Uma i-fuselink iqiniswa ngokuvamile, i-fuse tube iqiniswa ukuze ihlale iseduze. Uma kwenzeka amaphutha ohlelweni, i-fault current ibangela ukuthi i-fuse incibilike ngokushesha futhi ithathe izingxenye zikagesi, okuvumela i-arc-extinguishing tube ukuthi ishiswe futhi iqhume igesi eningi, lokhu kuzokhiqiza umfutho ophezulu kanye nangaphansi kwezingxenye kanye ne-tube. Ngemuva kokuthi i-fuselink melting touch ehambayo ingabi namandla aqinisiwe futhi, i-mecganism ivaliwe futhi i-fuse tube iyawa. I-Cutout manje isesimweni esivulekile. Uma idinga ukucima ngesikhathi sokulayisha i-cutout, kufanele isebenze nge-insulating operation bar idonse oxhumana naye ohambayo, oxhumana naye oqalayo kanye noxhumana naye osizayo ozinzile oxhumana naye osizayo, ngenkathi ukudonsa oxhumana naye osizayo kuhlukaniswe phakathi koxhumana naye osizayo, kuvela i-arc kagesi futhi i-arc izokwandiswa ku-enclosure gap kanye ne-arc-extinguishing evalwe igesi ukuze iqhume i-arc ngesikhathi sokudlula kuka-zero.