Sensor-tripper apparatus for a circuit interrupter
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United States of America Patent
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-
Dec 13, 1988
Grant Date -
N/A
app pub date -
Aug 31, 1987
filing date -
Aug 31, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sensor-tripper apparatus for tripping the trip lever of a circuit interrupter in a power distribution circuit, the apparatus including a trip rod mounted in a tube and supported on a frame, a thermally responsive member having a predetermined curie temperature connected in the primary circuit, a magnet assembly mounted for axial movement on the tube and operatively connected to the trip rod, the magnet assembly being attracted to the thermally responsive member and holding a spring in compression whereby on release of the magnet assembly from the thermally responsive member the spring will move the magnet assembly and trip rod to trip the trip lever and a magnetic disk assembly operatively connected to the trip rod and being responsive to a high fault current in the primary circuit to move the trip rod independently of the magnet assembly to trip the trip lever.
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