Miller XMT® 400, Tweco® Multi-Process Welder - 907881001

Part Numbers: 907881001

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front right view of the Miller XMT® 400, Tweco® Multi-Process Welder - 907881001

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Miller XMT® 400, Tweco® Multi-Process Welder - 907881001

Part Numbers: 907881001

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XMT® 400 Tweco® Multi-Process Welder #907881001

The XMT® 400 is the newest member of the XMT family—built for nonstop shop work and backed by Miller’s proven reliability. Compatible with any Intellx™ wire feeder, it scales from core MIG/Stick/TIG to advanced pulsed capabilities (Accu-Pulse® with Intellx Pro; full advanced suite with Intellx Elite). A familiar, user-friendly interface makes setup fast so operators can stay in the zone all day.

Highlights

ArcConnect™: Next-gen communication improves weld performance and enables point-of-use controls.
Legacy meets pulse: Pulsed MIG-capable with Intellx Pro/Elite adds 28% wider window and forgiving arc.
Auto-Line™ Technology: Auto-Line™ auto-calibrates to 208–575 V, 1- or 3-phase, no manual linking needed.
Wind Tunnel Technology™: Internal airflow shields boards from dust and debris, boosting reliability.
Dedicated wire feeder options: Intellx Elite: new arc control. Intellx Pro: Accu-Pulse®, EZ-Set, memory buttons.
Fan-On-Demand™: Cooling system runs only when needed, cutting noise, energy, and contaminants.
Auto Remote Sense™: Unit detects and auto-uses remote when connected to control receptacle.
AccuLock S Consumables: Reduce tip changes and troubleshooting while boosting productivity and confidence.

Applications:

Construction and Fabrication
Heavy Equipment
Education & Training
Manufacturing
Pipe
Schools
Transportation

Specifications — XMT® 400
Brand	Miller Electric
Model	XMT 400
Processes	MIG (GMAW); Flux-cored (FCAW); Stick (SMAW); TIG (GTAW); Accu-Pulse® (GMAW-P); Versa-Pulse™ (GMAW-P); High-deposition MIG (GMAW); RMD® (Regulated Metal Deposition®); Air Carbon Arc Cutting and Gouging (CAC-A), rated up to 5/16 in. carbons
Current Type	DC
Input Power	Auto-Line™, 208–575 V; requires 1- or 3-phase power
Output Range	10–38 V, 15–425 A
Rated Output	Three-phase: 400 A at 36 VDC, 60% duty cycle Single-phase: 300 A at 32 VDC, 60% duty cycle
Amperage Range	5–425 A
Max Open-Circuit Voltage	91 VDC (25/12 VDC with VRD active)
Dimensions (H × W × D)	17.25 × 12.75 × 20.25 in. (438 × 324 × 514 mm)
Net Weight	75 lb. (34.0 kg)
Warranty	Power source: 3 years parts & labor; Main power rectifier: 5 years (parts); Gun: 90 days