Circuit breaker for detecting overload
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United States of America Patent
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-
Jun 20, 2006
Grant Date -
Dec 18, 2003
app pub date -
Apr 8, 2003
filing date -
Apr 9, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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