Molded case circuit breaker cover insert

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

1990-10-29

1991-06-25

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

With housing or support means

2003023, 200339, H01H 902

Patent

active

050270958

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 cover 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. A resilient pad on the top surface of the cover insert receives the circuit breaker operating handle skirt upon contact separation and dampens the energy imparted to the operating handle and to the circuit breaker cover.

REFERENCES:
patent: 4169972 (1979-10-01), Black
patent: 4221941 (1980-09-01), Genovese
patent: 4626811 (1986-12-01), McKee et al.
patent: 4861950 (1989-08-01), Yanai et al.
patent: 4884048 (1989-11-01), Castonguay et al.
patent: 4945327 (1990-07-01), Doughty et al.

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