Circuit breaker contact arm assembly having a magnetic carrier

Details Circuit breaker contact arm assembly having a magnetic carrier Circuit breaker contact arm assembly having a magnetic carrier

H - Electricity

01

H

306/74

H01H 77/10 (2006.01)

Patent

CA 1241684

Abstract A blow open contact arm assembly is provided for a molded case circuit breaker. A ferromagnetic carrier is attached to the movable contact arm and is positioned thereabout for creating a magnetic field about the movable contact arm which attracts the contact arm to the open position during severe fault conditions. The molded case housing has reinforced walls to withstand the pressures exerted on the walls of the houses during a blow open operation of the contacts.

489765

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