Miller Maxstar® 400 DC TIG Welder, 208-600 V #907955

The Miller Maxstar® 400 is a DC TIG and Stick inverter built for steel, stainless, and specialty metals up to 5/8 inch thick. It delivers 3 to 400 amps and connects to single-phase or three-phase power from 208 to 600 V without manual linking. High-speed pulse, program memory, and locks and limits make it a strong choice for pipe, pressure vessel, and stainless production work.

Highlights

• Auto-Line™ Technology: Connects to single-phase or three-phase primary power from 208 to 600 V with no manual linking. It also handles dirty or unreliable input power.
• High-Speed DC Pulse: Pulses up to 5,000 times per second to add arc stability, reduce heat input and warpage, and raise travel speeds. Peak amperage, peak time, and background amperage are all adjustable.
• QuietPulse™: Selecting a Sine or Triangular pulse waveshape smooths the change between peak and background amperage for the quietest pulsed arc.
• Smooth, Precise DC Arc: Well suited to stainless steel and other exotic materials.
• Program Memory: Name, save, and recall up to 99 weld programs. Transfer them between machines through the USB port.
• Locks and Limits: Sets allowable parameter ranges so operators stay within the welding procedure specification (WPS).
• Pro-Set™: Returns pulse and DIG settings to proven preset values with one press.
• Blue Lightning™ HF Arc Starter: Consistent non-contact arc starts with better reliability than conventional high-frequency starters.
• Stick Performance: Adjustable DIG tailors the arc for smooth-running 7018 or stiffer, more penetrating 6010 electrodes. Hot Start™ adaptive control prevents electrode sticking.
• Cooler Power Supply (CPS): A dedicated receptacle powers the Coolmate™ PRO 4 water cooler directly from the welder.
• Color LCD Interface: On-screen explanations and dynamic graphics guide machine setup and parameter selection.

What's Included

• Maxstar® 400 power source
• 8 ft. (2.4 m) primary power cord
• (2) 50 mm Dinse-style connectors

Applications

• Process pipe
• Tube and pipe fabrication
• Pressure vessels
• Stainless steel fabrication
• Construction and industrial welding

• Specifications
• Owner's Manual

Product Questions and Answers

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