The choice of fuse tube can be based on the following process
IEC specifications and UL specifications of the fuse rated current difference, see "stable current".
through the fuse tube of the stable current (depending on the specific circuit).
the ambient temperature on the impact of the carrying capacity of the fuse tube, see "ambient temperature".
pulse (impact current, surge current, starting current and current transient value) on the life of the fuse tube
