Multipole circuit breaker with contact arms individually...

Details Multipole circuit breaker with contact arms individually... Multipole circuit breaker with contact arms individually...

H - Electricity

01

H

306/330

H01H 73/00 (2006.01) H01H 77/10 (2006.01)

Patent

CA 1073021

D-502(MCO) ABSTRACT OF THE DISCLOSURE A multipole circuit breaker is constructed with a single rod pivotally mounting all of the movable contact arms to a common one piece molded insulating carrier. Individual torsion springs engage each of the contact arms to provide contact pressure when the circuit breaker is closed. The construction of the contact arms and carrier are such that under severe overcurrent conditions electrodynamic blowoff forces acting on the contact arms may bring about contact separation that is substantially as great as the contact separation that takes place when the circuit breaker is opened normally by its contact operating mechanism.

271505

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