H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/56
H01H 73/36 (2006.01) H01H 77/10 (2006.01)
Patent
CA 1064078
CURRENT LIMITING CIRCUIT BREAKER ABSTRACT OF THE DISCLOSURE A circuit breaker includes a slotted magnetic device having a plurality of spaced slotted conductive plates and a moving contact arm positioned within the slot when the circuit breaker is in a closed circuit position so that current flowing through the contact arm has a component in a vertical direction with respect to the slot. An over- current condition through the circuit breaker causes mag- netic flux to be generated within the slotted magnetic device which develops a force to drive the moving contact arm from the front to the rear of the slot in a direction generally parallel to the bottom of the slot, thereby actua- ting the circuit breaker from a closed circuit position to an open circuit position. The circuit breaker also includes an arc-extinguishing device including a plurality of apertured conductive plates. The moving contact arm includes a probe member extending into the apertures of the plates when the circuit breaker is in a closed circuit position.
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