| 摘要 |
<p>Isolating switch comprising a pivoting blade linked to a first connector, equipped with a contact hammer interacting with a contact jaw linked to a second connector, characterised in that it comprises a first contact finger (31) fixed to a first spring (32) and linked electrically to the said second connector, a second contact finger (41) fixed to a second spring (42) and linked electrically to the said second connector, the said fingers capable of coming successively into contact with an arc horn (25) extending the said hammer (14) during the operation of opening the said isolating switch, the said second finger and second spring being arranged so that the movement of opening the isolating switch tends more and more to tension the said second spring and, after a given opening travel, to cause the second finger of the arc horn to be released. <IMAGE></p> |
