Bell alarm and lock-out for high ampere-rated circuit breakers

Details Bell alarm and lock-out for high ampere-rated circuit breakers Bell alarm and lock-out for high ampere-rated circuit breakers

1994-05-25

1996-03-26

Walczak, David J.

Electricity: circuit makers and breakers

Toggle mechanisms

200308, H01H 2300

Patent

active

055022863

ABSTRACT:
A combined bell alarm and lock-out accessory is connected with the electronic trip unit that controls a high ampere rated circuit breaker. The accessory interacts with the circuit breaker operating mechanism to activate the bell alarm upon circuit interruption and to prevent the closing of the circuit breaker contacts until the accessory is manually reset.

REFERENCES:
patent: 3214537 (1965-10-01), Krieger
patent: 3217125 (1965-11-01), Brackett
patent: 3693122 (1972-09-01), Willard
patent: 3760307 (1973-09-01), Patel
patent: 4672501 (1987-06-01), Bilac et al.
patent: 4870531 (1989-09-01), Danek
patent: 4939490 (1990-07-01), Bernier et al.
patent: 5258732 (1993-11-01), Marquardt
Castonguay et al U.S. Patent Application SN: 08/202,140 filed Feb. 25, 1994 entitled "Operating Mechanism for High Ampere-Rated Circuit Breakers". (Docket: 41PR-7116).
Santos et al U.S. Patent Application SN: filed entitled "Digital Circuit Interrupter with Multiple Accessory Function" (Docket: 41PR-7170).

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