Maxstar® 400 TIG Welder | MillerWelds

Maxstar® 400 208-600 V

907873
The Maxstar 400 is a powerful, compact power source capable of welding up to 5/8” material. High speed pulse control provides maximum productivity and weld quality while conserving energy compared to traditional welding machines.
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Features

What's Included

  • Maxstar® 400
  • 8 ft. (2.4 m) primary cord
  • (2) 50 mm Dinse style connectors
Intuitive Interface LCD Display
Ensure proper machine setup and parameter selection with informative on-screen explanations and dynamic images.   Learn More
QuietPulse™
QuietPulse is activated by changing the waveshape for DC pulse welding, creating a slower, more fluid transition between the background and peak amperage to create the least possible audible noise.   Learn More
Blue Lightning™
High-frequency (HF) arc starter for non-contact arc initiation. Provides more consistent arc starts and greater reliability compared to traditional HF arc starters.
Stick Features
Tailored arc control (DIG) allows the arc characteristics to be changed for specific applications and electrodes. Smooth running 7018 or stiffer, more penetrating 6010. Hot Start™ adaptive control provides positive arc starts without sticking.
USB Port
Provides the ability to easily update software, back-up settings and transfer saved weld programs from one unit to the next.
Program Memory
Allows easy naming, saving and recalling of favorite weld settings.
Pro-Set Feature (professional settings)
This feature eliminates the guesswork when setting weld parameters. Use Pro-Set when you want the speed, convenience and confidence of pre-set controls. Simply select the feature and adjust until Pro-Set appears on the display. The Pro-Set feature is available for Balance, Frequency, Pulse and DIG parameters.   Learn More
Locks and Limits
Provides control of the weld parameter ranges minimizing deviations from the welding procedure specifications (WPS).   Learn More
Auto-Line™ Technology
Allows hookup to either single-phase or three-phase primary input voltage, 208-600 volts dependent on the machine, with no manual linking, providing convenience in any job setting. An ideal solution for dirty or unreliable input power.   Learn More
DC TIG Features
Exceptionally smooth and precise arc for welding exotic materials. High-speed DC TIG pulse controls - Pulse frequency capable of pulsing 5000 pulses per second. Pulsing adds arc stability, reduces heat input and warpage and can increase travel speeds. Other parameters include peak amperage, peak time and background amperage.

Specifications

Processes

Pulsed TIG (GTAW-P)
Stick (SMAW)
TIG DC (GTAW-DC)
TIG (GTAW)

Technologies

Auto-Line
Auto-Set
Dynamic DIG

General Specifications

Title Maxstar® 400 208-600 V
Applications Advanced Welding
Industrial Welding
Process Pipe
Stainless Steel
Industries Construction and Fabrication
Material Thickness Steel 0.012 in. (0.3 mm) - 5/8 in. (15.9 mm)
Weldable Metals Stainless Steel
Steel
Current Type DC
Max Open Circuit Voltage 75 VDC
CACA Thickness 1/4 in
Amperage Min 3 A
Amperage Max 400 A
Welding Mode CC
Portability Lift Eye (Standard)
Running Gear / Cart (Optional)
Weld Output CC
Input Voltage 208 V
220/230/240 V
380/400 V
460/480 V
575/600 V
Input Phase 1- and 3-Phase
Input Hz 50/60 Hz
Net Width 13.9 in
Net Height 24.1 in
Net Length 24.3 in
Net Weight 126 lbs
Warranty 3 Years
Miller's True Blue Warranty

Accessories

Weldcraft™ W-375 Super Cool™ Torch Kit and Accessories

The W-375 Super Cool™ is a reliable water-cooled torch designed for demanding, high amperage applications. The W-375 Super Cool is engineered with innovative technology and welding efficiency in mind.
Water-Cooled Torch 1-Piece Power Cable Connectors

50 mm Dinse-style
Wireless Remote Foot Control 301580
Wireless Foot Control

Save your business time and money and improve workspace safety and efficiency with wireless foot controls. With fewer cables to manage, wireless foot controls offer unmatched flexibility in your operation and give you ultimate control of your amperage.
Push Button Fingertip Control, Single, 14-pin plug

26.5 ft. (8 m) cord with 14-pin plug. Momentary-contact switch for on/off control.

Consumables

Low-Conductivity Antifreeze/Coolant

Weldcraft™ 2% Lanthanated Tungsten, 3/32 in. x 7 in. (2.4 mm x 175 mm)

Weldcraft™ Tungsten, 2% Ceriated, 3/32 in. x 7 in. (2.4 mm x 175 mm)

Resources

Literature

Pulse DC TIG Welding and QuietPulse Technology
TIG Product Guide

Videos

Wireless Foot Controls Save Time and Money in TIG Welding
Wired foot controls have many costly downsides. Learn how wireless foot controls deliver savings and improve quality.
Miller Shop Talk Live TIG Tips and Techniques
Become a TIG welding pro! Andrew Pfaller will cover TIG Welding Setup, AC/DC Basics, Torch and Filler Handling, and...

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Reviews & Ratings

Question & Answers