Siemens 3VA1 100 A Manual page 242

Accessories
4.5 Manual operators
Switching position indicator of front mounted rotary operator
①
②
③
Front mounted rotary operator with door interlock
The front mounted rotary operator with door interlock projects through the cubicle door. This
arrangement ensures that the molded case circuit breaker can be switched on only when the
control cabinet 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) so that maintenance can be carried out, for
example.
242
ON: Breaker closed
TRIP: Breaker tripped
Mounting position
④
OFF: Breaker open
⑤
RESET: Reset following a trip
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02