Description
The new Miller Syncrowave 400 - 951831 is a game - changer for fabricators seeking higher TIG welding productivity and lower operating costs. This energy - efficient TIG welding power source allows welders to complete more work with ease.
User - Friendly Design
The intuitive user interface is a breeze to understand, enabling quick parameter adjustment. This means less time spent training new employees and more work getting done.
Pro - Set Feature
Forget the guesswork when setting TIG weld parameters. A single touch gives you preset controls for speed, convenience, and confidence.
Auto - Link Function
The circuit automatically connects the power source to the primary voltage (208/240/480 V, single or three - phase).
Compact and Portable
With a smaller footprint and lighter weight, these machines are easy to move around, improving workplace conditions.
Simple Installation
It accepts either single or three - phase input power, making setup a snap.
Energy - Saving
Save up to 33% on energy costs compared to outdated welding power sources.
Superior Arc Performance
It delivers more stable arcs and better arc - starting characteristics, helping welders work more efficiently and produce better results.
Available Processes
- Stick
- TIG DC
- TIG AC
- Pulsed TIG
The Miller Syncrowave 400 - 951000004 comes with a 3 - year True Blue Miller Warranty. Note that it does not come with an input power plug installed.
Included with Product
- Miller Syncrowave 400 AC/DC TIG Power Source
- Miller Coolmate 3S
- Weldcraft W - 375 Torch Kit and Accessories
- Miller Coolant - 043810
- Miller Foot Control
Specifications
Click the image below to view full spec sheet
Accessories

Using the Miller Syncrowave 400 is quite straightforward. First, connect it to the appropriate primary voltage (it can handle 208/240/480 V, single or three - phase). Since it doesn't come with an input power plug, you'll need to install one according to your power source. Then, use the intuitive user interface to adjust the welding parameters. If you're not sure about the settings, use the Pro - Set feature for preset controls. When you start welding, you'll notice the stable arcs and good arc - starting characteristics, which make the job easier. Remember, this machine is energy - efficient, so you'll save on power costs. As for maintenance, keep it clean and check the coolant regularly, especially if you're using the Miller Coolant - 043810 that comes with the package. The Miller Syncrowave 400 has a 3 - year warranty, so if you encounter any major issues, contact the manufacturer. Also, make sure to store it in a dry and clean place when not in use. And since it's a relatively small and light machine, moving it around your workspace is easy, but handle it with care to avoid any damage.