Siemens SENTRON 3VA27 - Page 119

Interlocks in the withdrawable circuit breaker frame



① Locking device against movement of the withdrawable CB, Ronis lock, in the breaker position DISCONNECT, TEST, or
CONNECT
② Locking mechanism to prevent movement of the withdrawable CB with padlock, in the breaker position DISCONNECT,
TEST, or CONNECT
③ Locking device in addition to ① or ②, which permits only locking in breaker position DISCONNECT with the cylinder
lock (see ①) or padlock (see ②)
Locking device to prevent movement of the withdrawable circuit breaker with cylinder
locks
With the cylinder locks on the guide frame, the circuit breaker is secured against racking
in the guide frame. The positions CONNECT, TEST, and DISCONNECT can be locked and the
circuit breaker can then no longer be racked in or out.
If multiple guide frames are equipped with cylinder locks, Ronis locks with di󹪜erent lock
numbers are used. This means each guide frame has its own key.
Locking mechanism to prevent movement of the withdrawable CB
With the locking device for padlocking on the guide frame, the circuit breaker is secured
against racking in the guide frame. The positions CONNECT, TEST and DISCONNECT can be
locked.
Accessories
3.5External accessories
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
118 Equipment Manual, 10/2023, L1V30499596002-03