The second is the electrode part, There are generally two, it is an important part of the connection between the melt and the circuit, it must have good conductivity, and should not produce obvious equipment touch resistance; the third is the bracket part, the melt of the fuse is generally thin and soft, and the bracket The effect is to fix the melt and make the three parts a rigid whole, which is convenient for equipment and use. It must have good mechanical strength, insulation, heat resistance and flame retardancy, and should not crack, deform, or deform during use. Burning and short circuit etc.

Car fuse holder in progress During use, when current flows through the conductors, there will be a certain resistance between the conductors, so the conductors will heat up, and the heat generation of the fuse holder will follow to a certain extentQ=0.24I2RTthis formula, where Tis the moment when current flows through the conductor,< span style="font-size:12pt;">Ris the resistance of the conductor,< span style="font-size:12pt;">0.24is a constant andQis the calorific value, etc.

Blowing of car fuse holder During the process of energization, the heat of the current conversion will cause the temperature of the melt to rise. In the process of loading the normal operating current or the permitted overload current, the heat generated by the current will pass through the melt, the shell and the surrounding. The heat emitted by methods such as radiation from the environment can gradually reach equilibrium.

Heat dissipation of car fuse holders When the speed cannot keep up with the heating speed, the heat will gradually accumulate on the melt, causing the temperature of the melt to rise. Once the temperature reaches and exceeds the melting point of the melt material, it will liquefy or vaporize, and then the current will be disconnected and the circuit will be disconnected. and personal safety maintenance effect.