Electrical circuit breaker protection device

Details Electrical circuit breaker protection device Electrical circuit breaker protection device

H - Electricity

01

H

306/284

H01H 71/24 (2006.01) H01H 71/02 (2006.01) H01H 83/02 (2006.01) H01H 83/22 (2006.01) H02H 3/33 (2006.01)

Patent

CA 2036032

DC-87 ABSTRACT OF THE DISCLOSURE An equipment protection device for a multi pole circuit breaker includes a trip coil, having a plunger with a tang, in an adapter housing that is attached to the breaker housing for tripping the breaker load contacts by means of the tang. The tang extends through an aperture in the side of the breaker. The trip coil is controlled by a toroid that is in a remote housing, displaced from the breaker housing and which includes a sensing winding on the magnetic core of the toroid. A ground fault carrying conductor is passed through the toroid window and connects the neutral of the breaker panel to an earth ground. A test button on the adapter housing completes a circuit for supplying current to a test winding on the toroid to simulate a ground fault condition. The trip coil has two independent windings that are individually connected to the load contacts of the breaker such that either winding can operate the trip coil.

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