Circuit interrupter with improved electro-mechanical undervoltag

Details Circuit interrupter with improved electro-mechanical undervoltag Circuit interrupter with improved electro-mechanical undervoltag

1982-12-17

1984-12-18

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335166, 335176, H01H 8300

Patent

active

044892950

ABSTRACT:
A multiple pole circuit breaker comprises stationary and movable contacts in each pole, with a cross bar extending between the poles and causing concerted movement of the movable contacts. An operating mechanism effects movement of the movable contacts between open and closed positions, and a resettable undervoltage release mechanism cooperates with the operating mechanism to effect movement of the movable contacts. The undervoltage release mechanism operates to move the movable contacts from the closed to open position upon the occurrence of voltage levels less than a predetermined value, with the undervoltage release mechanism being reset by physical contact with the cross bar as the cross bar moves with the movable contacts from the closed to open positions.

REFERENCES:
patent: 2280899 (1942-04-01), Dyer et al.
patent: 3293577 (1966-12-01), Kiesel et al.
patent: 3585329 (1971-06-01), Maier et al.
patent: 3590325 (1971-06-01), McMillen et al.
patent: 3775713 (1973-11-01), Walker et al.
patent: 3792380 (1974-02-01), Murotani et al.
Westinghouse Technical Data Sheet 29-120, p. 54, dated 4/80.
Advertising Brochure for SCB-11 Systems Circuit Breaker, p. 12, dated 12/73.

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