Accessories 
  4.8 Accessories for protection against unauthorized operation 
3WA1 air circuit breaker 
Equipment Manual, 02/2023, 92310000002-06 
323 
4.8.11.2  Activation 
The locking provision can only be activated in the disconnected position or when the 
guide frame is empty. Activation is performed by turning the key in the clockwise 
direction and then removing it.  
The key cannot be turned and removed in the test and connected positions. 
Note 
To release the racking lock, firs
t move the key a little in the lock such that the block in 
the lock releases itself. Then turn the key counterclockwise to unlock.
 
4.8.11.3  Part number 
 
Locking provision to prevent racking of the withdrawable 
circuit breaker in the disconnected position 
The lock must be retrofit by 
the customer; it is not 
available from the factory 
preinstalled. 
1) 
  The scope of supply comprises the Bowden cable and the lock in the control cabinet door. 
 
You can purchase the accessories in the Siemens Industry Mall 
(http://www.siemens.com/product?3WA9111-0BA8*).