Insulated light weight metallic crossbar in polyphase circuit br

Details Insulated light weight metallic crossbar in polyphase circuit br Insulated light weight metallic crossbar in polyphase circuit br

1988-09-08

1989-09-12

Scott, J. R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200 50C, 335 8, H01H 930

Patent

active

048662259

ABSTRACT:
A crossbar spanning the poles of a multiple pole circuit breaker. The crossbar is formed from a structural member such as beam having an I-shaped cross-section, wherein an insulating material such as plastic is molded to the beam. The shape of the structural member is such that it provides a high strength to weight ratio. The plastic is molded such that it includes means for inhibiting arcing between the poles of the circuit breaker.

REFERENCES:
patent: 3073927 (1963-01-01), Hill et al.
patent: 3422381 (1969-01-01), Toth
patent: 3946346 (1976-03-01), Oster et al.
patent: 4137437 (1979-01-01), Maier et al.
patent: 4227161 (1980-10-01), Yamat et al.
patent: 4524339 (1985-06-01), Chabot
patent: 4580021 (1986-04-01), Fujikake
patent: 4642431 (1987-02-01), Tedesco et al.

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