Circuit breaker for detecting overload

Details Circuit breaker for detecting overload Circuit breaker for detecting overload

2006-06-20

2006-06-20

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S042000

Reexamination Certificate

active

07064944

ABSTRACT:
A circuit breaker for detecting overload is disclosed. The circuit breaker detects an overload condition electrically without using bimetal. The circuit breaker for detecting overload includes an arc fault detector and a discharge controller. If arc fault occurs, the discharge controller discharges voltage charged in a capacitor. Therefore, the circuit breaker does not trip the circuit when arc fault occurs although high current flows on a conductor. Further, the circuit breaker for detecting overload includes a charging time constant controller so that charging time is varied according to current flowing on the conductor.

REFERENCES:
patent: 3962606 (1976-06-01), Burns et al.
patent: 5307230 (1994-04-01), MacKenzie
patent: 6577478 (2003-06-01), Kim et al.
patent: 6590754 (2003-07-01), Macbeth
patent: 6782329 (2004-08-01), Scott

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