Accessories
4.6 Motor operators
3VA molded case circuit breakers with IEC certificate
336
Manual, 03/2019, A5E03603177010-03
4.6.1.2
Closing, opening and resetting the 3VA molded case circuit breaker
Closing and opening in MANUAL mode
The plastic cover is open. The MO310 side mounted motor operator is in MANUAL mode.
●
Close the molded case circuit breaker:
Push the switchstick to the ON (I) position.
The molded case circuit breaker is closed ON (I). The contacts are closed.
●
Open the molded case circuit breaker:
Push the switchstick to the OFF (O) position.
The molded case circuit breaker is open OFF (O). The contacts are open.
Closing and opening in AUTO mode
The plastic cover is closed. The MO310 side mounted motor operator is in AUTO mode. The
3VA molded case circuit breaker can only be closed or opened by means of electrical
signals.
●
Close the 3VA molded case circuit breaker by means of an electrical ON signal at the
terminal block:
The molded case circuit breaker is ON (I). The contacts are closed. The switchstick is in
the ON (I) position.
●
Open the 3VA molded case circuit breaker by means of an electrical OFF signal at the
terminal block:
The molded case circuit breaker is OFF (O). The main contacts are separated. The
switchstick is in the OFF (O) position.