Heavy Duty Metal Arc Welding Rectifier requires a power supply of 500Amps at 60% D.C. For tough industrial applications. The Arc Welding Rectifier is manually operated at a current range of 70 Amps to 500 Amps. Heavy Duty Metal Arc Welding Rectifier is manufactured by Technocrat Engineers. Technocrat Engineers also manufactures a wide range of Welding Machines, Automatic Welding Systems, Torches, Welding Composite Outfits, Welding Rectifiers, Welding Transformers, Turn Tables and Automation Modules. The Heavy Duty Metal Arc Welding Rectifier of model TECHNOARC 500 comes with copper windings and works at an open circuit voltage of 80 V D.C.