Remotely-operated circuit breaker

Details Remotely-operated circuit breaker Remotely-operated circuit breaker

1989-10-06

1991-10-01

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 20, H01H 8300

Patent

active

050537350

ABSTRACT:
A remotely operated circuit breaker comprises a handle which is selectively positioned at one of three operating positions: a handle off position into which the handle is manually positioned to forcibly open the electrical contacts in the circuit breaker; a handle auto position into which the handle is positioned manually so that the electrical contacts are driven to normally open and close by a control mechanism which in turn is controlled by an electromagnetic driving unit response to a remote control voltage applied thereto; and a trip position into which the handle is automatically positioned by the control mechanism and a forcible overcurrent protecting unit to and the electrical contacts are opened rapidly when an overcurrent as well as a short-circuit current flows through the electrical contacts.

REFERENCES:
patent: Re32882 (1989-03-01), Yokoyama et al.
patent: 4449055 (1984-05-01), Greer et al.
patent: 4470028 (1984-09-01), Vayre et al.
patent: 4623859 (1986-11-01), Erickson et al.
patent: 4625190 (1986-11-01), Loafer 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: 4990875 (1991-02-01), Lemarquand

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