Electric circuit breaker

Details Electric circuit breaker Electric circuit breaker

1988-07-29

1990-04-03

Tolin, Gerald P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 38, H01H 7510

Patent

active

049144090

ABSTRACT:
A mounting frame is provided for components of a circuit breaker. The frame is of metal and is designed so that it carries current and is not merely for supporting the components. The frame has a terminal portion, a field generating portion, pole piece defining portions, a reverse arc runner, a support post for a bi-metal strip, a latching projection for an armature, guide surfaces for the armature and a pivot pin for an operating handle. The invention further provides a circuit breaker which utilizes the frame and to a circuit breaker which uses a coil of varying resistance, in comparison with the constant resistance of a path between a terminal and a bi-metal strip, to vary the magnetic tripping characteristic of breaker.

REFERENCES:
patent: 2958749 (1960-11-01), Brackett
patent: 3278708 (1966-10-01), Casey et al.

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