| 摘要 |
Circuit breaker with arc blowing and isolation, characterised in that, around the moving arc contact (12) consisting of fingers forming a first set of arc contacts, a second set of fingers (16) is arranged coaxially, in electrical contact with the fingers (12) of the first set of contacts via metal sectors (17) forming a crown, the said sectors being integrated electrically and mechanically with the first set of moving contacts via a plurality of metal arms (18), contact between the crown sectors (17) and the fingers (16) of the second set of arc contacts ceasing when the first set of moving arc contacts leaves the fixed arc contact (3) by reason of the deflection of the said fingers of the first arc contact set. <IMAGE>
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