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DC400 Submerged Arc Welder

DC400 Submerged Arc Welding Machine

Top Features

  • Rugged Tubular Pak-Lok-Frame
  • 400 amps DC at 36 volts and 100% Duty Cycle
  • Built to Red-D-Arc Extreme-Duty Specifications
  • Arc Force, Pinch, Continuous Output Control

With true multiprocess capabilities, the DC400 provides outstanding arc characteristics for both constant current and constant voltage applications. Full arc control with MS-style remote control connections. Can also be configured as a 4Pak or 6Pak Multioperator System.

Product Details


DC Amperage Range: 60 A at 22 V - 500 A at 42 V
Maximum OCV: 57 VDC
Rated CC Output: 500 A at 40 VDC, 50% duty cycle
450 A at 38 VDC, 60% duty cycle
400 A at 36 VDC, 100% duty cycle
DC Voltage Range: 12 - 42 V
Rated Input Current: 400 A, 36 VDC, 100% duty cycle: 78 A at 230 V, 39 A at 460 V, 31 A at 575 V
Voltage Input: 230/460/575/3/60
Weight: 544 lb (248 kg) including frame
Dimensions: H: 32" (813 mm) W: 28" (711 mm) L: 34.25" (870 mm)

Additional Features


  • Extreme-Duty™ stainless steel construction for operation in harsh environments
  • Outstanding arc characteristics on both constant current and constant voltage processes
  • Windings and rectifiers protected against moisture and corrosive environments
  • Single range full output current/voltage potentiometer for easy operation
  • Solid state circuitry provides extra-long life for repetitive welding applications
  • Ammeter/voltmeter
  • Three position mode switch - CC (Stick, TIG), CVI (MIG, Flux-Cored), CV (Submerged Arc)
  • Arc force control (CC mode only) to adjust short circuit current for a soft arc or a forceful driving arc
  • Arc control (pinch effect) to control splatter, fluidity, and bead shape (operates only in CVI mode)
  • Line voltage compensation for constant output regardless of input power fluctuations
  • Fan cooled with electronic and thermostatic protection from current overload and excessive temperatures
  • Amphenol and terminal strip connections for remote control and wire feeders
  • Power on/off switch with pilot light
  • 3 year warranty on parts and labor
  • Certified to ISO requirements, CSA approved
  • Rugged tubular Pak-Lok-Frame™ enclosure for increased protection
  • Can be assembled with Pak-Lok™ connectors into 4Pak™ and 6Pak™ multioperator systems with single source power input ideal for onsite applications including construction and shipbuilding

Options, Accessories and Related Equipment

Shop cart
4Pak and 6Pak configurations
wire feeders
2 kW 120 VAC duplex auxiliary receptacles
remote control
common ground bar

Related Equipment
LN25 wire feeders
RC1 remote control
Welding Safety Equipment

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DC400 Submerged Arc Welder

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Airgas, an Air Liquide company, is a leading U.S. supplier of industrial, medical and specialty gases, as well as hardgoods and related products; one of the largest U.S. suppliers of safety products; and a leading supplier of ammonia products and process chemicals.