Designed with the professional in mind, the Big Blue 400 Pro is the best for ease of use, reliability and fuel economy.
Heavy-Duty Low-Speed Mitsubishi S4L2 Industrial Diesel Engine
Used in industrial applications around the world, the S4L2 is designed to run 10,000 hours before major overhaul. Backed by worldwide support and service.
Dynamic DIG™
Unlike conventional DIG that provides a preset amount of short-clearing current, Miller’s proprietary Dynamic DIG works on a time-based algorithm that automatically adjusts the amount of current required to clear a short. What does this mean? A smoother more consistent arc that can be tailored to match application, material, fit-up, and welder technique.
Industrial USB Port
Quickly upload the latest software and download machine log files to retrieve in-depth information such as diagnostics and machine statistics.
Digital Meters with SunVision™
Enables welding parameters to be viewed with greater clarity at virtually any angle. Meters can be seen clearly even in direct sunlight.
Auto Remote Sense™ (ARS)
Detects if a remote control is plugged into the 14-pin receptacle and eliminates confusion of a remote/panel switch.
Simple-to-Set Controls
Requires no elaborate procedure - just select process and weld.