Miller XMT 400 ArcReach Multiprocess Welder, RMD/Pulse System, Smart Feeder
The Miller XMT 400 ArcReach Multiprocess Welder RMD/Pulse System pairs the power source with an ArcReach Smart Feeder, drive rolls and a Bernard PipeWorx 300-15 MIG gun. It runs traditional MIG and flux-cored processes plus RMD and pulse programs, and operators can weld up to 200 feet from the power source without extra cables.
Behind the feeder, the XMT 400 offers Auto-Line hookup from 208-575 V on single- or three-phase power, and Cable Length Compensation offsets the voltage drop of long weld cables. Regulated Metal Deposition (RMD) and pulsed MIG (GMAW) are fully supported on field jobs for quicker, more efficient welding, and Auto Remote Sense switches to remote control when a remote is plugged into the remote control receptacle.
The power source covers 15-425 A and 10-38 V, weighs 75 lbs and measures 17.25 in. high, 12.75 in. wide and 20.25 in. deep in a lightweight aerospace-grade aluminum case. Adaptive Hot Start, Lift-Arc, infinite arc control, fan-on-demand cooling, large dual digital meters and a process selector switch complete the feature set of the power source.
Highlights
Package adds an ArcReach Smart Feeder, drive rolls and a Bernard PipeWorx 300-15 MIG gun
Standard MIG and flux-cored plus RMD and pulse programs
Working distance of up to 200 feet from the power source, no added cables
Auto-Line hookup for 208-575 V, 1 or 3 phase; Cable Length Compensation
Power source: 15-425 A, 10-38 V, 75 lbs
Adaptive Hot Start, infinite arc control, Lift-Arc and fan-on-demand
Specifications
Brand | Miller |
Manufacturer part number | 951000112 |
Input power | Auto-Line, 208-575 V, 1 or 3 phase |
Amperage range | 15-425 A |
Voltage range | 10-38 V |
Weight | 75 lbs (power source) |
Dimensions (H x W x D) | 17.25 in. H x 12.75 in. W x 20.25 in. D |
Processes | MIG, flux-cored, RMD, pulsed MIG |
Feeder | ArcReach Smart Feeder with drive rolls |
MIG gun | Bernard PipeWorx 300-15 |
Working distance | Up to 200 ft from the power source |
Case | Lightweight, aerospace-grade aluminum |
What's in the box
XMT 400 ArcReach power source
ArcReach Smart Feeder with drive rolls
Bernard PipeWorx 300-15 MIG gun
Good to know
Check the input power (voltage, phase and amperage) against your supply before you order.




