Status of the circuit breaker
3.2 The ETU600 electronic trip unit as an information center
3WA Air Circuit Breaker Communication
16 System Manual, 11/2021, 92310000004-02
3.2 The ETU600 electronic trip unit as an information center
The ETU600 electronic trip unit of the 3WA air circuit breaker provides a wide range of
information:
• Tripping cause
• Status of the ETU
• Status of the mechanical system
• Status of position of withdrawable circuit breaker in the guide frame
• Information about the DAS+ maintenance mode
• Active warnings
• Active alarms
• ETU error messages (self-monitoring and diagnostics function of ETU600)
• Status of the main contacts of the circuit breaker
The information can be called up via registry entries.