Miller Maxstar 400 Wireless Complete TIG Runner Package

Precision DC TIG & Stick Welding Performance

The Miller Maxstar® 400 Wireless Foot Control Complete (951874) represents the pinnacle of DC TIG welding technology, engineered for industries requiring exacting standards such as aerospace, petrochemical, and precision fabrication. This package is centered around the Maxstar 400, an inverter-based power source that delivers superior arc performance on steel, stainless steel, and specialty metals. The machine features high-speed DC TIG pulse controls capable of up to 5000 pulses per second. Pulsing increases arc stability, reduces heat input and warpage, and allows for faster travel speeds—critical factors when working with thin or heat-sensitive materials.

One of the standout technical features is the Blue Lightning™ High Frequency Arc Starter, which provides more consistent non-contact starts compared to traditional HF starters, ensuring contamination-free weld initiation. For Stick welding, the unit offers Tailored Arc Control (DIG) to adjust arc characteristics for specific electrodes, such as smooth-running 7018 or penetrating 6010. The Hot Start™ adaptive control ensures positive arc starts without sticking, enhancing productivity and weld quality.

The "Complete" nature of this SKU (951874) means it is equipped for immediate, high-duty cycle operation. It includes the Coolmate™ 3.5 water cooler powered by the integrated Cooler Power Supply (CPS) receptacle on the machine. This dedicated 120V receptacle activates the cooler only when the welder is on, preventing torch failure and saving energy. The Wireless Foot Control improves responsiveness and eliminates cord maintenance, a common failure point in busy shops. With a wide input voltage range (208-575 V) handled automatically by Auto-Line technology, this machine is a robust solution for dirty or unreliable power grids often found in industrial settings.

Technical Specifications & Benefits

• High-Speed Pulsing: Up to 5000 PPS for reduced heat input and improved arc stability.
• Auto-Line™ Technology: Seamless hookup to 208–575 V, 1- or 3-phase power.
• Blue Lightning™ HF: Reliable, non-contact arc starting.
• Program Memory: 9 independent memory slots to save and recall parameters.
• Meter Calibration: Allows digital meters to be calibrated for certification requirements.