I-Residual current esebenzayo i-circuit breaker kunye ne-rerated current ye-4P sisixhobo sombane esisetyenziselwa ukukhusela ukhuseleko lwesekethe. Ngokuqhelekileyo iqulethe uqhagamshelwano oluphambili kunye noqhagamshelwano oluncedisayo omnye okanye ngaphezulu, onokufikelela imisebenzi yokukhusela iziphene ezifana nokugqithisa, isiphaluka esifutshane, kunye nokuvuza.
1. Ukusebenza kakuhle kokukhusela
2. Ukuthembeka okuphezulu
3. Iindlela ezininzi zokukhusela
4. Ezoqoqosho kunye nokusebenza