Accessories
4.6 Motor operators
3VA molded case circuit breakers with IEC certificate
Manual, 03/2019, A5E03603177010-03
337
Resetting the molded case circuit breaker
The method by which the molded case circuit breaker is reset by the MO310 side mounted
motor operator depends on the selected reset mode.
The reset mode can be set. After the molded case circuit breaker has tripped, the selected
reset mode determines the response of the motor operator in the TRIP position.
Response of MO310 side mounted motor operator to tripping of the molded case circuit
breaker, depending on the selected reset mode:
Connection diagram for control of the MO310 motor operator
The MO310 motor operator is edge-controlled, i.e. it reacts only to the positive edge of an
ON or OFF command at the relevant terminals 3 and 4. In this case, the OFF signal is
dominant, i.e. the motor operator will be switched off in response to an OFF edge even if an
ON signal is applied.
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