... Switch YCH1-100 1)Poles:1,2,3,4 2)Output:15000pcs/day 3)OEM 4)CE,CB,ISO9001,14001,IEC Isolating Switch ... YCH1-100 ... YCH1-100 series isolating switch is applying in AC50/60HZ, ... distribu-tion and control loop, as the key switch of terminal electrical, also can be used ...