Arc fault circuit breaker apparatus and related methods
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United States of America Patent
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Jul 9, 2002
Grant Date -
N/A
app pub date -
Nov 7, 2000
filing date -
Nov 7, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A circuit for detecting arc faults and over-currents includes two overcurrent detection circuits and a ground fault circuit referenced to a single ground and configured to receive power from a single power supply. Each over-current detection circuit includes a Hall effect current sensor configured to determine a current in a corresponding pole conductor. A method for detecting arc faults and over-currents includes determining a current in a pole conductor using a sensor not in contact with the pole conductor. This circuit and method allow a two-pole breaker circuit to be configured in a form similar to a one-pole circuit and eliminate tripping caused by spurious signals from bimetal sensors.
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