Accessories
4.8 Accessories for protection against unauthorized operation
3WA1 air circuit breaker
324 Equipment Manual, 02/2023, 92310000002-06
4.8.12 Locking provision to prevent racking of the withdrawable circuit breaker
when the control cabinet door is open
4.8.12.1 Description
This locking provision for withdrawable circuit breakers prevents racking of the
withdrawable circuit breaker independently of the breaker when the control cabinet door
is open. A Bowden cable is used for interlocking.
This locking provision cannot be combined with the following locking provisions:
• Locking provision to prevent closing of the withdrawable circuit breaker when the
control cabinet door is open
• Locking provision to prevent racking of the withdrawable circuit breaker in the
disconnected position, all makes of safety lock
This locking provision can be retrofit.
You will find more information in the operating instructions available on the internet
(https://support.industry.siemens.com/cs/ww/en/view/109783669
).
4.8.12.2 Activation
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