Accessories
4.8 Accessories for protection against unauthorized operation
3WA1 air circuit breaker
322 Equipment Manual, 02/2023, 92310000002-06
4.8.11 Locking provision to prevent racking of the withdrawable circuit breaker
in the disconnected position
4.8.11.1 Description
This locking provision prevents racking in of the withdrawable circuit breaker from the
disconnected position to the test position by blocking the racking handle in the
disconnected position such that it cannot be pulled out.
A Bowden cable transfers the locking signal from a safety lock to the locking provision.
The Bowden cable and safety lock are included in the scope of supply.
Note
When the locking provision is activated, the circuit breaker cannot be removed from the
guide frame. Nor is it possible to insert a circuit breaker in the guide frame.
The locking provision is available in four versions:
• Key operation with CES lock
• Key operation with IKON lock
• Key operation with Profalux lock
• Key operation with Ronis lock
This locking provision cannot be combined with the following locking provisions or
locking devices:
• Locking provision to prevent opening of the control cabinet door when the circuit
breaker is closed
• Locking provision to prevent racking of the withdrawable circuit breaker when the
control cabinet door is open
• Locking provision to prevent unauthorized closing of the withdrawable circuit breaker,
all makes of safety lock
The 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/109783670
).
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