Power transmission mechanism for four poles circuit breaker
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United States of America Patent
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May 7, 2013
Grant Date -
Jul 14, 2011
app pub date -
Jan 4, 2011
filing date -
Jan 13, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Provided herein is a power transmission mechanism of a four poles circuit breaker in which the contact points of a neutral pole thereof are brought into contact earlier at the time of closing and separated later at the time of opening than those of the other poles thereof, and according to the present invention, there is disclosed a power transmission mechanism of a four poles circuit breaker comprising: a switching shaft configured to provide a driving force for switching to the movable contactors of the poles; an arm provided to correspond to the four poles to transfer the rotational torque of the switching shaft; and a link configured to transfer the rotational torque of the arm to the movable contactor as a switching force, and provided to correspond to the four poles, wherein the sum of the length of the arm and the link in a neutral pole is longer than the sum of the length of the arm and the link in the poles excluding the neutral pole.
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