Anti-rebound latch for current limiting switches

Details Anti-rebound latch for current limiting switches Anti-rebound latch for current limiting switches

1977-08-18

1979-03-13

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 16, H01H 7700

Patent

active

041445139

ABSTRACT:
A multipole circuit breaker is constructed with a single rod pivotally mounting all of the movable contact arms to a common one piece molded insulating carrier. Individual torsion springs engage each of the contact arms to provide contact pressure when the circuit breaker is closed. The construction of the contact arms and carrier are such that under severe overcurrent conditions electrodynamic blowoff forces acting on the contact arms may bring about contact separation that is substantially as great as the contact separation that takes place when the circuit breaker is opened normally by its contact operating mechanism. An individual anti-rebound pin for each pole engages the contact arm of the associated pole to prevent rebound reclosing after electrodynamic opening. A camming means on the carrier releases the anti-rebound latches to permit manual closing of the contacts.

REFERENCES:
patent: 3518587 (1970-06-01), Huggins
patent: 3815059 (1974-06-01), Spoelman

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