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Opening, closing and resetting the 3VA molded case circuit breaker

Opening and closing

  • To close the 3VA molded case circuit breaker:
    Turn the manual operator to the ON (I) position.

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  • To open the 3VA molded case circuit breaker:
    Turn the manual operator to the OFF (O) position.

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Resetting the manual operator after the molded case circuit breaker has tripped

When the molded case circuit breaker trips, the manual operator moves automatically from the ON (I) to the TRIP position.

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The molded case circuit breaker remains in the tripped state until the manual operator is reset:

  1. Clear the fault which has caused the molded case circuit breaker to trip.

  2. Turn the manual operator counter-clockwise to the limit stop (RESET position, just beyond OFF (O)).
    The manual operator remains in the OFF (O) position.

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  3. Turn the manual operator to the ON (I) position.

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The molded case circuit breaker is closed again.