RCD hauv Circuit Court breaker yog cov khoom siv tam sim no, tseem hu ua cov cuab yeej tam sim no lossis cov neeg tiv thaiv tam sim no. Nws yog qhov tod tiv thaiv ntaus ntawv, lub ntsiab muaj nuj nqi uas yog los tiv thaiv cov hluav taws xob hluav taws xob los ntawm kev xau thiab khoom siv hlawv cov xwm txheej los ntawm kev xau. RCD tuaj yeem tshawb xyuas qhov toasting tam sim no ntws los ntawm txoj kev thiab sai sai txiav tawm lub hwj chim muab thaum muaj kev nyab xeeb ntawm cov neeg thiab khoom siv.
Tshwj xeeb, tus muaj lub ntsiab cai ua hauj lwm ntawm RCD yog raws Kirchhoff txoj cai tam sim no, uas ntseeg tau tias qhov tam sim no muaj sib npaug. Thaum cov dej xau tam sim no nyob rau hauv cov kab ke tshaj cov nqi teeb tsa, RCD yuav txiav txim nws raws li qhov txawv txav thiab txiav tawm ntawm lub zog hluav taws xob. Qhov kev ntsuas kev tiv thaiv no yog qhov tseem ceeb tseem ceeb rau kev tiv thaiv hluav taws xob hluav taws xob sib txawv, hluav taws thiab khoom siv kev puas tsuaj.
Tsis tas li ntawd, RCD tau siv dav, tsis yog nyob hauv tsev neeg, tab sis tseem nyob rau hauv cov chaw tsim khoom, muaj kev tiv thaiv kev nyab xeeb rau hluav taws xob. Thaum txhim kho RCD, nws yog qhov tsim nyog yuav kom ntseeg tau tias nws ua raws li cov qauv hauv ntiaj teb thiab hauv tebchaws thiab tau siv raws li cov xwm txheej thiab cov cai.
Nws yuav tsum raug sau tseg tias txawm hais tias RCD muaj kev tiv thaiv hluav taws xob tseem ceeb, nws tsis tuaj yeem hloov dua lwm yam khoom siv hluav taws xob lossis ntsuas. Yog li ntawd, thaum siv RCD, lwm yam kev ntsuas kev nyab xeeb uas tsim nyog yuav tsum tau coj los ua kom muaj kev nyab xeeb ntawm cov hluav taws xob.