Ma relay gha galimoto ghangagaŵika mu mitundu yitatu kuyana na umo ghakugwilira ntchito: magesi, ghakukhozga -, na ghakusazgako. Ma relay gha magesi ghakugwiriskira ncito koyilo ya magesi kuti ghapangiske magesi kuti ghayendeske vigaŵa ivyo vikukhwaskana; ŵali na kapangikiro kambura kusuzga kweni nyengo yakuzgolera yikuchedwa (pafupifupi 10-30ms). Ma relay ghakukhozga ghakugwiriskira ncito vipangizo vya semiconductor (nga ni MOSFETs) kuti ghafiske kusintha kwambura kukhwaskana, ndipo nyengo zakuzgolera zikufika pa vigaŵa vya microsecond, kweni pa mtengo ukuru. Hybrid relays kuphatikizapo uwemi wa mitundu yose yiŵiri ndipo ngwakwenelera kwa vithuzithuzi vyakusintha kwa pafupipafupi.
Ma relays ghakulongozgera magalimoto ni vigaŵa vinyake vyakuzirwa chomene mu ndondomeko ya kulongozga magalimoto, ndipo ghali na ndondomeko yakulongozgera na ndondomeko yakulongozgeka. Vipangizo ivi vikugwiriskira ncito fundo ya magesi kuti vilongozgenge magesi ghakuru na magesi ghacoko. Pakuŵa chimoza mwa vinthu vya magesi ivyo vikugwiriskirika nchito comene mu magalimoto, vikugwiriskirika ncito comene mu vipangizo vya magalimoto nga ni magesi ghakulongozgera, vipukutiro, viŵiya vyakwamba, na vyakuzizimiska mphepo, ndipo pa caru cose vikukhumbikwa vikujumpha 1 biliyoni.
Ma relay ghakulongozgera magalimoto gha mu nyumba ghakugaŵika chomene mu magulu ghaŵiri kuyana na magalimoto agho ghakugwiriskira ntchito: limoza ni ma relay agho ghakupangika mwakuyana na magalimoto gha ku Europe, ghakugwiriskira ntchito chomene mu magalimoto agho ghakugwiriskira ntchito luso lwa Germany na France; linyake ni relay ilo likupangika mwakuyana na magalimoto gha ku Japan, ndipo likugwiriskirika nchito comene mu magalimoto gha ku Japan.
