... of single phase & three phase SCR power regulator,thyristor power controller,SCR power regulator. single phase SCR power controller new version S9 series. zero ... ,9KW,15KW,22KW,28KW,33KW,39KW,44KW.Auxiliary power source: 220VACnput signal: 4~20mA,1~5VDC,2~10VDC,0~20mA, ... output is stopped immediately. Once the malfunction is eliminated and power is restored, the system will buffer the output to prevent ...