Analog scr power regulator from pro-med instruments is superior to of its kind .The standard features include soft-start; o/p limit; over temperature trip; and over current tip. It comes with following specifications: dimension: 210 w x 290 h x 180 d mm - 235 w x 380 h x 250 d mm - 300 w x 460 h x 260 d mm; control input - current - dc 4-20 ma, contact - zero voltage contact; output voltage - 97% minimum 50/60 hz of input voltage; control mode - phase angle; possible load - all resistance load and transformer primary; current rating - 35 a, 50a- 80, 100 a - 120, 150, 200, 250 a; power - ac 100, 220, 380, 415, 440, 460v, 50/60 hz; and scr element cooling - natural air, fan cooled.