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VS1真空断路器因其灭弧介质和灭弧后触头间隙的绝缘介质

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都是真空而得名

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适用于频繁操作、灭弧不用检修的优点

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当断路器断开瞬间

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静动触头分离

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形成电弧

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高真空环境有效抑制电子游离

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触头锤头式加接触面波浪纹设计

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让电弧成多个爆炸式发散

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让金属快速横向向外层金属屏蔽层运动

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在屏蔽层快速凝结

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高真空环境下气体分子平均自由程变大

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碰撞游离概率低

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绝缘强度比常规气体高数十倍

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使介电强度迅速回复

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以及随着距离的增大

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从而让电流过零时 迅速切断电弧 且不会再次击穿