Circuit breaker rotary contact arrangement
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United States of America Patent
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-
Feb 6, 2001
Grant Date -
N/A
app pub date -
Dec 20, 1999
filing date -
Dec 20, 1999
priority date (Note) -
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Abstract
A circuit breaker rotary contact arrangement is disclosed in which the ends of the line and load straps supporting the fixed contacts are hook-shaped to control the angle of the repulsive force exhibited between the fixed contacts and the movable contacts arranged at the opposing ends of the rotary contact arm. The fixed contacts face outwardly away from the central pivot of the contact arm such that a horizontal component of the popping force acts away from the center of rotation keeping the contact arm in tension for avoiding a buckling effect allowing contact arms with smaller cross sectional area to be used to increase contact arm mobility and reduce the cost.
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