Electrical switching device

Details Electrical switching device Electrical switching device

H - Electricity

01

H

306/282

H01H 33/42 (2006.01) H01H 3/30 (2006.01)

Patent

CA 1304436

ABSTRACT OF THE DISCLOSURE: An electric switching device comprising a contact arm which is fixed on a shaft rotatably mounted in a fixed contact block and being turnable between a closed position and an open position under the influence of a torsion rod spring, one end of which being fixedly connected to the contact arm or the shaft and the other end of which being fixedly connected to a percussion hammer, which cooperates with a latching device which is adapted, in the closed position, to arrest the torsion rod spring in tensioned condition, while the contact arm is pressed against a fixed counter contact for closing a current path through the contact arm. The percussion hammer is adapted, upon opening of the switching device after releasing of the latching device, to strike against a projection fixedly arranged on the contact arm or the shaft to bring about a rapid contact opening.

552022

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