Millermatic 350P/Aluma-Pro Package Pulsed Mig Welder 230/460Volt Part #951452

Part Number: 951452

Discontinued - Replaced by Millermatic 355 MIG/Pulsed Welder #907808

Out of Stock
$7,902.25 $10,092.00*
SAVE $2,189.75

Welding type:



Power supply:

220V Single Phase

220V Single Phase

220V 3 Phase

220V 3 Phase



Material type:

Mild Steel

Mild Steel

Stainless Steel

Stainless Steel



  •  Multi-Voltage
  •  Single Phase
  •  Three Phase
  •  1/2" Cut

Millermatic 350P MIG Welder #951452

FREE SHIPPING TO THE LOWER 48 states on purchases over $300

The Millermatic 350P MIG Welder/Aluma-Pro Package Pulsed MIG Welder is designed only for MIG welding work on aluminum. This 230/460Volt machine runs at a 60% duty cycle and is rated at 300 amps. It will weld up to 1/2" aluminum, and has ample power for most home and professional welding projects. By switching to Pulsed-MIG welding using the Millermatic 350P welder, you'll not only save money but also improve productivity by 30, 50, or 100%.

Millermatic 350P MIG Welder Features:

  • Aluminum Pulse Hot Start – Automatically provides more arc power, eliminating the “cold start” typically inherent with aluminum starts.
  • SharpArc – Optimizes the size and shape of the arc cone, bead width, appearance, and puddle fluidity.
  • Line Voltage Compensation (LVC) – Keeps output of the power source constant regardless of fluctuation in the input power +/- 10%.
  • Gun-On-Demand – Allows you to use either a standard MIG gun, a Spoolmatic 15/30A spool gun, or any other Miller push-pull gun without flipping the switch. The welding machine automatically senses which gun you are using when you pull the trigger.
  • Fan-On-Demand Cooling System- Only operates when needed, reducing the power consumption and keeping the internal components cleaner to provide less maintenance needs.


  • Aluminum Welding
  • Fabrication
  • Farm and Ranch
  • Field Maintenance and Repair
  • Manufacturing
  • Schools/Training
For the best price on Miller welding machines, MIG welders, and welding machine accessories, shop Welders Supply.

General Specifications

Input Power Requires 1- or 3-Phase power
Rated Output 300 Amps at 32 VDC, 60% duty cycle, 1- or 3-Phase
Welding Amperage Range 25 - 400 Amps
Wire Speed 50 - 700 IPM (1.3 - 17.8 m/min)
Net Weight 181 lb (82 kg)
Wire Diameter
.023 - .045 in (0.6 - 1.2 mm) Solid Steel
.030 - .045 in (0.8 - 1.2 mm) Stainless
.035 - .047 in (0.9 - 1.2 mm) Aluminum
.035 - .052 in (0.9 - 1.3 mm) Metal-Core
.030 - .052 in (0.8 - 1.3 mm) Flux Cored
MaxSpoolSize Capacity 12 in (305 mm)


Height: 30.00 Inches
Width: 36.00 Inches
Length: 42.00 Inches
Weight: 230 Lb(s) 0 Oz

Product Questions and Answers

Q - What is the amperage range? A - 25 to 400 A
Q - How fast does it feed wire? A - 50 to 800 imp with Push-Pull Gun

How to install gas supply:

  1. Secure gas cylinder.

    Obtain gas cylinder and chain to running gear, wall, or other stationary support so cylinder cannot fall and break off valve.

  2. Remove cap.

    Remove cap, stand to side of valve, and open valve slightly. Gas flow blows dust and dirt from valve. Close valve.

  3. Connect supplied gas hose.

    Connect supplied gas hose between regulator/flowmeter gas hose connection, and fitting on rear of welding power source.

  4. Adjust flow.

    Typical flow rate is 30 to 35 cfh (cubic feet per hour). Check wire manufacturer’s recommended flow rate.

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