Siemens Sentron 3VA Manual page 365

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
on.
2. Switch on the molded case circuit breaker (ON position).
3. Press the pushbutton labeled <TRIP> on the TD300.
The molded case circuit breaker trips:
The molded case circuit breaker is functioning correctly.
The molded case circuit breaker does not trip:
– Switch off the TD300.
– Switch off the molded case circuit breaker (OFF position).
– Detach the connecting cable from the molded case circuit breaker.
– Connect the TD300 correctly to the molded case circuit breaker again and switch on.
– Repeat the trip test (by pressing the pushbutton labeled <TRIP> on the TD300).
– If the molded case circuit breaker fails to trip again, contact Technical Support
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
(Page 10) .
Accessories
4.11 Test devices
363