Kugwiritsa ntchito Ma JR28s mndandanda wamatenthedwe owonjezera ndi oyenera kutetezedwa mochulukira komanso kulephera kwa gawo la ma mota a AC ndi ma frequency a 50/60Hz, voteji mpaka 690V, pano mpaka 0.1-630A pansi pa ntchito ya maola 8 kapena ntchito yosasokoneza. Ntchito zoperekedwa ndi ma relay awa, ndi chitetezo cha gawo-kulephera, chizindikiritso cha ON/OFF, kubweza kutentha, ndi kukonzanso pamanja/zodziwikiratu. Miyezo Yapadziko Lonse: IEC 60947-4-1 Ma relay amatha kukwera pa zolumikizira kapena kuyika ngati mayunitsi amodzi.