Current limiting circuit breaker

Details Current limiting circuit breaker Current limiting circuit breaker

1975-09-23

1977-11-01

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335195, 335201, H01H 7710

Patent

active

040567982

ABSTRACT:
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 overcurrent condition through the circuit breaker causes magnetic 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 actuating 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.

REFERENCES:
patent: 2167499 (1939-07-01), Dickinson
patent: 2240623 (1941-05-01), Lindstrom
patent: 3506799 (1970-04-01), Ellsworth et al.
patent: 3815059 (1974-06-01), Spoelman

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