Fusing factor is the ratio of minimum fusing current to the current rating of the fusing element.
Mathematical Formula
Fusing factor Formula = Minimum fusing current / Current rating of fuse element
Good to know
- The value of fusing current is always more than 1
- The higher the fusing factor, the lesser is the difficulty in avoiding deterioration and vice versa
- Enclosed type cartridge fuses can employ lower values of fusing factor while using silver element
- The fusing factor of rewireable fuses employing copper wire elements is generally 2
- The minmum fusing current itself is a value that corresponds to choose value of time indicated on time/current curve which is obtained itself from prescribed testing condition
- The fuse rating or current rating of fuse element is the value of current which flows through element without melting it