Miller Maxstar 400 DC TIG Welder – 3-400A Amp Range, P/N 951874

The complete Miller Maxstar 400 DC TIG welder package (P/N 951874) solves shop floor cord clutter through wireless remote foot control and closed-loop liquid cooling. Traditional wired foot pedals get tangled under workbenches and suffer cord crushing from rolling carts and steel off-cuts. This flagship industrial package equips your shop with the 400-amp Auto-Line inverter powerhead, a wireless foot pedal remote, a Coolmate 3.5 water cooler, a water-cooled torch kit, and a four-wheel cylinder cart.

The wireless foot control operates up to ninety feet away from the power source without signal latency or interference, allowing welders to move freely around large stainless vessels. Auto-Line technology accepts primary electrical service from 208 to 575 volts across single-phase or three-phase drops, maintaining constant arc voltage during heavy plant power fluctuations. Full high-speed pulsing up to 500 Hz allows you to concentrate heat into narrow root joints on thick stainless process pipe and heavy structural plate.

Engine Architecture of Miller Maxstar 400 (P/N 951874)

- Complete Wireless Water-Cooled Package: Bundles Maxstar 400, wireless foot pedal, Coolmate 3.5 cooler, water torch kit, and cart.
- Wireless Foot Pedal Remote Control: Delivers stepless amperage control up to 90 feet away without fragile floor cords.
- 3-400A Precision DC Output Range: Produces stable low-amperage arcs down to 3 amps for micro repairs up to 1/2-inch plate.
- Coolmate 3.5 Industrial Water Cooler: Circulates coolant through torch leads to eliminate torch handle heat rise during long shifts.
- Rated 400A Output at 100% Duty Cycle: Maintains non-stop high-deposition welding on heavy stainless and carbon steel.
- Auto-Line 208V to 575V Power Sensing: Runs on any jobsite power source without changing internal mechanical jumpers.
- Wind Tunnel Component Protection: Protects internal circuit boards from airborne metal shavings by directing air through a central duct.

Commercial Utility Stamina & Lifespan

Engineered for high-precision aerospace, motorsport, and heavy naval manufacturing, this wireless TIG package maximizes welder comfort and puddle control.

- Wireless foot pedal eliminates cord tripping hazards and stops expensive pedal cable replacements caused by rolling shop carts.
- Auto-Line universal voltage sensing eliminates factory rewiring costs, allowing immediate plug-in on any electrical service.
- High-capacity Coolmate 3.5 water cooler keeps torch handle temperatures cold, extending consumable life during continuous full-shift welding.

Chassis Integration & Industrial Fitment

Weighing 195 pounds complete with water cooler and running gear, this mobile industrial station rolls over shop floor grates on large rubber tires.

Commercial Warranty & Field Maintenance

- Miller Electric backs the Maxstar 400 powerhead and Coolmate 3.5 water cooler with a 3-Year True Blue warranty.
- The wireless foot pedal remote assembly and water-cooled torch receive 1-Year manufacturer warranty protection.

Execute tungsten sharpening on dedicated diamond grinding wheels, blow compressed air through the powerhead cooling tunnels every 100 hours, and replace wireless foot pedal batteries annually. Order the Miller Maxstar 400 DC TIG welder from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.