Fuse tube selection fuse factor
Fuses must have a certain overload capacity
In general, the fuse resistance is inversely proportional to its rated current value. In the protection circuit requires the fuse the smaller the better resistance, so that its loss of power is also small.
Ambient temperature or known operating temperature has a direct effect on the operation of the fuse. The higher the ambient temperature, the farther the fuse at work, the shorter the life expectancy.
When the fuse is energized, the voltage at both ends is much less than the rated voltage, so the additional load is not critical
Rated current - In fuse rated current is its nominal rated current, usually the circuit can work long-term maximum current value.