Circuit breaker accessory tripping apparatus

Details Circuit breaker accessory tripping apparatus Circuit breaker accessory tripping apparatus

1977-01-21

1978-06-27

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

With latch- or trip-reset means

335 20, 335174, H01H 920

Patent

active

040978311

ABSTRACT:
An accessory apparatus package for electric circuit breakers includes a pivotal lever for latching a spring powered trip slide in a reset position. Either of two shunt trip solenoids acts on this lever to unlatch the slide, which springs to an actuated position, initiating tripping of the breaker. A UVR solenoid can also act on this lever to unlatch the slide. A powerful reset spring, controlled by the breaker operating mechanism, discharges as the breaker trips to return the slide to its reset position and, in the process, causes the lever and the solenoid plungers to be reset. All parts are operatively mounted by a common support affixed to the breaker.

REFERENCES:
patent: 3919674 (1975-11-01), Acampora et al.
patent: 4001742 (1977-01-01), Jencks et al.
patent: 4061993 (1977-12-01), Hennemann

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