Accessories
3.9 Accessories for locking and interlocking
3WJ Air Circuit breakers
134 Operating Instructions, 12/2022, L1V30828903001-01
3.9.5.3 Mechanical interlock of withdrawable Circuit Breakers
Article No.
Mutual mechanical interlock for withdrawable Circuit Breaker
Check the contents of the packaging
Preparatory work
1. Open the Circuit Breaker and discharge the stored-energy spring.
2. Rack the Circuit Breaker into maintenance position (disconnected postion) and remove it
from the guide frame (only withdrawable Circuit Breakers).
3. Remove the operator panel and the secondary disconnect terminals.
See chapter Preparatory and concluding installation steps for the installation of internal
accessories (Page 57)
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