Xa isebenza nge-fuselink eqinileyo, ityhubhu ye-fuse iyalungiswa ukuze isondele. Kwimeko apho kukho iimpazamo kwinkqubo, umbane we-fault ubangela ukuba i-fuse inyibilike ngoko nangoko kwaye ithathe iziqwenga zombane, ezivumela ityhubhu yokucima i-arc ukuba ifudumale kwaye iqhume igesi eninzi, ezi zinto ziya kuvelisa uxinzelelo oluphezulu kwaye ngaphantsi kwe-arc kunye netyhubhu. Emva kokuba i-fuselink inyibilike, unxibelelwano oluhambayo alunawo amandla aqinileyo kwakhona, i-mecganism ivaliwe kwaye ityhubhu ye-fuse iphume. I-Cut ikwindawo evulekileyo. Xa kufuneka icime ngexesha lokulayisha, kufuneka isebenze nge-insulating operating bar itsale unxibelelwano oluhambayo, unxibelelwano oluqalayo kunye nonxibelelwano oluhambelanayo oluxhasayo luqhagamshelwe. Ngelixa ukutsala unxibelelwano oluncedisayo kwahlulwe phakathi konxibelelwano oluncedisayo, kuvela i-arc yombane kwaye i-arc iya kwandiswe kwindawo evalekileyo yokucima i-arc kwaye ngelixa i-arc-extinguisher iqhuma igesi ukuze ikhuphe i-arc ngexesha lokudlula kwe-zero.