Qhov kev hloov pauv cais no yog tsim rau kev siv hauv Circuit Court ntawm AC 50Hz, ntsuas voltage txog li 400V,
thiab qis dua qhov ntsuas tam sim no txog li 100A. Lawv yog cov yam ntxwv ntawm kev sau ntawv pom tseeb ntawm
tawg xwm txheej, siv lub neej ntev, thiab siv rau lub zog tsis tshua ua haujlwm hauv kev thauj khoom.
Nws yog ua raws li cov qauv ntawm IEC60947-3, GBI4048,3etc.