Qhov sib txawv ntawm fuses thiab Circuit Court breakers: tib lub ntsiab lus yog qhov kev tiv thaiv luv luv tuaj yeem ua tiav. Lub hauv paus ntsiab lus ntawm fuse yog tias tus neeg xyuas pib yuav raug cua sov los ntawm qhov tam sim no ntws los ntawm tus neeg xyuas pib, thiab tus neeg xyuas pib yuav yaj tom qab ncav cuag lub melting point ntawm tus neeg xyuas pib. Yog li ntawd, cov khoom siv hluav taws xob thiab cov kab uas siv rau kev tiv thaiv Circuit Court yuav tsis raug hlawv thaum lub Circuit Court raug txiav. Nws yog qhov sib txuam ntawm cov cua sov, yog li kev tiv thaiv overload tuaj yeem ua tiav. Hloov cov yaj thaum nws hlawv tawm.
Lub Circuit Court breaker kuj tseem tuaj yeem paub qhov luv luv thiab kev tiv thaiv overload ntawm kab, tab sis lub hauv paus ntsiab lus txawv. Nws paub txog kev tiv thaiv kev tiv thaiv hluav taws xob los ntawm cov txiaj ntsig hauv qab tam sim no (electromagnetic tso tawm), thiab paub txog kev tiv thaiv overload los ntawm cov nyhuv thermal tam sim no (nws tsis yog fusing, yog li nws tsis tsim nyog los hloov cov khoom siv). Hauv kev xyaum, thaum cov khoom siv hluav taws xob hauv Circuit Court nyob ze rau ntawm lub fuse siv rau lub sijhawm ntev, lub fuse yuav maj mam ua kom sov kom txog thaum fused. Raws li tau hais los saum toj no, qhov kev sib txuas ntawm fuse yog qhov tshwm sim ntawm kev sib koom ua ke ntawm tam sim no thiab lub sijhawm los tiv thaiv kab. Nws yog ib zaug. Lub Circuit Court breaker yog kev tiv thaiv ntawm lub Circuit Court tiv thaiv tam sim ntawd nce nyob rau hauv tam sim no thaum tam sim no nyob rau hauv lub Circuit Court dheev nce thiab nws yuav cia li disconnect thaum nws tshaj lub load ntawm lub Circuit Court breaker. Piv txwv li, nws yog kev tiv thaiv ntawm Circuit Court tiv thaiv tam sim no nce tam sim no thaum muaj qhov xau loj, luv luv, lossis tam sim no loj tam sim no. Thaum pom qhov ua rau pom, nws tuaj yeem hloov mus rau kev siv ntxiv. Raws li tau hais los saum no, lub fuse fusing yog qhov tshwm sim ntawm kev sib xyaw ua haujlwm ntawm lub sijhawm tam sim no thiab lub sijhawm, thaum lub tshuab hluav taws xob yuav tawm mus thaum lub sijhawm tam sim no tshaj nws cov nqi teev, thiab lub sijhawm cuam tshuam tsis tuaj yeem xav txog. Circuit Court breakers feem ntau yog siv cov khoom siv hluav taws xob tsawg. Kuj tseem muaj qee qhov chaw uas fuses tsim nyog.