Electric circuit breaker arc chute composition

Details Electric circuit breaker arc chute composition Electric circuit breaker arc chute composition

1989-04-03

1990-08-21

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200149A, H01H 3310

Patent

active

049508520

ABSTRACT:
A current limiting circuit breaker having a pair of separable contacts closely spaced for electrodynamic repulsion upon the occurrence of a short circuit overload condition utilizes an arc chute to cool and extinguish the arc that occurs when the contacts become separated. The arc chute contains a plurality of metal arc plates supported by side plates which also assist in cooling and extinguishing the arc. The side plates are formed from a suspension of wollastonite fibers within a melamine resin matrix. The wollastonite provides good mechanical strength and temperature-resistance properties while the melamine provides a continuous source of arc-quenching gaseous molecular compounds.

REFERENCES:
patent: 2005684 (1935-06-01), Sachs
patent: 2551822 (1951-05-01), Bingenheimer et al.
patent: 2917607 (1959-12-01), Sterling
patent: 3407155 (1968-10-01), Casebolt
patent: 4375021 (1983-02-01), Pardini et al.
patent: 4511773 (1985-04-01), Heft et al.
patent: 4733032 (1988-03-01), Pardini
patent: 4748301 (1988-05-01), Goldman et al.

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