the fuse of the melt to be used in accordance with the requirements of the melt, not allowed to increase the melt or other conductors instead of the melt
the line in the fuse at all levels of the rated current to be matched with the melt to maintain the rated current must be greater than the next level of melt rated current
the rated voltage of the fuse to adapt to the line voltage level, the fuse rated current is greater than or equal to the melt rated current
the protection of the fuse characteristics should be protected with the overload characteristics of the object, taking into account the possible short-circuit current, the choice of the corresponding breaking capacity of the fuse
