Kev ruaj ntseg Circuit Court feem ntau yog ua tiav los ntawm cov tswj hluav taws xob thiab cov khoom siv tiv thaiv hluav taws xob. Cov cuab yeej tiv thaiv hluav taws xob yog hais txog cov cuab yeej uas tau teeb tsa hauv Circuit Court, uas yuav ua rau fusing, tsis kam hloov los yog lwm yam kev hloov ntawm lub cev nyob rau hauv cov khoom muaj feem xyuam thaum lub Circuit Court muaj dhau-tam sim no, dhau-voltage los yog overheating tej yam kev mob, thiaj li mus txiav tawm lub Circuit Court. los yog inhibit qhov tam sim no thiab voltage hloov, thiab plays lub luag hauj lwm ntawm kev tiv thaiv Circuit Court thiab cov khoom siv hluav taws xob. Nws tuaj yeem muab faib ua peb pawg raws li cov haujlwm sib txawv: dhau-tam sim no, dhau-voltage thiab overheating tiv thaiv.
Lub hauv paus ntsiab lus ntawm kev ua haujlwm thiab muaj pes tsawg leeg ntawm lub fuse: thaum lub Circuit Court luv luv los yog overloaded, cov thermal nyhuv ntawm overcurrent yuav yaj thiab vaporize lub yaj los ua ib tug tawg, thiab cov tawg yuav tsim ib tug arc. Lub fuse yuav txiav tawm qhov txhaum Circuit Court los ntawm kev tua lub arc, ua lub luag haujlwm ntawm kev tiv thaiv Circuit Court. Lub fuse yog tsim los ntawm yaj, arc extinguishing nruab nrab, M nyhuv point, insulating casing, tiv tauj davhlau ya nyob twg thiab qhia.
Lub fuse muaj cov yam ntxwv ntawm qhov muaj peev xwm tawg loj thiab muaj zog tam sim no txwv lub peev xwm, uas tuaj yeem muab cov txiaj ntsig zoo tshaj plaws ntawm kev tiv thaiv luv luv luv Circuit Court. Nrog rau qhov nce ntawm qhov tam sim no amplitude, lub sijhawm ua haujlwm ntawm lub fuse txo qis, uas tuaj yeem ua rau tsawg dua 1ms. Lub peev xwm txwv tam sim no yog qhov pom tseeb, thiab tus nqi hluav taws xob dhau los yuav luag tas li, uas tuaj yeem tiv thaiv cov kab hluav taws xob zoo; Lub sijhawm ua haujlwm ntawm kev hloov hom kev tiv thaiv cov cuab yeej muaj qhov txwv qis, uas feem ntau nyuaj kom qis dua 10ms. Nrog rau qhov nce ntawm qhov tam sim no amplitude, qhov txhaum lub zog tus nqi dhau los ntawm kev nce exponentially, thiab kev nyab xeeb thiab kev ntseeg siab ntawm kev hloov hom kev tiv thaiv cov cuab yeej raug txo kom tsawg, nrog rau kev nyab xeeb ntawm Circuit Court. Yog li ntawd, thaum qhov txhaum tam sim no me me, cov khoom siv hloov pauv (circuit breakers, thiab lwm yam) feem ntau yog siv los tiv thaiv, thiab thaum qhov txhaum tam sim no loj, fuses siv los tiv thaiv.