Miller XMT 350

Auto-Line™ Power Management

Automatically compensates for various input Voltage. Suits jobsite and generator power. Keeps welding output constant even if input power varies by +/- 10%.

Wind Tunnel Technology™

Protects electrical components and PC boards from contamination.


The cooling system operates only when needed, reducing noise, energy use and the amount of contaminants pulled through the machine.


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.

Lightweight, Aerospace-Grade Aluminium Case

Offers heavy-duty protection with the benefit of reduced weight.

Inverter Arc Control Technology

Provides greater puddle control for superior 6010 Stick electrode performance, and outstanding MIG weld performance.

Process Selector Switch

Reduces the number of control setup combinations without reducing any features.

Large, Dual Digital Meters

Easy to view and can be pre-set.

Pulsed MIG (GMAW-P) Capabilities

With optional Optima™ control reduces spatter and distortion, allows better out-of-position puddle control, and provides potential reduction of fume particle emission.

VRD To CAT C AS 1674.2

Technical Data

Input Power: Single Phase / Three Phase

Rated Output: 350 A at 34 VDC 60% Duty cycle / 300 A at 32 VDC 60 % Duty Cylce

Voltage Range CV Mode: 10 - 38 V

Amperage mode in CC mode: 15 - 425 A

Input at rated load output 50 - 60 Hz:230V1P - 54.6 /400V 20.6-29.7 /kVA 14.2-11.7 / kw 13.6 - 11.2

Dimensions (mm): H 432 W 318 D 610

Weight: 36.3 kg

Applications and Processes


Repair Shops
Rental Fleets
Power Generation Plants


Pulsed MIG (GMAW-P)
Stick (SMAW)
Flux-Cored (FCAW)
Air Carbon Arc Cutting

and Gouging (CAC-A