JFS1-400 Pole Mount Fuse Switch bụ ụlọ ọrụ anyị mepụtara ma mepụta onwe ya.Ọ bụ ụdị mgba ọkụ ọkụ dị ala nke enwere ike itinye ma n'ime ma n'èzí.Ngwaahịa a bụ isi, kọntaktị, mkpuchi mkpuchi na akụkụ ndị ọzọ. Ụdị ọrụ ahụ bụ otu ihe dị ka omenala elu voltaji dobe mgba ọkụ.Enwere ike iji mkpanaka mkpuchi rụọ ya mgbe ejiri ya n'èzí.