An observing block which corresponds to the auxiliary fuse tube in position is sleeved on the fuse wire.
熔丝上套装有与副熔丝管位置对应的观察块。
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.
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。
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