Repulsion type circuit breaker control device

Details Repulsion type circuit breaker control device Repulsion type circuit breaker control device

1991-10-17

1992-11-17

Broome, Harold

Electricity: circuit makers and breakers

Liquid contact

Time delay

335195, H01H 944, H01H 5302

Patent

active

051645602

ABSTRACT:
A repulsion type circuit breaker movable contact device comprising a first movable contact, an opening/closing mechanism which drives the first movable contact for opening and closing, a second movable contact for contacting the first movable contact, the second movable contact being freely pivotable and adapted to receive an electromagnetic repulsion force from said first movable contact, and a contact spring comprising a twisted coil spring disposed with its twisting fulcrum displaced from the rotational pivot of the second movable contact, the contact spring urging the second movable contact into contact with the first movable contact, whereby upon flow of a predetermined amount of electric current through the first and second movable contacts, the electromagnetic repulsion force moves the second movable contact apart from the first movable contact.

REFERENCES:
patent: 4539538 (1985-09-01), Flick et al.

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