Accessories
3.4 Rotary operators
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Manual, 10/2018, L1V30499596002-01
115
The door interlock of the door mounted rotary operator locks the door as soon as the door
mounted rotary operator is turned to position ON.
The door interlock can be overridden by a deliberate action. This is done by pressing the
door interlocking pin on the left side of the masking plate with a sharp object (e.g. a narrow
screwdriver). This means that the door can be opened with the operator in position ON so
that maintenance can be carried out, for example.
The circuit breaker can be locked via the door mounted rotary operator in three different
ways.
1. On the handle: If the circuit breaker on the handle is locked with padlocks (up to three, 5-
7 mm diameter), the door cannot be opened when the circuit breaker is open either.
2. On the rotary operator: For locking the circuit breaker while the panel door is open, e.g.
for maintenance work, padlocks (up to three, 5-7 mm diameter) can also be used on the
operator itself.
3. With cylinder lock on the rotary operator: The circuit breaker can also be prevented from
closing with a key and an optionally installable cylinder lock.
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