保险丝 Fuse (electrical)
（重定向自Semiconductor fuse）
保险丝，又称熔断器、熔丝，是一种连接在电路上用以保护电路的一次性组件，通常采用低熔点的铅锡合金、锌、铜、银的丝状或片状材料制成。当电路上电流过大时，使其中的金属线或片产生高温而熔断，导致开路而中断电流，以保护电路免于受到伤害。旧保险丝熔断后需要人工更换新的保险丝以使电路恢复运行。
Semiconductor fuse
中文百科
英语百科
Fuse (electrical) 保险丝
（重定向自Semiconductor fuse）
In electronics and electrical engineering, a fuse (from the French fusée, Italian fuso, "spindle") is a type of low resistance resistor that acts as a sacrificial device to provide overcurrent protection, of either the load or source circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, interrupting the circuit that it connects. Short circuits, overloading, mismatched loads, or device failure are the prime reasons for excessive current. Fuses can be used as alternatives to circuit breakers.
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