Siemens 3VA1 100 A Manual page 254

Accessories
4.5 Manual operators
Locking or interlocking using a cylinder lock (type Ronis)
Rotary operators can be locked or interlocked (depending on how the lock holder is installed)
by means of the cylinder lock (type Ronis).
Example of a front mounted rotary operator and a rotary operator with shaft stub:
Locking with cylinder lock (type Ronis):
The cylinder lock (type Ronis) locks the rotary operators in the OFF (O) position.
Mutual interlocking with cylinder lock (type Ronis):
By using the cylinder lock insert for interlocking, it is possible to establish a mutual interlock
between an unlimited number of rotary operators. This requires that the keys of all molded
case circuit breakers locked in the open position are removed from the lock and stored in a
safe place. Only the key of the rotary operator which is in the ON (I) position is left in the
cylinder lock. This key cannot be removed while the rotary operator is in the ON (I) position.
The key can be removed only after the rotary operator has been turned to the OFF (0)
position, the cylinder lock turned to the "locked" position so that the molded case circuit
breaker is interlocked. See also chapter Cylinder locks for implementing interlocks between
multiple 3VA molded case circuit breakers (Page 277).
254
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02