Siemens SENTRON 3WA1 - Page 46

Description
2.2 Circuit breakers and non-automatic circuit breakers
3WA1 air circuit breaker
44 Equipment Manual, 02/2023, 92310000002-06
11. Close the control cabinet door.
12. Move the circuit breaker to the connected position (for withdrawable circuit breaker).
13. Insert the racking handle (for withdrawable circuit breakers).
14. Charge the stored energy mechanism.
Conditions for ready-to-close status (depending on equipment with accessories)
The following conditions must be fulfilled for the ready-to-close status:
Undervoltage release:
energized (auxiliary voltage
present)
Shunt trip:
not energized
Closing coil
not energized
Mechanical circuit breaker interlocking
not effective
Locking provisions
not activated
Observing status displays
The circuit breaker is ready for closing when the READY window displays OK. It can then
be closed manually or by means of a control command.