Protective switching device

Details Protective switching device Protective switching device

1995-02-24

1997-01-14

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335202, H01H 6702

Patent

active

055943993

ABSTRACT:
A protective switching device equipped with power poles, for which mobile contacts are supported on a contact support, a protection assembly with magnetic and/or temperature tripping capable of detecting overloads or overcurrents on each pole current path and a lock operated by a manual control knob. The lock includes a mechanism to control direct opening of power contacts of a circuit breaker or similar device in a manual control, or opening of an auxiliary contact that interrupts the current in the coil in the control electromagnet of a contactor-circuit breaker or similar device.

REFERENCES:
patent: 5218332 (1993-06-01), Blanchard et al.
patent: 5296826 (1994-05-01), Hart et al.

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