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Accessories
4.5 Manual operators
Front mounted rotary operator with door interlock
The front mounted rotary operator with door interlock projects through the panel door. This
arrangement ensures that the molded case circuit breaker can be switched on only when the
panel door is closed. The door is locked automatically when the front mounted rotary
operator is turned to position ON (I).
Overriding the door interlock
The door interlock can be overridden by a deliberate action. This means that the door can be
opened with the operator in position ON (I), e.g. so that maintenance can be carried out.
①
②
③
Procedure
1. Press the door interlocking pin with a sharp object.
2. Hold the pin down while the door is opened.
Switch on the circuit breaker with the panel door open
The door contact must be operated manually in order to switch on the molded case circuit
breaker with the panel door open. The handle can then be moved to the ON (I) position.
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Door position switch
Door interlock
Defeat function
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
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