Fuse ea DC ke sesebelisoa se etselitsoeng ho sireletsa lipotoloho tsa motlakase ts'enyong e bakiloeng ke ho fetella ha hona joale, hangata e bakoang ke moroalo o mongata kapa potoloho e khuts'oane.Ke mofuta oa sesebelisoa sa ts'ireletso ea motlakase se sebelisoang lits'ebetsong tsa motlakase tsa DC (direct current) ho sireletsa khahlanong le li-circuits tse fetelletseng le tse khutšoane.
Li-fuse tsa DC li tšoana le li-fuse tsa AC, empa li etselitsoe ho sebelisoa lipotolohong tsa DC.Ka tloaelo li entsoe ka tšepe ea conductive kapa alloy e etselitsoeng ho qhibiliha le ho sitisa potoloho ha motlakase o feta tekanyo e itseng.Fuse e na le khoele e tšesaane kapa terata e sebetsang e le ntho ea conductive, e ts'oaroang ke sebopeho sa ts'ehetso mme e kenyelelitsoe ka har'a casing e sireletsang.Ha motlakase o phallang ka fuse o feta boleng bo lekantsoeng, ntho ea conductive e tla futhumatsa 'me qetellong e qhibilihe, e robe potoloho le ho sitisa ho phalla ha hona joale.
Li-fuse tsa DC li sebelisoa mefuteng e mengata ea lits'ebetso, ho kenyeletsoa lisebelisoa tsa motlakase tsa likoloi le tsa sefofane, liphanele tsa letsatsi, lits'ebetso tsa betri, le lisebelisoa tse ling tsa motlakase tsa DC.Ke karolo ea bohlokoa ea polokeho e thusang ho itšireletsa khahlanong le mollo oa motlakase le likotsi tse ling.