company news about Impedance of fuse

The impedance of the fuse can usually be ignored in the entire circuit. However, for the Naga -level fuse, the impedance will reach a few ohms, and the pressure drop in the low -voltage line will be more conspicuous, and it needs to be considered. Most fuses are composed of positive temperature coefficient materials, so you can refer to the cold -state resistance and thermal resistance, and the actual working impedance is between the two.

Cold resistance is the value tested when the fuse is applied without 10%of the rated current. When the thermal resistance flows through the rated current, it is calculated by the voltage drop in the stable state. The impedance error of the fuse can be limited to a certain range, and the cost is increased.