Contactor-circuit breaker

Details Contactor-circuit breaker Contactor-circuit breaker

1998-01-09

1999-04-13

Elms, Richard T.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 42, 361 93, 361115, H02H 300

Patent

active

058943951

ABSTRACT:
Contactor-circuit breaker housing firstly power poles and an electromagnet serving to activate the moving contacts in contactor mode and including a fixed magnetic circuit, a moving magnetic circuit and a coil whose electric supply is controlled by a switch, and secondly at least one current sensor serving to control a releasing electromagnet. The activating electromagnet and the releasing electromagnet are constituted by a single electromagnet whose moving magnetic circuit is a pivoting pallet linked mechanically to the contact-holders of the poles and having a weak moment of inertia. An electric unit is provided for the rapid reduction of the magnetic flux, triggered by an electronic control device associated with the current sensor.

REFERENCES:
patent: 3963967 (1976-06-01), Gurwicz et al.
patent: 4272687 (1981-06-01), Borkan
patent: 4274122 (1981-06-01), Hansen et al.
patent: 5546268 (1996-08-01), Hurley et al.
D.W. Stafford, et al., "Zener Diode Sharing", IBM Technical Disclosure Bulletin, vol. 19 No. 5, Oct. 1976, p. 1745.

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