| 摘要 |
The present invention specifies an arc quenching device having improved current limitation and reduced heat losses, in the case of which a moving contact piece ( 31 ) is not subject to increased erosion and wear. For this purpose, a quenching path according to the invention is provided which takes over an arc from said contact piece ( 31 ) and comprises arc guide rails ( 61 ), a quenching chamber ( 71 ) and a current-limiting element ( 8 ). Based on circuit breakers with double interruption, the current-limiting element ( 8 ) is preferably provided between arc guide rails ( 62, 52 ) of a second contact point and provided with a blowing section ( 81 ) for additional magnetic blowing of the arc of the first contact point.
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