Expansion chambers for circuit breakers
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United States of America Patent
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Aug 2, 2016
Grant Date -
Mar 10, 2016
app pub date -
Sep 10, 2014
filing date -
Sep 10, 2014
priority date (Note) -
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Abstract
Embodiments include a circuit breaker having first and second electrical contacts, the contacts adapted to generate an electrical arc during separation, at least one of the first and second electrical contacts being a movable electrical contact. The circuit breaker also includes an expansion chamber disposed adjacent to at least one of the first and second electrical contacts such that an arcing space is defined by the first electrical contact and the second electrical contact when the first and second electrical contacts are separated. The expansion chamber includes an opening configured to permit air flow between the arcing space and a chamber of the expansion chamber.
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