Miller Millermatic 355 Pulsed MIG Welder with XR-A Aluma-Pro Gun, 20-400A
The Miller Millermatic 355 Pulsed MIG Welding Package with XR-A Aluma-Pro Gun pairs the 355 power source with an XR-A Aluma-Pro gun. It runs MIG, flux-cored and pulsed MIG welding on single- or three-phase 208, 240, 460 or 575 V input, is rated 310 A at 29.5 V with a 60% duty cycle, and its wire range covers .035-.047 in. aluminum.
Output covers 20-400 A with 90 VDC maximum open-circuit voltage and 50-800 IPM (1.3-20 m/min) wire feed speed, and the input voltage selection switch sits in the wire drive compartment, with an error shown if the wrong input is selected. The 7-inch color LCD brings Auto-Set Elite, an electronic parameter chart and program mode, and Trigger Program Select changes programs with a tap of the gun trigger. Locks and Limits keep parameters within the welding procedure specification (WPS), and a USB port updates software and transfers programs.
This package adds the XR-A Aluma-Pro gun to the base Millermatic 355 kit: a 9 ft (2.7 m) industrial power cord, a 300-amp, 15 ft (4.5 m) Bernard BTB MIG gun fitted with AccuLock S consumables, a work cable and clamp with a 50 mm Dinse-style connector, a flow gauge regulator and gas hose, reversible drive rolls, extra contact tips and a material thickness gauge. The welder handles aluminum, stainless and mild steel up to 1/2 in. thick and reaches full output on generators of 19,000 watts or more.
Highlights
Package includes an XR-A Aluma-Pro gun
Rated 310 A at 29.5 V, 60% duty cycle; 20-400 A amperage range
Manual input voltage switch for 208, 240, 460 or 575 V, single- or three-phase
MIG, pulsed MIG (GMAW-P) and flux-cored; aluminum, stainless and mild steel up to 1/2 in. thick
7-inch color LCD with Auto-Set, electronic parameter chart and Trigger Program Select
USB port for software updates, settings backups and program transfers
Specifications
Brand | Miller |
Manufacturer part number | 951927 |
Processes | MIG (GMAW), pulsed MIG (GMAW-P), flux-cored |
Input voltage | 208, 240, 460, 575 V; 1- and 3-phase |
Rated output | 310 A at 29.5 V, 60% duty cycle |
Amperage range | 20-400 A |
Max open-circuit voltage | 90 VDC |
Wire feed speed | 50-800 IPM (1.3-20 m/min) |
Wire diameter | Aluminum .035-.047 in.; metal-core .045-.052 in.; stainless .023-.045 in.; solid steel and flux-cored .035-.045 in.; silicon bronze .030-.035 in. |
Spool size | 12 in. (305 mm) |
Material thickness | Mild steel 22 ga. (0.6 mm) to 1/2 in. (12.7 mm); aluminum 18 ga. (1.2 mm) to 1/2 in. (12.7 mm) |
Weldable metals | Steel, stainless steel, aluminum, specialty metals |
Generator | Full output at 19,000 W (19K) or higher |
Weight | 99 lbs |
Dimensions | 26.25 x 13.75 x 19.25 in. (L x W x H) |
Portability | Running gear / cart (optional) |
What's in the box
Millermatic 355 power source with 9 ft (2.7 m) industrial power cord
15 ft (4.5 m) 300-amp Bernard BTB MIG gun with Bernard AccuLock S consumables for .035/.045 in. (0.9/1.2 mm) 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/.045 in. (0.9/1.2 mm) reversible drive rolls
Extra .035 and .045 in. (0.9 and 1.2 mm) contact tips
Material thickness gauge
XR-A Aluma-Pro gun
Good to know
Check the input power (voltage, phase and amperage) against your supply before you order.


