Hauv qis-voltage fais fab faib tshuab, fuses yog cov khoom siv hluav taws xob uas muab kev tiv thaiv kev nyab xeeb. Lawv tau siv dav hauv kev tiv thaiv kab hluav taws xob thiab khoom siv tiv thaiv. Thaum ib qho luv luv Circuit Court lossis overload tshwm sim hauv daim phiaj hluav taws xob lossis cov khoom siv, fuses txiav tawm lub Circuit Court, tiv thaiv kev puas tsuaj rau cov khoom siv hluav taws xob thiab tiv thaiv kev sib kis.
Lub fuse muaj ib lub hauv paus insulating (los yog kev txhawb nqa), kev sib cuag, thiab cov khoom fusible. Lub ntsiab lus fusible yog lub luag haujlwm tseem ceeb ntawm lub fuse; nws ua zoo li ib tug tshwj xeeb hlau txuas nyob rau hauv series nyob rau hauv lub Circuit Court. Thaum lub caij luv luv lossis overload tshwm sim, qhov tam sim no loj dhau, ua rau lub caij fusible yaj vim overheating, yog li disconnecting Circuit Court. Fusible ntsiab feem ntau yog ua nyob rau hauv daim ntawv ntawm cov xov hlau, daim phiaj, los yog nplooj ntawv. Cov ntaub ntawv siv rau cov ntsiab lus fusible yog tus cwj pwm los ntawm cov ntsiab lus melting tsawg, cov khoom ruaj khov, thiab yooj yim ntawm melting. Cov khoom siv feem ntau suav nrog cov hlau lead-tin alloys, nyiaj- plated tooj liab, zinc, thiab nyiaj. Ib qho hluav taws xob arc yog generated thaum lub sij hawm tus txheej txheem ntawm lub fusible caij melting thiab disconnecting lub Circuit Court. Txhawm rau kom muaj kev nyab xeeb thiab ua tau zoo tua cov arc, cov khoom fusible feem ntau yog nruab rau hauv lub tsev fuse, thiab kev ntsuas raug coj los tua cov arc sai.
Fuses muaj qhov zoo xws li cov qauv yooj yim, siv tau yooj yim, thiab tus nqi qis, thiab tau siv dav hauv cov tshuab hluav taws xob tsawg -voltage.
