Remote-controlled circuit breaker

Details Remote-controlled circuit breaker Remote-controlled circuit breaker

1989-10-03

1992-01-07

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 20, H01H 7500

Patent

active

050795295

ABSTRACT:
A remote-controlled circuit breaker has an operation mechanism unit (300), for selecting one of an off state and a remote-controllable state of the circuit breaker, and a movable contact (11, 12) which makes/breaks contact with a fixed contact (9.16) in connection with a motion of an electromagnetic unit (200) only in the remote-controllable state; and the movable contact breaks contact with the fixed contact irrespective of the motion of the electromagnetic unit at the time when an overcurrent tripping unit (400) is operated by a fault. A control lever (63) for moving the movable contact into and out of contact with the fixed contact has an elastic element (63A) which strengthens the engagement of a latch mechanism in the overcurrent tripping unit during an off-time of the electromagnetic unit.

REFERENCES:
patent: Re32882 (1989-03-01), Yokoyama et al.
patent: 4529951 (1985-07-01), Youichi et al.
patent: 4532486 (1985-07-01), Terrier
patent: 4623859 (1986-11-01), Erickson et al.
patent: 4631507 (1986-12-01), Guery et al.
patent: 4636760 (1987-01-01), Lee
patent: 4725799 (1988-02-01), Bratkowski et al.
patent: 4855698 (1989-08-01), Cohen et al.
patent: 4879535 (1989-11-01), Mori et al.

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