Self-extinguishing circuit breaker comprising gas...

Details Self-extinguishing circuit breaker comprising gas... Self-extinguishing circuit breaker comprising gas...

H - Electricity

01

H

306/229

H01H 33/91 (2006.01)

Patent

CA 1126315

ABSTRACT OF THE DISCLOSURE A hollow cylindrical member includes a compression chamber and a reservoir patitioned by a circumferential step disposed on its inner wall surface and filled with an arc-extinguishing fluid. A piston loaded with a spring forms stationary contact and is slidably fitted into the compression chamber while the reservoir is connected to the exterior of the cylindrical member through a flared hole in an electrically insulating nozzle. A movable contact loosely extends through the nozzle to engage separably the piston. The stationary contact may be disposed in the reservoir while the piston serves as an arc contact. The spring may be replaced by a tulip-shaped member on the piston forced into a recess on the free end of the movable contact and leaving it upon the piston engaging the step.

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