XMT® 400 | Miller Welds | MillerWelds

New XMT® 400

Built to conquer the unexpected.

Stay in the Zone All Day With a Workhorse Multiprocess Welder

The new XMT® 400 doesn’t just keep up — it levels up. Designed for today’s overloaded welders, it’s a major evolution of the XMT family that delivers power and simplicity without the learning curve. Intellx™ wire feeder compatibility can unlock a suite of solutions that scale with your welding operation to keep you confident when unexpected challenges arise. And backed by unwavering Miller reliability, it’s simpler than the competition and supported long after the sale.

The Features You Need With the Enhancements You Want

XMT® Family Features:


The benefits of all XMT machines you know you can count on.

  • Multiprocess
  • 14-pin compatible
  • Auto-Line™
  • Pulse process* 
  • Intuitive interface
  • Legendary reliability

*When paired with Intellx™ Pro

What's New:


The benefits that put the XMT® 400 in a league of its own.

  • Adaptable to your environment 
  • ArcConnect compatible
  • 400 amps at 60% duty cycle
  • Advanced processes**
  • Reduced maintenance and repair costs

**When paired with Intellx™ Elite

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Solutions That Scale With Your Operation's Needs

This is the first XMT power source with Intellx wire feeder compatibility, making it a powerful tool for boosting performance and maximizing efficiency when the shop gets busy.

When used with various Intellx feeders, the XMT 400 gains access to different welding capabilities. See which feeder is the right fit for your operation.

Features Intellx™ Basic Intellx™ Pro Intellx™ Elite
Arc Control
EZ-Set
Accu-Pulse®
Versa-Pulse™
Regulated Metal Deposition (RMD®)
High-Deposition (HD) MIG
Features Intellx™ Basic Intellx™ Pro Intellx™ Elite
Arc Control
EZ-Set
Accu-Pulse®
Versa-Pulse™
Regulated Metal Deposition (RMD®)
High-Deposition (HD) MIG
Features Intellx™ Basic Intellx™ Pro Intellx™ Elite
Arc Control
EZ-Set
Accu-Pulse®
Versa-Pulse™
Regulated Metal Deposition (RMD®)
High-Deposition (HD) MIG

Explore Intellx™ FeedersDiscover Advanced Processes

Explore the XMT® 400 Product Lineup

XMT 400 multiprocess welder

XMT® 400

A multiprocess power source that delivers 400 amps at 60% duty cycle. Includes Dinse-style connectors and Auto-Line.

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XMT 400 MIGRunner Package with Intellx Pro wirefeeder, cart and other accessories

XMT® 400 MIGRunner™ Package

A setup that includes the XMT 400 power source, Intellx Pro wire feeder, MIGRunner cart and various accessories that enable ArcConnect.

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Resources to Keep You Moving Forward

If you need to compare machines to find the best fit for your operation, we’ve got you covered.

Article thumbnail featuring a welder in the background, with the title 'Which XMT Is Right for Me' prominently displayed.

Which XMT Is Right for Me?

Discover which XMT® power source best fits your jobsite, workflow and application needs with this comparison guide.

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