Siemens SIRIUS 3RU21 Manuals

Manuals and User Guides for Siemens SIRIUS 3RU21. We have 1 Siemens SIRIUS 3RU21 manual available for free PDF download: Manual

Siemens SIRIUS 3RU21 Manual

Siemens SIRIUS 3RU21 Manual (206 pages)

Industrial Controls, Protection Devices, Thermal/Electronic Overload Relays

Brand: Siemens | Category: Control Unit | Size: 9 MB

Table of Contents

Table of Contents
5
1 Introduction

9
2 Standards

15
3 Product Description

17
- Introduction
  17
- Versions
  19
- Applications
  21
- 3RU21 Thermal Overload Relays
  23
- 3RB20 Electronic Overload Relays
  28
- 3RB21 Electronic Overload Relays
  32
- 3RB30 Solid-State Overload Relays
  36
- 3RB31 Solid-State Overload Relays
  41
4 Product Combinations

47
5 Functions

49
6 Configuration

59
7 Mounting

81
8 Connection

99
9 Operation

115
- Setting the Current
  115
- Setting the Tripping Class/Ground-Fault Detection (3RB21 / 3RB31)
  116
- RESET after Release
  117
- TEST Function
  120
- Response of the Auxiliary Contacts
  121
10 Accessories

123
- Terminal Support for Stand-Alone Assembly
  124
- Description
  124
- Mounting/Disassembly
  125
- Mechanical Remote RESET
  129
- Release Slide
  129
- Description
  129
- Mounting/Disassembly
  130
- Cable Release
  131
- Description
  131
- Mounting/Disassembly
  132
- Module for Electrical Remote RESET (3RU21 Only)
  134
- Description
  134
- Connecting Remote Reset
  134
- Mounting/Disassembly
  135
- Sealable Cover
  136
- Description
  136
- Mounting
  137
- Covers for Ring Cable Lug Connections
  139
- Description
  139
- Terminal Cover for Cable Lug Connection and Busbar Connection
  140
- Description
  140
- Mounting
  141
- Terminal Covers for Box Terminal Block
  142
- Description
  142
- Mounting
  142
- Box Terminal Block
  143
- Description
  143
- Mounting
  144
11 Technical Data

147
- Technical Data in Siemens Industry Online Support
  147
- Overview Tables
  148
- Performance Features
  148
- General Data
  148
- Protection Functions - Overview
  149
- Equipment
  150
- Features of Overload Relays
  151
12 Circuit Diagrams

153
- Cax Data
  153
- Internal Circuit Diagrams 3RU2
  154
- 3RB20 Internal Circuit Diagrams
  156
- 3RB21 Internal Circuit Diagrams
  157
- Internal Circuit Diagrams 3RB30
  158
- Internal Circuit Diagrams 3RB31
  160
- Wiring Examples
  162
- Types of Coordination
  165
- References
  167
  - Manuals - SIRIUS Modular System
    168
  - More Information
    170
- Dimension Drawings (Dimensions in MM)
  171

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