951692 - Miller Maxstar 400 DC TIG/Stick Welder Package

Industrial-Grade DC TIG and Stick Performance

The Miller Maxstar 400 is a premier solution for heavy-industrial DC TIG and Stick welding applications. Engineered for precision fabrication, pipe welding, and manufacturing, this machine delivers exceptional arc characteristics tailored for exotic materials and critical welds. At the core of its versatility is the Auto-Line™ Power Management Technology, which allows for seamless connection to any input voltage ranging from 208 to 575 V, single- or three-phase, without the need for manual linking mechanisms. This feature ensures consistent performance even in facilities with dirty or unreliable power, making it a robust choice for varied job site conditions.

Technically, the Maxstar 400 excels with its high-speed DC TIG pulse controls. Capable of pulsing up to 5000 pulses per second, the system provides enhanced arc stability, reduced heat input, and minimized distortion—critical factors when welding thin-gauge or heat-sensitive alloys. The machine also features Blue Lightning™ High Frequency Arc Starter technology, which utilizes specific starting parameters to ensure consistent, non-contact arc initiation, eliminating tungsten contamination and reducing downtime. For Stick welding operations, the unit includes Hot Start™ adaptive control for positive arc starts without sticking, and DIG control, which allows operators to adjust arc characteristics from smooth (for 7018 electrodes) to stiff and penetrating (for 6010 electrodes).

Operational efficiency is further boosted by the Cooler-On-Demand™ feature, which activates the auxiliary cooling system only when necessary, thereby reducing airborne contaminants drawn through the cooler, lowering noise levels, and conserving energy. The integrated Cooler Power Supply (CPS) provides a dedicated 120-volt receptacle for the Coolmate™ 3.5, ensuring the cooling system powers up in sync with the welder to prevent torch failure. With 9 independent program memories, operators can save and recall complex parameters instantly, ensuring repeatability across shifts. The front panel also houses a memory card data port, enabling easy software upgrades and feature expansions as Miller releases new technologies.