Auxiliary operator for circuit interrupting apparatus

Details Auxiliary operator for circuit interrupting apparatus Auxiliary operator for circuit interrupting apparatus

H - Electricity

01

H

H01H 9/24 (2006.01) H01H 9/22 (2006.01) H01H 71/12 (2006.01)

Patent

CA 2042850

Abstract of the Disclosure A removable control unit of a motor control center has an auxiliary operator handle linked to a molded case circuit breaker handle for control of the circuit breaker externally of the motor control center cabinet. An interlock slide bar is driven by the auxiliary handle to an extended position to block removal of the unit with the circuit breaker in the ON condition, and follows the handle by gravitational force to a withdrawn position upon movement of the handle to an OFF condition of the circuit breaker, the slide bar abutting a fixed stop prior to the handle reaching the OFF condition to separate the handle from the slide bar in the OFF condition. A spring carried on the interlock slide bar is engaged by the handle to effect driving engagement, compression of the spring occurring only as the handle is nearly in the ON condition.

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