Industrial-rated circuit breaker having universal application

Details Industrial-rated circuit breaker having universal application Industrial-rated circuit breaker having universal application

1993-07-02

1994-11-01

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Tripping means

335167, H01H 900

Patent

active

053610520

ABSTRACT:
A molded case circuit breaker enclosure and operating components are provided with additional features to enable compliance with a variety of international electrical requirements for sales in the world market. The circuit breaker operating handle is prevented from returning to the OFF position upon contact welding as one example. Another modification includes a reinforcement and rejection pin used with the enclosure case. A further modification includes a shield used with the movable contact arm to prevent the arc gas contaminants from contacting the circuit breaker operating springs.

REFERENCES:
patent: 3605052 (1971-09-01), Dimond
patent: 4210887 (1980-07-01), Matsko et al.
patent: 4546224 (1985-10-01), Mostosi
patent: 4589052 (1986-05-01), Dougherty
patent: 4649455 (1987-03-01), Scott
patent: 4754247 (1988-06-01), Raymont et al.
patent: 5004878 (1991-04-01), Seymour et al.

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