跌落式熔断器在正常运行时，熔丝管借助熔丝张紧后形成闭合位置。
Cascade fuse in normal operation, melting molten silk fiber tube with a tight formed after the position.
拉负荷跌落式熔断器增加弹性辅助头及灭弧罩，用以分、合负荷电流。
Pull load cascade fuse increase elasticity auxiliary head and arcing cover to points, and load current.
拉负荷跌落式熔断器增加弹性辅助头及灭弧罩，用以分、合负荷电流。
Pull load cascade fuse increase elasticity auxiliary head and arcing cover to points, and load current.
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