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保险丝是用一定规格的铅、锡、锑、锌等金属制成的,是安装在电气线路上的保护装置,它只能允许正常的电流通过,当线路中发生短路或过负荷时,由于电流的热效应,温度超过了它的熔点,保险丝就会被熔断,从而切断电路,保证了线路及电气设备的安全,避免在线路上因出现过大电流而引起火
Fuse is made of a certain size of lead, tin, antimony, zinc and other metal, is installed in the electrical circuit protection device, it can only allow normal current through, when the line short circuit or overload, the current The thermal effect, the temperature exceeds its melting point, the fuse will be blown, thus cutting off the circuit, to ensure the safety of the circuit and electrical equipment, to avoid the occurrence of excessive current caused by the fire on the line