I-DC fuse iyidivayisi eklanyelwe ukuvikela amasekhethi kagesi emonakalweni obangelwa amandla amaningi, ngokuvamile okubangelwa ukugcwala kakhulu noma isifunda esifushane.Kuwuhlobo lwedivayisi yokuphepha kagesi esetshenziswa kumasistimu kagesi e-DC (direct current) ukuze avikeleke kumasekhethi adlulele kanye namafushane.
Amafuse e-DC afana namafuse e-AC, kodwa aklanyelwe ukusetshenziswa kumasekhethi e-DC.Ngokuvamile zenziwe ngensimbi eqhubayo noma i-alloy eklanyelwe ukuncibilika futhi iphazamise isekethe lapho i-current idlula izinga elithile.I-fuse iqukethe umucu omncane noma intambo esebenza njenge-conductive element, ebanjwe yisakhiwo sokusekela futhi ifakwe ku-casing evikelayo.Lapho i-current egeleza ngefuse idlula inani elilinganiselwe, i-element conductive izoshisa futhi ekugcineni incibilike, iphule isifunda futhi iphazamise ukugeleza kwamandla.
Amafuse e-DC asetshenziswa ezinhlobonhlobo zezinhlelo zokusebenza, okuhlanganisa izinhlelo zikagesi zezimoto nezokundiza, amaphaneli elanga, amasistimu amabhethri, nezinye izinhlelo zikagesi ze-DC.Ziyisici esibalulekile sokuphepha esiza ukuvikela imililo kagesi nezinye izingozi.