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　　Knowledge of automotive fuses

　　Fuse is the common name for a fuse, which plays a role in short-circuit protection, protecting circuits and electrical equipment from damage caused by short-circuit faults, and avoiding fires. In the past, metal fuses were essential components in our home circuits, but with the advent of circuit breakers, fuses became less common. However, this does not mean that fuses are useless. With the emergence of new materials, many new fuses have been widely used in various circuits, playing a role in short-circuit protection.

　　Usually, a fuse consists of three parts:

　　1. Melt, which is the core of a fuse, plays a role in cutting off the current when blown. Household fuses are commonly made of lead antimony alloy;

　　2. Electrode, it is the component that connects the melt and the circuit. There are usually two, which must have good conductivity, be tightly connected, and should not have excessive contact resistance;

　　3. The shell (bracket) and fuse melt are generally thin and soft. The function of the shell (bracket) is to fix the melt and electrode together, forming a rigid whole that is easy to install and use. It generally has good mechanical strength, insulation, heat resistance, and flame retardancy.

　　Automotive circuits are no exception and also require short-circuit protection. For us car owners, in a sense, fuses are life-saving wires. Don't underestimate them and treat them as optional.

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