Hauv kev tsim cov vaj tse hauv pej xeem, qis-voltage circuit breakers feem ntau yog siv rau kev tiv thaiv thiab kev ua haujlwm ntawm circuits tiv thaiv overload, luv circuits, overcurrent, voltage poob, undervoltage, av faults, thiab leakage tam sim no, raws li zoo raws li tsis siv neeg hloov ntawm ob lub hwj chim qhov chaw thiab rau lub infrequent pib ntawm hluav taws xob motors. Ntxiv rau kev ua raws li cov hauv paus ntsiab lus hais txog ib puag ncig cov yam ntxwv ntawm cov khoom siv hluav taws xob tsawg-voltage hluav taws xob (saib * Daim Ntawv Qhia Txog Kev Siv Hluav Taws Xob thiab Hluav Taws Xob Hluav Taws Xob *), kev xaiv cov hluav taws xob hluav taws xob yuav tsum ua raws li cov hauv qab no rau hauv tus account:
1) Lub ntsuas hluav taws xob ntawm lub ntsuas hluav taws xob yuav tsum tsis txhob tsawg dua qhov ntsuas hluav taws xob ntawm lub Circuit Court;
2) Qhov ntsuas tam sim no ntawm Circuit Court breaker- nrog rau qhov ntsuas tam sim no ntawm nws qhov kev mus ncig ua si overcurrent- yuav tsum tsis txhob tsawg dua li qhov ntsuas tam sim no ntawm Circuit Court;
3) Qhov ntsuas luv luv- lub peev xwm tawg ntawm lub Circuit Court breaker yuav tsum tsis txhob tsawg dua qhov siab tshaj plaws luv luv -circuit tam sim no nyob rau hauv Circuit Court;
4) Thaum xaiv cov khoom siv hluav taws xob faib hluav taws xob nrog lub peev xwm xaiv kev sib koom ua ke, kev txiav txim siab yuav tsum tau muab rau lub sijhawm luv luv - lub sijhawm luv luv - Circuit Court ua thiab tawg muaj peev xwm, nrog rau kev sib koom ua ke ntawm lub sijhawm - ncua kev tiv thaiv ntawm qib tiv thaiv;
5) Qhov ntsuas qhov ntsuas hluav taws xob ntawm lub ntsuas hluav taws xob ntawm lub ntsuas hluav taws xob mus ncig yuav tsum sib npaug ntawm qhov ntsuas hluav taws xob ntawm lub voj voog;
6) Thaum siv rau kev tiv thaiv lub cev muaj zog, kev xaiv ntawm Circuit Court breaker yuav tsum suav rau lub cev muaj zog pib tam sim no kom ntseeg tau tias lub tshuab hluav taws xob tsis mus rau lub sijhawm pib lub cev muaj zog; tsim kev suav rau daim ntawv thov no yuav tsum xa mus rau * Daim Ntawv Qhia Txog Kev Lag Luam thiab Kev Siv Hluav Taws Xob Hluav Taws Xob *;
7) Kev xaiv ntawm Circuit Court breakers yuav tsum tau xav txog kev xaiv kev sib koom tes ntawm Circuit Court breakers lawv tus kheej, nrog rau ntawm Circuit Court breakers thiab fuses.