Fụpụ wepụbechapụna ibu ngbanwe fusebechapụbụ nke n'èzí eji elu voltaji na-echebe ngwaọrụ, Tobe connecte na incomin-g feeder nke nkesa transformer ma ọ bụ nkesa edoghi, ọ tumadi na-echebe transformeror ahịrị si short circuit andoverload, na on / gbanyụọ loading, ugbu a, Drop-out fuse cutout bụ nke mejupụtara insulat insulator akwado na fuse tube, static kọntaktị na-obere n'akụkụ abụọ nke insulator nkwado na-akpụ akpụ na kọntaktị na-akpụ akpụ n'ime tubes abụọ. tube nke arcexting. Mpụta phenolic compound tube tube ma ọ bụ epoxy glasstube, Load ịmafe fiusi cutout na-enye enfored enfored elastic enyemaka kọntaktị na arc-emenyụ exclosure maka ịmafe on-apụ loading ugbu a.