Electric circuit breaker
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United States of America Patent
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Oct 15, 2013
Grant Date -
Sep 10, 2009
app pub date -
May 18, 2009
filing date -
Apr 17, 2003
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An electric circuit breaker apparatus protects an electrical circuit against excessive current loads. A first remotely programmable circuit breaker trip device receives an external command with a programmable current threshold, detects a current level in the electrical circuit, and may cause a break in the electrical circuit depending on the detected current level in accordance with a first current duration associated with the stored programmable current threshold. A second electrical circuit breaker trip device is arranged to cause a break in the electrical circuit in accordance with a second current duration different, e.g., shorter, than the first current duration if a current flowing in the electrical circuit exceeds a predetermined rated current for more than the second current duration.
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