Miller Millermatic 355 MIG Welder 208/240/460/575V W/XR-A Aluma-Pro 951927

In stock - 12 items available
SKU: 951927
Regular price $10,599.00 USD

Easy to use machine to increase efficiency and productivity for manufacturing and fabrication users. 7" Color LCD screen featuring Auto-Set™ Elite, Electronic Parameter chart, and Trigger Program Select. This all-in-one welder connects to any North American input power. Welds up to 1/2” aluminum, stainless and mild steel. 


  • Power source with 9 ft. (2.7 m) industrial power cord 

  • 25 ft. (7.6 m) XR-Aluma-Pro air-cooled push-pull MIG gun with Miller FasTip consumables for .035/.047 in. (0.9/1.2 mm) aluminum wire 

  • 10 ft. (3 m) work cable with clamp and 50 mm Dinse-style connector 

  • Flow gauge regulator and gas hose for argon or AR/CO2 mix 

  • .035/.047 in. (0.9-1.2mm) reversible U-Grooved drive rolls 

  • Extra .035 and .045 in. (0.9 and 1.2 mm) contact tips 

  • Material Thickness Gauge 

  • EZ-Latch™ Running Gear 

  • Chain to secure gas cylinder 


Easy-to-understand interface 

7-inch color LCD display ensures proper machine setup and parameter selection, reducing setup time and increasing weld time 


Pulsed MIG welding delivers higher quality 

Lower heat input for less distortion on thin materials, less spatter minimizes post weld grinding and rework allowing more welding time. Perform welding applications that couldn’t be done in the past. 


Auto-Set™ Elite 

offers predefined weld settings to increase ease of use and ensure that the job is done right for operators of all skill levels. 


Program mode allows easy save and recall of favorite weld settings. 

Deliver more productivity, consistent quality by welders of all skill levels by using prequalified weld settings. Minimize supervisor need to intervene. 

Trigger Program Select 

Increases productivity by eliminating the need to go back to the machine to change weld settings. Simply tap gun trigger to select the program. 



Capabilities include MIG, pulsed MIG and flux-cored welding. 

XR-Aluma-Pro air-cooled push-pull MIG gun with FasTip™ consumables 

New lighter XR-Aluma-Pro guns reduce fatigue, improve output and are rugged to withstand industrial environments. 


Portability - Machine only weighs 99 lb 

Weight is reduced by more than 40 percent compared to the Millermatic 350P. 


EZ-Latch™ running gear 

Operators no longer need to use lift truck to load machine and running gear into the truck. Latches secure machine to running gear. Simply loosen the latch retaining knob and rotate latches to disengage machine from running gear for easy portability. 


Input Voltage Selection Switch 

Provides versatility to utilize any single- or three-phase North American power (208, 240, 460, 575 V). Location in the wire drive compartment provides the ability to manually switch input voltage. An error will display if wrong input selected. 


Generator Compatible 

The Millermatic 355 will be able to operate and provide full output when powered by generators with 19000 Watt (19K) output or higher. Limited output will occur when used with smaller generators. 



Pulsed MIG (GMAW-P) 



Millermatic® 355 W/XR-A Aluma-Pro 25' 208/240/460/575V, EZ-Latch 

Industries Interests 

Commercial Truck and Trailer 
Construction / Fabrication 
Education / Training 
Maintenance and Repair - In Plant 


20 A - 400 A 

Material Thickness 

Aluminum 18 ga. (1.2 mm) - 1/2 in. (12.7 mm) 
Mild Steel 22 ga. (0.6 mm) - 1/2 in. (12.7 mm) 

Weldable Metals 

Specialty Metals 
Stainless Steel 

Input Voltage 

208 V 
220/230/240 V 
460 V 
575 V 

Input Phase 

1- and 3-Phase 

Current Type 


Max Open Circuit Voltage 

90 VDC 

Wire Feed Speed 

1.3 m/min - 20 m/min 
50 IPM - 800 IPM 

Wire Diameter 

Aluminum 0.035 in. - 0.047 in. 
Aluminum 0.9 mm. - 1.2 mm. 
Metal-Core 1.2 mm. - 1.3 mm. 
Metal-Core 0.045 in. - 0.052 in. 
Stainless 0.023 in. - 0.045 in. 
Stainless 0.6 mm. - 1.2 mm. 
Solid Steel 0.9 mm. - 1.2 mm. 
Solid Steel 0.035 in. - 0.045 in. 
Flux Cored 0.035 in. - 0.045 in. 
Flux Cored 0.9 mm. - 1.2 mm. 
Silicon Bronze 0.030 in. - 0.035 in. 
Silicon Bronze 0.8 mm - 0.9 mm. 

Spool Size 

12 in. (305 mm) 


Running Gear / Cart (Standard) 

Weld Output 


Net Width 

13.75 in 

Net Height 

32 in 

Net Length 

45 in 

Net Weight 

99 lbs