Iibhokisi ze-S7 surgace zisebenza nge-short circuit kunye ne-overload protection, kwaye zisetyenziswa kwinkqubo yokusasazwa kwezibane zoshishino, zorhwebo kunye neendawo zokuhlala. Zikwanazo neengenelo zomgangatho ophezulu wokhuseleko (ukuya kuthi ga kwi-IP20), amandla aphezulu okuqhekeza, isenzo esithembekileyo nesinobuthathaka, ukulula, ukufakwa kwee-multi pole, ubomi benkonzo ende, njl. I-single pole ifanelekile kakhulu kwi-circuit ye-50Hz kunye ne-240V AC; ii-pole ezimbini, ezintathu kunye nezine zifanelekile kwi-circuit ye-50Hz kunye ne-415V ukukhusela i-overload kunye ne-short circuit. Zikwasetyenziselwa ukuvula okanye ukucima izixhobo zombane kunye nee-light circuits phantsi kweemeko eziqhelekileyo.