| 摘要 |
A time delay fuse (10) and various subassembly for that time delay fuse. The fuse includes a housing (12) made of an insulating material. The housing encloses a short-circuit fusible element (30), preferably a copper or copper alloy strip having a plurality of slots (34). The housing also encloses one or more rigid meltable fusible elements (46, 48), preferably a plurality of solder bars. A body (62) of resilient, compressible insulating material has at least one passageway through which each of the time delay fusible elements extends. When the rigid meltable fusible elements melt, the circuit through the fuse opens. In addition, the passageway which surrounded the rigid meltable fusible elements collapses upon its melting. This provides protection against "arc-back".
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