Kana ichishanda ne fuselink yakasimbisirwa, fuse tube inogadziriswa kuti iite nzvimbo yepedyo. Kana paine zvikanganiso mu system, magetsi anokonzeresa kuti fuse inungunuke nekukurumidza uye itore zvidimbu zvemagetsi, izvo zvinoita kuti arc-extinguishing tube ipiswe uye iputike magasi akawanda, Izvi zvinogadzira kumanikidzwa kwakanyanya uye pasi pezvikamu pamwe chete nechubhu. Mushure mekunge fuselink yanyungudika inofamba isina simba rakasimba zvakare, mecganism inokiyiwa uye fuse tube inodonha. Kucheka kwava munzvimbo yakavhurika. Kana ichifanira kudzima panguva yekucheka, inofanira kudhonza contact inofamba ne insulating, kutanga kwayo main contact uye assistant static contact inosangana. Panguva yekudhonza assistant contact yakaparadzaniswa pakati pe assistant contacts, panoitika arc yemagetsi uye arc ichawedzerwa mu arc-extinguishing enclosure gap uye panguva imwe chete arc-extinguishing enclosure gas inoputika kuti ibvise arc panguva ye current pass zero.