MECHANICAL FLEXIBLE THERMAL TRIP UNIT FOR MINIATURE CIRCUIT BREAKERS
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United States of America Patent
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N/A
Issued Date -
Jun 26, 2014
app pub date -
Dec 21, 2012
filing date -
Dec 21, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A flexible thermal trip actuator unit for a circuit breaker is disclosed. The circuit breaker prevents electrical connection between a power line source in the event of an over current. The circuit breaker includes a line connector, a load connector and a trip mechanism. The trip mechanism has an on position allowing electrical connection between the line connector and the load connector, a tripped position interrupting electrical connection between the line connector and the load connector in response to detection of a high current condition, and an off position which is required before resetting the trip mechanism to the on position. The actuator unit has a cold bar coupled to the trip mechanism, a compliant hinge and a parallel hot bar electrically coupled to the load connector. The cold bar deforms from a high current to cause the trip mechanism to assume the tripped position.
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