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Top Features

  • DC CC CV 2kW
  • 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
  • Available in 4Pak and 6Pak Configurations
  • Processes: Stick (SMAW), TIG (GTAW), MIG (GMAW), Multiprocess, Submerged Arc (SAW), Air Carbon Arc Cutting

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)


Stick (SMAW)

  • DC TIG welding with optional K930-2 TIG module

  • MIG (GMAW)
  • MIG (GMAW) welding up to 400 amps at 100% duty cycle

  • Multiprocess

    Submerged Arc (SAW)

    Air Carbon Arc Cutting
  • Arc Gouging with up to 5/16" (8 mm) diameter electrodes

  • 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


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    Airgas, an Air Liquide company, is the nation's leading single-source supplier of gases, welding and safety products. Known locally nationwide, our distribution network serves more than one million customers of all sizes with a broad offering of top-quality products and unmatched expertise.