Molded case circuit breaker cover insert

Details Molded case circuit breaker cover insert Molded case circuit breaker cover insert

1990-08-27

1991-10-22

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335202, H01H 6702

Patent

active

050599313

ABSTRACT:
A molded case circuit breaker of the type using electrodynamic repulsion to separate the circuit breaker contacts under intense overcurrent conditions also includes an arc chute arrangement for cooling and quenching the arc that occurs during such contact separation. A plastic insert added to the interior of the circuit breaker cover multi-functionally retains the arc chute within the circuit breaker case while providing clearance for the circuit breaker operating handle shutter.

REFERENCES:
patent: 4011425 (1977-03-01), Gryctko
patent: 4107497 (1978-08-01), Jencks et al.
patent: 4266209 (1981-05-01), DiMarco et al.
patent: 4650946 (1987-03-01), Maier et al.
patent: 4945327 (1990-07-01), Doughty et al.
patent: 4959514 (1990-09-01), Robarge et al.

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