Contact arm mechanism for circuit breaker

Details Contact arm mechanism for circuit breaker Contact arm mechanism for circuit breaker

H - Electricity

01

H

H01H 73/02 (2006.01) H01H 3/38 (2006.01) H01H 3/46 (2006.01) H01H 71/10 (2006.01)

Patent

CA 2639606

A mechanism for a circuit breaker contact arm that allows current limiting by reducing the opening time is disclosed. A contact arm is coupled to a contact arm mechanism that includes a carrier coupled to a first pair of linkages. A second pair of linkages is coupled to the first pair of linkages. A second carrier coupled to the second pair of linkages attaches to the contact arm mechanism to a main circuit breaker mechanism through a lay shaft assembly. Upon the occurrence of an undesired electrical condition, the contact arm mechanism moves from a locked to an open position allowing the contact arm to blow open.

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