Insulating barriers for circuit breaker bus bars and a ground fault circuit breaker incorporating same
AssigneeWestinghouse Electric Corp.
InventorsMichael J. Whipple, Joseph P. Fello
Life of this patent
Estimating the term…
Abstract
Insulating barriers for flat, confronting C-shaped bus bars with facing, depending end portions are integrally formed with a pair of confronting C-shaped insulating members conforming to the shape of the bus bars and joined by a pair of projections extending between and electrically insulating the facing, depending end portions from each other. Preferably, the insulating barrier is formed with flat linear sections joining the confronting C-shaped members which are then folded to form the projections. The C-shaped insulating members have edge extensions covering the edges of the bus bars. Grippers formed integrally with the edge extensions snap under the bus bars to secure the insulating members in place.
Claims12
An insulating barrier for a pair of confronting flat C-shaped bus bars with facing, depending end portions extending substantially perpendicularly to the bus bar said insulating barrier comprising:
- a pair of confronting C-shaped insulating members conforming to the shape of said flat C-shaped bus bars and joined by a pair of projections which extend between and electrically insulate said facing, depending end portions.
In combination, a ground fault circuit breaker having a circuit breaker mechanism and a ground fault detector including at least one toroidal ground fault sensing coil for sensing ground faults and tripping said circuit breaker mechanism in response thereto, and further including a pair of confronting C-shaped flat bus bars with facing, depending end portions extending substantially perpendicularly to the bus bar, at least one of which from each bus bar extends through said at least one toroidal ground fault sensing coil;
- and
- an insulating barrier comprising a pair of confronting C-shaped insulating members conforming to the shape of said flat C-shaped bus bars and joined by a pair of projections which extend between and electrical insulate said facing, depending end portions.
Dependencies are inferred from the claim text.