Contactor and/or circuit breaker

Details Contactor and/or circuit breaker Contactor and/or circuit breaker

1988-11-17

1990-06-05

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335 8, H01H 6702

Patent

active

049317571

ABSTRACT:
A contactor which includes a contact bridge holder for opening and closing a first plurality of contacts of an electric circuit, a second plurality of additional contacts for each electrical phase and a coil connection of an associated magnetic system, respectively; the magnetic system including thermo trippers and magnetic trippers for selectively operating the first plurality of contacts, three actuation members each mounted for pivoting movement, the first of the actuation members being connected to a slider which is in turn connected to the second plurality of contacts, the second actuation member being operative by the magnetic tripper, the third actuation member being operative by the thermal tripper, the first and second actuation members having end portions which are normally in engagement when the trippers are not actuated and the second plurality of contacts are open, and the normally engaging end portions of the first and second actuating members are moved out of engagement upon the operation of either of the trippers resulting in operation of the slider and the opening of the second plurality of contacts.

REFERENCES:
patent: 4531172 (1985-07-01), Mertz
patent: 4644308 (1987-02-01), Guery et al.
patent: 4688011 (1987-08-01), Lemmer et al.
patent: 4713636 (1987-12-01), Lemmer et al.

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