75 Annex A – Dimensions B800P / R TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 76 Annex A – Dimensions B800P / R TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 77 Annex A – Dimensions B1000N / H TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 78 Annex A – Dimensions B1000N / H TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 79 Annex A – Dimensions Ground Fault CT T2GB40 T2GBX6 TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 80 Annex B - Time Current Curves B250_BE – I 40 A 1, 2, 3, 4, 5 LTD pick up current I 16 – 20 – 25 – 32 – 36 – 38 – 40 A (7 steps) 30A (fixed) 40A (fixed) Instantaneous only Standard curves 1 - 5 Additional special application curves next pages...
  • Page 81 Annex B - Time Current Curves B250_BE – I 40 A B250_BE B250_BE LTD pick up current I 16 – 20 – 25 – 32 – 36 – 38 – 40 A (7 steps) 30A (fixed) 40A (fixed) Instantaneous only Standard curves 1 - 5 Additional special application curves next pages Characteristic dial setting...
  • Page 82 Annex B - Time Current Curves B250_BE – I 40 A B250_BE LTD pick up current I 16 – 20 – 25 – 32 – 36 – 38 – 40 A (7 steps) 30A (fixed) 40A (fixed) Instantaneous only Standard curves 1 - 5 Additional special application curves next pages Characteristic dial setting @ 2 x I...
  • Page 83 Annex B - Time Current Curves B250_BE – I 125 A 1, 2, 3, 4, 5 LTD pick up current I 50 – 62 – 78 – 100 – 112 – 118 – 125 A (7 steps) 100A (fixed) 125A (fixed) Instantaneous only Standard curves 1 - 5 Additional special application curves next pages...
  • Page 84 Annex B - Time Current Curves B250_BE – I 125 A B250_BE B250_BE LTD pick up current I 50 – 62 – 78 – 100 – 112 – 118 – 125 A (7 steps) 100A (fixed) 125A (fixed) Instantaneous only Standard curves 1 - 5 Additional special application curves next pages Characteristic dial setting...
  • Page 85 Annex B - Time Current Curves B250_BE – I 125 A B250_BE LTD pick up current I 50 – 62 – 78 – 100 – 112 – 118 – 125 A (7 steps) 100A (fixed) 125A (fixed) Instantaneous only Standard curves 1 - 5 Additional special application curves next pages Characteristic dial setting @ 2 x I...
  • Page 86 Annex B - Time Current Curves B250_BE – I 160 A 1, 2, 3, 4, 5 LTD pick up current I 64 – 80 – 100 – 128 – 144 – 152 – 160 A (7 steps) Standard curves 1 - 5 Characteristic dial setting @ 2 x I @ 6 x I...
  • Page 87 Annex B - Time Current Curves B250_BE – I 250 A 1, 2, 3, 4, 5 LTD pick up current I 100 – 125 – 157 – 200 – 225 – 237 – 250 A (7 steps) 200A (fixed) 250A (fixed) Instantaneous only Additional special application curves next pages Standard curves 1 - 5...
  • Page 88 Annex B - Time Current Curves B250_BE – I 250 A B250_BE B250_BE LTD pick up current I 100 – 125 – 157 – 200 – 225 – 237 – 250 A (7 steps) 200A (fixed) 250A (fixed) Instantaneous only Standard curves 1 - 5 Additional special application curves next pages Characteristic dial setting...
  • Page 89 Annex B - Time Current Curves B250_BE – I 250 A B250_BE LTD pick up current I 100 – 125 – 157 – 200 – 225 – 237 – 250 A (7 steps) 200A (fixed) 250A (fixed) Instantaneous only Standard curves 1 - 5 Additional special application curves next pages Characteristic dial setting @ 2 x I...
  • Page 90 Annex B - Time Current Curves B400_BE – I 250 A 1, 2, 3, 4, 5, 6, 7 200A 250A Instantane LTD pick up current I 100 – 125 – 157 – 200 – 225 – 237 – 250 A (7 steps) (fixed) (fixed)
  • Page 91 Annex B - Time Current Curves B400_BE – I 250 A B400_BE B400_BE 200A 250A Instantane LTD pick up current I 100 – 125 – 157 – 200 – 225 – 237 – 250 A (7 steps) (fixed) (fixed) ous only Additional special application curves Standard curves 1 - 7 next pages...
  • Page 92 Annex B - Time Current Curves B400_BE – I 250 A B400_BE 200A 250A Instantane LTD pick up current I 100 – 125 – 157 – 200 – 225 – 237 – 250 A (7 steps) (fixed) (fixed) ous only Additional special application curves Standard curves 1 - 7 next pages...
  • Page 93 Annex B - Time Current Curves B400_BE – I 400A 1, 2, 3, 4, 5, 6, 7 320A 400A Instantane LTD pick up current I 160 – 200 – 252 – 320 – 360 – 380 – 400 A (7 steps) (fixed) (fixed) ous only...
  • Page 94 Annex B - Time Current Curves B400_BE – I 400A B400_BE B400_BE 320A 400A Instantane LTD pick up current I 160 – 200 – 252 – 320 – 360 – 380 – 400 A (7 steps) (fixed) (fixed) ous only Additional special application curves Standard curves 1 - 7 next pages...
  • Page 95 Annex B - Time Current Curves B400_BE – I 400A B400_BE 320A 400A Instantane LTD pick up current I 160 – 200 – 252 – 320 – 360 – 380 – 400 A (7 steps) (fixed) (fixed) ous only Additional special application curves Standard curves 1 - 7 next pages Characteristic dial...
  • Page 96 Annex B - Time Current Curves B800_BE – I 630 A 1, 2, 3, 4, 5, 6, 7 B800_BE LTD pick up current I 250 – 315 – 395 – 440 – 470 – 505 – 535 – 565 – 600 – 630 A (10 steps) Additional special application curves Standard curves 1 - 7...
  • Page 97 Annex B - Time Current Curves B800_BE – I 630 A B800_BE B800_BE LTD pick up current I 250 – 315 – 395 – 440 – 470 – 505 – 535 – 565 – 600 – 630 A (10 steps) Additional special application curves Standard curves 1 - 7 next pages...
  • Page 98 Annex B - Time Current Curves B800_BE – I 630 A B800_BE LTD pick up current I 250 – 315 – 395 – 440 – 470 – 505 – 535 – 565 – 600 – 630 A (10 steps) Additional special application curves Standard curves 1 - 7 next pages Characteristic dial...
  • Page 99 Annex B - Time Current Curves B800_BE – I 800 A 1, 2, 3, 4, 5, 6, 7 B800_BE LTD pick up current I 320 – 400 – 505 – 560 – 600 – 640 – 680 – 720 – 760 – 800 A (10 steps) Additional special application curves Standard curves 1 - 7...
  • Page 100 Annex B - Time Current Curves B800_BE – I 800 A B800_BE B800_BE LTD pick up current I 320 – 400 – 505 – 560 – 600 – 640 – 680 – 720 – 760 – 800 A (10 steps) Additional special application curves Standard curves 1 - 7 next pages...
  • Page 101 Annex B - Time Current Curves B800_BE – I 800 A B800_BE LTD pick up current I 320 – 400 – 505 – 560 – 600 – 640 – 680 – 720 – 760 – 800 A (10 steps) Additional special application curves Standard curves 1 - 7 next pages Characteristic dial...
  • Page 102 Annex B - Time Current Curves B1000_BE – I 1000 A 1, 2, 3, 4, 5, 6, 7 B1000_BE LTD pick up current I 400 – 500 – 630 – 700 – 750 – 800 – 850 – 900 – 950 – 1000 A (10 steps) Additional special application curves Standard curves 1 - 7...
  • Page 103 Annex B - Time Current Curves B1000_BE – I 1000 A B1000_BE B1000_BE LTD pick up current I 400 – 500 – 630 – 700 – 750 – 800 – 850 – 900 – 950 – 1000 A (10 steps) Additional special application curves Standard curves 1 - 7 next pages...
  • Page 104 Annex B - Time Current Curves TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 105 Annex C - I t Let-Through Curves B250P TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 106 Annex C - I t Let-Through Curves B400P / R TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 107 Annex C - I t Let-Through Curves B800N / H TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 108 Annex C - I t Let-Through Curves B800P / R TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 109 Annex C - I t Let-Through Curves B1000N / H TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 110 Annex D - Peak Let-through Curves B250P TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 111 Annex D - Peak Let-through Curves B400P / R TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 112 Annex D - Peak Let-through Curves B800N / H TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 113 Annex D - Peak Let-through Curves B800P / R TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 114 Annex D - Peak Let-through Curves B1000N / H TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 115 Annex E – Watts Loss Impedance Watts Loss Rating Impedance per pole Watts Loss per pole Watts Loss per product Ampere Frame Pole numbers In (A) (mΩ) Based from Impedance (W) Based from Impedance (W) 0.40 0.64 1.92 0.40 6.24 18.73 B250P 3P / 4P...
  • Page 116 Annex F – Temperature Ratings Tables Maximum setting of the Ir dial/s at the nominated current at the specified ambient. Rated Temperature Rated Current (A) Connection Rated MCCB Type type 30°C 35°C 40°C 45°C 50°C 55°C 60°C 65°C 70°C Front Conn. 250 A 237.5 B250P...
  • Page 117 Annex G – Wiring Diagrams & Terminal Designations Auxiliaries General Purpose Heavy-duty Alarms General Purpose Heavy-duty Shunts UVTs TemBreak B_SX & SE-UM-001-EN – V0.0.1...
  • Page 118 Annex G – Wiring Diagrams & Terminal Designations Ground Fault 4 Application Location The 4 CT is required to be installed on the neutral line with the MCCB and after the MEN Link. LINE LOAD POSITION OF 4TH CT NEUTRAL EARTH CT Orientation To ensure that the CT is orientated correctly for current flow.
  • Page 119 Annex G – Wiring Diagrams & Terminal Designations Ground Fault CT Wiring B400BEG – B1000_BEG MCCB will have a terminal block mounted to the right -hand side with the connection terminals for the Ground Fault CT. These terminals will be labelled Connect the terminal of the CT to the terminal of the terminal box and repeat for...
  • Page 120 B_BE-UM-001-EN Version 0.0.1 Published 09th Nov 2023 1300 NHP NHP nhp.com.au NHP Electrical Engineering Products 0800 NHP NHP nhp-nz.com...