Miller Electric


Home » Products » MIG » Millermatic® 350P MIG Welder

Millermatic® 350P MIG Welder

First single- or three-phase power Millermatic that welds material from 22 gauge to 1/2 in. thick in a single pass. Perfect for fabrication, manufacturing, maintenance and repair.

Millermatic 350P
  • Millermatic 350P
  • Millermatic 350P Front Panel
  • Millermatic 350P Inside
Base Model Starting at:
$5,485.00 List Price (US$)

Additional Models and Pricing

Spec Sheet (ENG)

Pulsed-MIG Advantage

Whether welding aluminum, steel or stainless steel, improving productivity by 30, 50 or 100% and saving tens of thousands of dollars are typical results when switching to Pulsed-MIG with the Millermatic 350P.

Aluminum Pulse Hot Start

Automatically provides more arc power to eliminate a "cold start" that is inherent with aluminum starts.


Optimizes the size and shape of the arc cone, bead width and appearance and puddle fluidity.

Line Voltage Compensation (LVC)

Line Voltage Compensation keeps output of the power source constant regardless of fluctuation in input power ± 10%.

Millermatic 350P Autobody Aluminum Package

The automotive industry is trending to aluminum frames and body panels to improve performance and fuel mileage. Welding thin gauge aluminum creates problems with warping, distortion and burn through. The new Millermatic 350P Autobody Aluminum Package makes it easy to setup, use and make quality aluminum repairs. Learn more >>


Miller's Gun-On-Demand feature allows you to use either a standard MIG gun, a Spoolmatic 15/30A spool gun or any other Miller push-pull gun without flipping a switch. The machine senses which gun you are using when you pull the trigger.


The Fan-On-Demand Cooling system only operates when needed, reducing power consumption and keeping internal components cleaner.



Stock #

XMT® 350 VS ArcReach™ 907224002

XMT® 450 VS ArcReach™ 907481002

SuitCase® X-TREME™ 8VS ArcReach™ with Bernard® S-Gun™ 951588

SuitCase® X-TREME™ 8VS ArcReach™ with Bernard® Q300 Gun 951584

SuitCase® X-TREME™ 12VS ArcReach™ with Bernard® S-Gun™ 951589

SuitCase® X-TREME™ 12VS ArcReach™ with Bernard® Q300 Gun 951581

Product Literature
Spec Sheet (ENG)
Aluminum Systems Brochure
ProcessesMIG (GMAW) 
Pulsed MIG (GMAW-P) 
Flux Cored (FCAW) 
Material Type
Max 1/2 in (13 mm)
Mild Steel
Min 24 ga (0.8 mm)
Max 1/2 in (13 mm)
Min 18 ga (1.2 mm)
* w/XR-Aluma-Pro™ Push/Pull Gun
General specificationsInput 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 Weight181 lb (82 kg)
WireDiameter Capacity
.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)
ApplicationsAluminum Welding 
Farm and Ranch 
Field Maintenance and Repair 
Spool Gun Option SPOOLMATIC-30A See Spool Gun Hook-up Chart


Stock # Manufacturer List Price US$    
  Millermatic 350P 200/230/460V 60Hz 1/3Ph  907300 $5,485.00  
  View Package Details      
  View Package Details      
  Comes Complete With:  
  Millermatic 350P power source  
  Bernard® Q300 15 ft (4.6 m) MIG gun with extra Centerfire™ contact tips
10 ft (3 m) Industrial power cord (without plug) for single- or three-phase
10 ft (3 m) work cable with clamp
Factory-installed gas solenoid
Argon mix regulator/flow meter
Factory-installed, low-mounted running gear/cylinder rack
.035/.045 in (0.9/1.2 mm) reversible V-groove drive rolls (order U-groove drive roll kits for aluminum welding)
  Millermatic 350P Autobody Package  907300002 $5,585.00  
  View Package Details      
  View Package Details      
  Comes Complete With:  
  Millermatic 350P - Improved low end .047 5xxx pulse program reduces the heat input to prevent warping and burn through on thin gauge aluminum auto body panels.  
  Premium Hobart .047 5554 Aluminum Welding Wire - An 8" spool (5 lbs) of .047 5554 aluminum wire which is spec'ed for making aluminum autobody repairs.  
  Customized Bernard Aluminum MIG Gun - Bernard 12 ft. Q200 MIG Gun with plastic liner & 30 degree Head Tube for superior aluminum wire delivery.  
  .047 U-Grooved drive Rolls  

Most Popular Accessories

Stock# Manufacturer List Price US$

Powerline Financing