Miller XMT 450

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 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.

Large, Dual Digital Meters

Easy to view and can be pre-set.

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.

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.

Line Voltage Compensation

Keeps welding output constant even if input power varies by ±10%. Line Voltage compensation further expands to an amazing +37/-59% when operating on 460 VAC.

VRD TO CAT C AS 1674.2

Technical Data

Input Power:  Three Phase

Rated Output:  450 A at 38 VDC 100 % Duty Cylce

Voltage Range CV Mode: 10 - 38 V

Amperage mode in CC mode: 15 - 600 A

Input at rated load output 50 - 60 Hz:400V3P - 27.6 /kVA 22 / kw 18.9

Dimensions (mm): H 438 W 368 D 689

Weight: 55.3 kg

Applications and Processes


Repair Shops
Rental Fleets
Power Generation Plants
MIG (GMAW)/Pulsed
Stick (SMAW)
Flux Cored (FCAW)
Air Carbon Arc Cutting
and Gouging (CAC-A)