Millermatic® 350P Aluminum MIG Welder - MillerWelds

Millermatic 350P Aluminum 200/230/460 V, Standard Unit

First single- or three-phase power Millermatic that's optimized to weld aluminum. Perfect for fabrication, manufacturing, maintenance and repair.
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What's Included

  • Power source
  • 10-ft. (3 m) industrial power cord (without plug)
  • 10-ft. (3 m) work cable with clamp
  • Factory-installed gas solenoid
  • Smith® Argon mix regulator/flow gauge with hose
  • Factory-installed, low-mounted running gear/cylinder rack
  • .035 and .047-in. (0.9 and 1.2 mm) U-groove aluminum drive rolls
NEW! True Torque Feed Motor Push-Pull Design
The Millermatic 350P Aluminum features a torque feed push-pull motor that provides continuous push force to the wire while the gun motor controls the speed at the gun. The motors work together to provide accurate and positive wire feed speed without wire shaving or deformation.
NEW! Electronic Wire Spool Brake
Electronic wire spool brake allows the wire spool to free spool while welding. This provides optimum wire feed delivery. When the gun trigger is released the brake engages.
Synergic Pulse
Synergic pulsed welding mode offers the simplicity of single-knob control. The machine will select the correct pulse power based on the wire feed speed (WFS) set by the operator.  Learn more about synergic pulse mode >>  Learn More
NEW! Synergic MIG and One-Knob Control
Synergic MIG provides communication between power source, feeder and gun. As wire speed increases/decreases, the arc voltage also increases/decreases to maintain a constant welding arc. Synergic one-knob control allows you to set the wire feed speed control on the gun, which simplifies set-up and reduces training time. No need to travel back to the power source to change multiple parameters.
NEW! Trigger Schedule Select
Trigger schedule select (SCHD) allows the operator to select the alternative schedule by quickly tapping the gun trigger when not welding. Useful when switching between two welding parameters is needed.
NEW! Trigger Hold
Trigger hold allows the operator to release the trigger while making long continuous welds, reducing hand and finger fatigue.
NEW! Jog and Purge Feature
Jog and purge allow operator to jog the wire, or purge gas lines and preset gas pressure at the regulator before welding.
Auto Gun Detect
Direct connection for Miller 10-pin XR-Aluma-Pro™ and XR™ Pistol Grip air-cooled push-pull guns. With Auto Gun Detect, simply pull the trigger for the gun to be used and you’re ready to weld. Note: Not compatible with standard MIG guns.

Not Included

  • Shielding gas (for welding with solid wire [GMAW])
  • Welding wire
  • Personal safety products (helmet, gloves)
  • Your local welding distributor can provide shielding gas, additional welding wire and a full product offering.




General Specifications

Title Millermatic 350P Aluminum 200/230/460 V, Standard Unit
Industries Interests Auto / Cycle (Racing, Customizing, Restoring)
Farm and Ranch
Boat / Yacht
DIY / Home Hobbyist
Current Type DC
Input Hz 60 Hz
Input Phase 1- and 3-Phase
Portability Running Gear / Cart (Standard)
Net Height 34 in
Net Length 41 in
Input Voltage 208 V
220/230/240 V
460/480 V
Max Open Circuit Voltage 72 VDC
Net Weight 181 lbs
Weldable Metals Aluminum
Net Width 19 in
Warranty Miller's True Blue Warranty
Amperage Range 25 A - 400 A
Wire Feed Speed 1.3 m/min - 20 m/min
50 IPM - 20 m/min
1.3 m/min - 800 IPM
50 IPM - 800 IPM
Wire Diameter Aluminum 0.035 in 0.047 in
Aluminum 0.9 mm 1.2 mm
Rated Output 300 Amps at 32 VDC, 60% duty cycle, 60Hz, 1- or 3-Phase
Spool Size 12 in (305 mm)