| 摘要 |
This invention relates to a circuit breaker ( 1 ) for high or medium voltages, of the type having a drive bar ( 70 ) coupled to a drive member, and a circuit-breaking chamber ( 2 ) facing it and having two contacts ( 3, 4 ), each contact ( 3, 4 ) including a main contact ( 30, 40 respectively) and an arcing contact ( 31, 41 respectively), with one of the two contacts ( 3 ) being fixed to a blast or extinguishing nozzle ( 32 ). According to the invention, the second contact ( 4 ) and the drive bar ( 70 ) are joined together by coupling means ( 6 ) in such a way that they move together in translation in the same direction, the transmission means ( 5 ) being disposed on the side ( 21 ) of the chamber ( 2 ) that is adjacent to the drive bar ( 70 ), and are adapted to transmit the motion of the driven second contact ( 4 ) to the first contact ( 3 ).
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