Particulars units wr20th wr30th wr40th wr60th input supply volts 415 v Ⱡ10%, 3 phase, 50 hzs. Ac open circuit voltage (ocv)(max.) v. Dc 80 95 welding current range amps. Dc 10 - 200 10 - 300 10 - 400 10 - 600 max weldingcurrent @ 60% duty cycle amps. 200 300 400 600 rating kva 12 17 22 40 current regulation type amps. stepless (with remote) insulation class h (copper wound) cooling forced air cooled max. Dimensions (approx)(lxwxh) mm 790x310x690 945x380x770 970x460x830 weight (approx) kgs. 95 130 140 180 confirm to is � 4559 -