Siemens Sentron 3VA Manual page 312

Accessories
4.7 Locking and interlocking
To lock the 3VA UL molded case circuit breaker in the OFF (O) position, the key must be
turned to the vertical "locked" position.
Locking in the ON (I) position
For safety reasons, a deliberate action is required to lock the breaker in the ON (I) position.
The slide for locking in the ON position must be used for this purpose. Further information
can be found in the relevant operating instructions.
Use of cylinder locks (type Ronis) for other applications
Cylinder locks (type Ronis) can also be used in the following applications:
● For locking the travel of draw-out technology, see chapter Draw-out technology
(Page 234)
● For locking in the manual operators of the 3VA UL molded case circuit breaker, see
chapter Manual operators (Page 258)
Installation of other accessories
The installation of the cylinder lock in the accessory compartment of the molded case circuit
breaker partly excludes the installation of other accessory components, e.g. front mounted
accessories such as manual and motor operators as well as front interlocks. Likewise the
cylinder lock blocks slots for internal accessories, for overview see chapter Mounting
locations of 3VA UL molded case circuit breakers (Page 152).
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3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01