ABB E2B 20 User Manual

Emax
Installation, service and
maintenance instructions
for low voltage air circuit-breakers
Installation and service
instructions
1SDH000460R0002 L2778

ABB E2B 20 Specifications

General

Brand	ABB
Model	E2B 20
Category	Circuit breakers
Language	English

Summary

4. Installation

4.3 Installation of the fixed part of the withdrawable circuit-breaker

5. Electrical connections

5.1 Connections to the power circuit

Explains terminal shapes, busbar positioning, and assembly procedures for power connections.

5.3 Wiring the circuit-breaker auxiliary circuits

6. Putting into service

6.1 General procedures

7. Instructions for use

7.1 Operating and signalling parts

Identifies and describes the circuit-breaker's operating controls and indicator signals.

7.2 Circuit-breaker closing and opening procedures

Explains manual and electrical procedures for closing and opening the circuit-breaker.

8. Maintenance

8.3 Maintenance operations

Details general inspection, contact wear checking, and mechanism maintenance.

9. Measures to be taken for any operating anomalies

11. Protection releases - General notes

11.1 Safety notes

Provides essential safety warnings for handling and using the device.

12. SACE PR121/P Release - Identification

12.2 Specifications

Details electrical, environmental, and protection specifications for the PR121/P release.

12.5 User interface

13. SACE PR122/P Release - Identification

13.2 Specifications

13.3 Putting into service

14. SACE PR123/P Release - Identification

14.2 Specifications

14.5 Operating instructions / Operation in service

15 Modules

15.1 PR120/V - MEASURING Module

17. Overall dimensions

18. Circuit diagrams