XMT Series

MILLER
XMT Series
XMT Series
XMT Series

Wind Tunnel Technology™ protects electrical components and PC boards from contamination.

Fan-On-Demand™ cooling system operates only when needed, reducing noise, energy use and the amount of contaminants pulled through machine.

Lift-Arc™ allows TIG starting without the use of high-frequency. Starts the arc without contaminating the weld with tungsten.

Adaptive Hot Start™ increases the output amperage at the start of a weld if necessary, eliminating electrode sticking.

115 VAC auxiliary power provides 10 amps of circuit-breaker-protected power for water circulators, etc. Standard on XMT 456, optional on XMT 304 and XMT 350 CC/CV models only.

Lightweight, aerospace-grade aluminum case offers protection with the benefit of reduced weight.

Inverter arc control technology provides greater puddle control for superior 6010 Stick electrode performance.

Line voltage compensation keeps power constant even if power input varies by ±10%

Process selector switch reduces the number of control setup combinations without reducing any features.

Large, dual digital meters are easy to view and are presettable to ease setting weld output.

Pulsed MIG capabilities with optional Optima control reduces spatter and distortion, allows better out-of-position puddle control, and provides potential reduction of fume particle emission


  • MMA
  • TIG
  • Pulsed TIG
  • Flux Cored
  • Air Carbon Arc Cutting and Gouging
Input Power 304/350:Requires 3- or 1-Phase Power

456:Requires 3-Phase Power

Output Power 304:10–35 V, 5–400 A
350:10–38 V, 5–425 A
456:10–38 V, 5–600 A
Weight 304:Net: 79.5 lb.(36.1 kg) Ship:88.6 lb.(40.2 kg)

350:Net: 80 lb.(36.3 kg) Ship:89.1 lb.(40.4 kg)

456:Net: 118 lb.(53.5 kg) Ship:129 lb.(58.5 kg)

XMT 304
XMT 304
XMT 350
XMT 350
XMT 350 FieldPro
XMT 350 FieldPro
XMT 450
XMT 450