Circuit breaker arc venting screen

Details Circuit breaker arc venting screen Circuit breaker arc venting screen

1976-07-15

1978-02-21

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200306, H01H 3308

Patent

active

040754464

ABSTRACT:
A molded case circuit breaker comprising a case divided longitudinally into two approximate half cases. Each case defines an arcing chamber. Further, each half case has a side wall, an end wall, and a top wall. The end walls of each half case define an opening through which the arc gases are vented. The top walls of each half case define an inverted U-shaped cavity. A V-shaped screen has one leg thereof placed against the end walls to restrict the opening. The other leg of the V-shaped screen extends into the U-shaped cavity, but is spaced from the wall defining the U-shaped cavity. The V-shaped screen has legs which are spaced apart to provide a space through which the arc gases may pass. The circuit breaker also includes a stationary contact surrounded on all sides but one by an arc runner which is keyed to a supporting conductor. Further, two or more circuit breaker poles may be interconnected at their handle links with only one handle link extending outwardly of deep wells formed by portions of the half cases for manual operation of the multi-pole circuit breaker formed thereby.

REFERENCES:
patent: 2839641 (1958-06-01), Edmunds
patent: 3071666 (1963-01-01), Ellsworth et al.
patent: 3355685 (1967-11-01), Leonard
patent: 3602852 (1971-08-01), Brackett, Sr. et al.
patent: 3842376 (1974-10-01), Mune

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