Zophwanya ma circuit breakers zopangidwa ndi molded case(MCCB) ndi zida zodzitetezera zomwe zimagwiritsidwa ntchito kwambiri m'makina ogawa magetsi otsika. Amagwiritsidwa ntchito makamaka popereka chitetezo chochulukirapo, chofupikitsa magetsi komanso chotsika mphamvu zamagetsi pamizere ndi zida, komanso ali ndi ntchito yolekanitsa magwero amagetsi. Mtengo wake umakhudzidwa kwambiri ndi zinthu monga mtundu, mphamvu yamagetsi yoyesedwa, mphamvu yosweka komanso kapangidwe ka ntchito. Nthawi zambiri, mtengo wa zotsekera zamagetsi zanyumba zomangidwa molimba umayambira pa 50 mpaka 1,000 yuan, zomwe pakati pa zinthu zomwe zimakhala ndi mphamvu yochepera 100A nthawi zambiri zimakhala pakati pa 50 ndi 300 yuan. Mtengo wa zinthu zazikulu zamagetsi (250A mpaka 800A) ndi pafupifupi 300 mpaka 3,000 yuan. Zogulitsa zamitundu yapadziko lonse lapansi monga Schneider Electric, ABB ndi Siemens ndizokwera mtengo. Mtengo wazinthu zina zanzeru ukhoza kufika pa zikwi zingapo za yuan.

Zotsekereza magetsi zoumba zimagwiritsidwa ntchito makamaka m'mafakitale a mafakitale, nyumba zamalonda, makina ogawa magetsi okhala m'nyumba, makabati ogawa magetsi, makina opanga magetsi a photovoltaic ndi zomangamanga, ndi zina zotero. M'mafakitale, zitha kugwiritsidwa ntchito kuteteza ma mota amagetsi, zida zopangira ndi mizere yogawa magetsi. M'mafakitale, nthawi zambiri zimagwiritsidwa ntchito ngati switch yayikulu kapena switch ya nthambi ya kabati yogawa magetsi kuti zitsimikizire kuti makina ogawa magetsi akugwira ntchito bwino komanso mokhazikika.