Circuit interruption apparatus providing automatic reduced arc mode and methods of operating the same
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United States of America Patent
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Nov 28, 2017
Grant Date -
Jun 23, 2016
app pub date -
Dec 18, 2014
filing date -
Dec 18, 2014
priority date (Note) -
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Abstract
A circuit interruption device (e.g., a molded case circuit breaker) includes at least one set of contacts, a contact actuator mechanism configured to open the at least one set of contacts and a trip control circuit configured to cause the contact actuator mechanism to open the at least one set of contacts responsive to a condition satisfying a first trip criterion and to apply a second trip criterion (e.g., a lower current level trip threshold) responsive to the opening of the at least one set of contacts. The trip control circuit may be configured to apply the second trip criterion after a succeeding closure of the at least one set of contacts. The trip control circuit may be further configured to return to application of the first trip criterion after lapse of a predetermined interval following the succeeding closure of the at least one set of contacts.
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