Closing delay arrangement for current limiting circuit breaker c

Details Closing delay arrangement for current limiting circuit breaker c Closing delay arrangement for current limiting circuit breaker c

1986-01-21

1987-09-22

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3318

Patent

active

046956905

ABSTRACT:
A control arrangement to prevent or delay the closing of current limiting circuit breaker contacts after opening by repulsion due to a short circuit is disclosed. A first contact arm and a second contact arm are operatively associated with a ratchet or pawl for locking the second contact arm. A release lever operatable by the first contact arm and the breaker operating mechanism releases the ratchet after a delay period greater than the duration of the short circuit or the operating time of the breaker operating mechanism.

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