Circuit breaker including improved handle indication of contact

Details Circuit breaker including improved handle indication of contact Circuit breaker including improved handle indication of contact

1990-09-27

1992-06-09

Luebke, Renee S.

Electricity: circuit makers and breakers

Toggle mechanisms

H01H 506

Patent

active

051209217

ABSTRACT:
A circuit breaker including a contact operating mechanism configured to prevent the switch handle of the circuit breaker from being placed in an OFF position when the contacts are not separable. In addition to the switch handle, the mechanism is operable with a tripping circuit which actuates the mechanism to urge the contacts apart when the current flowing through the circuit breaker exceeds the preset limits of the circuit breaker. When the contacts are not separable and the tripping circuit actuates the mechanism, the operating handle is restricted from being placed in the OFF position, thereby avoiding the possibility of indicating an incorrect position of the contacts.

REFERENCES:
patent: 4165453 (1979-08-01), Hennemann
patent: 4368444 (1983-01-01), Preuss et al.
patent: 4546224 (1985-10-01), Mostosi
patent: 4829147 (1989-05-01), Schiefen et al.
patent: 4951019 (1990-08-01), Gula

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