Circuit breaker bell alarm and lockout accessory apparatus

Details Circuit breaker bell alarm and lockout accessory apparatus Circuit breaker bell alarm and lockout accessory apparatus

1978-10-02

1980-07-08

Braun, Fred L.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

200308, 335170, H01H 7312, H01H 7500, H01H 7700

Patent

active

042119898

ABSTRACT:
An actuating arm, coupled with the breaker contacts, is pivotally mounted to an accessory latch normally constrained from pivotal movement by a latch lever. Upon automatic tripping of the breaker, the actuating arm is swung about its pivotal mounting to a breaker lockout position, incidentally releasing an operating lever for movement from a de-actuating position to a bell alarm switch actuating position. Unlatching of the latch by the latch lever allows the actuating arm to swing about the latch pivot to a defeat position, removing the breaker lockout and returning the switch operating lever to its de-actuating position. The accessory latch is relatched, via the actuating arm, coincidentally with closure of the breaker contacts.

REFERENCES:
patent: 2460758 (1949-02-01), Lawson
patent: 3070682 (1962-12-01), Yarrick et al.
patent: 3806686 (1974-04-01), Gaskill
patent: 3955162 (1976-05-01), Nicol
patent: 4001739 (1977-01-01), Powell et al.

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