Qhov no 4P 63A / 30MA RCD AC hom ua rau RCD cov tshuab sib tsoo, ua rau RCD kom nrawm nrawm ntawm cov khoom siv hluav taws xob thiab cov neeg ua haujlwm.
Lub hauv paus ntsiab lus ua haujlwm ntawm 2P 63A / 30MA RCD AC hom yog ua raws cov ntawv hloov chaw tam sim no. Thaum twg ib qho kev tsis sib xws tam sim no (i.e. Tauj) tshwm sim hauv lub tshuab hluav taws xob, cov chaw nyob tam sim no thiab tsim cov hlau nplaum flucention rau lub xau dej tam sim no. Qhov sib nqus flux ua rau RCD sab hauv rutchism, ua rau RCD kom txiav tawm hluav taws xob sai sai.