Circuit breaker

Details Circuit breaker Circuit breaker

H - Electricity

01

H

306/60

H01H 77/02 (2006.01) H01H 71/52 (2006.01) H01H 9/02 (2006.01) H01H 9/16 (2006.01) H01H 71/02 (2006.01) H01H 71/04 (2006.01) H01H 71/40 (2006.01) H01H 73/18 (2006.01)

Patent

CA 1244510

-30- ABSTRACT An automatic electric side-by-side two-pole circuit breaker having an insulating casing formed from the complementary association of a base casing, an intermediate casing and a cover which provide a pair of mechanism receiving compartments in side-by-side association. Each compartment carries a pivotally supported operating handle which extends partially outward from the casing for external manual operation, a line terminal, a load terminal electrically connected to said line terminal, a stationary contact intermediate said line terminal and said load terminal and a movable blade which carries a movable contact on one end and has its opposite end connected to the handle. A releasably latched generally thin trip lever is pivotally mounted within the compartment and is releasable from its latched position to a tripped position to effect separation of the contacts. The trip lever includes an upstanding leg which is engaged by a protuberance on the handle for resetting the trip lever. The handle overlaps the trip lever as does the movable contact blade which has an extending top segment received in a recess of the handle for operation of the movable blade by the handle. A spring is connected between the generally a-shaped blade and the trip lever for snap action of the blade. The trip lever is latched by an armature which is operably associated with a generally U-shaped yoke that is connected to a bimetal which is connected to the load terminal. A trip indicating member is biased by a spring to a first position and moved to a second position in response to the movement of the trip lever to its tripped position thereby indicating through a lens provided on the casing of the breaker that the circuit breaker is in a tripped condition. One end of a flexible electrical connector -31- is welded to a first end of the yoke and an ear is provided at the opposite end of the yoke to retain the connector along the back wall of the yoke with the opposite end of the flexible connector welded within trough along an offset portion of the movable contact blade. Each pole of the circuit breaker is substantially 3/8 inches wide with the overall width of the circuit breaker approximately 3/4 inches.

490492

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