50-400 A, 380 V, special, diode, step adjustment – 40 steps (4х10), for assembly of semi-automatic machines in an atmosphere of shielding gases. Protection against overloads and short circuits in the welding circuit, disconnection from the mains at no load.
60-630 A, 380 V, special, diode, step adjustment – 50 steps (5х10), for assembly of semi-automatic machines in an atmosphere of shielding gases. Protection against overloads and short circuits in the welding circuit, disconnection from the mains at no load.
60-500 A, 380 V, universal, thyristor, smooth adjustment, for assembly of semi-automatic arc welding machines in an atmosphere of shielding gases and covered-electrode DC welding.