Mabhokisi eS7 surgace anodzivirira ma "short circuit" uye overload, uye anoshandiswa mumaindasitiri, mabhizinesi uye mudzimba. Anewo mabhenefiti ekudzivirira kwepamusoro (kusvika kuIP20), kugona kukuru kwekupwanya, kushanda kwakavimbika uye kunonzwa, nyore, kuisa ma "multi pole", kushanda kwenguva refu, nezvimwewo. "Single pole" inonyanya kukodzera ma "circuit" e50Hz ne240V AC; ma "pole" maviri, matatu nemana akakodzera ma "circuit" e50Hz ne415V kudzivirira overload uye short circuit. Anoshandiswawo kubatidza kana kudzima michina yemagetsi nema "lighting circuit" mumamiriro ezvinhu akajairwa.