Miller Big Blue® 400 Pro (CAT) #907774

Part Numbers: 907774
1 Review
$24,024.00* Save $3,225.00

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    Welding type:







    Engine Driven

    Engine Driven

    Material type:

    Mild Steel

    Mild Steel

    Stainless Steel

    Stainless Steel



    • Multi-Process
    • Multi-Phase
    • Engine Driven
    • 3-Year Warranty

    Miller Big Blue® 400 Pro (CAT) #907774

    Designed with the professional in mind, the Big Blue 400 Pro is the best for ease of use, reliability, and fuel economy.

    Miller Big Blue 400 #907774Features:

    NEW Heavy-Duty Low-Speed CAT Industrial Diesel Engine

    • With the reliability you expect from Miller, the CAT C1.5T turbocharged three-cylinder, liquid-cooled, industrial diesel engine is backed by world-class support and service through the global CAT dealer network

    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

    Superior Arc Performance

    Four preset DIG settings:
    • (Stick) Hot Start™
    • (Stick) Lift-Arc™
    • TIG with Auto-Stop™
    • Crater-out MIG/FCAW arc performance

    Quiet Operation

    • Improves work site safety and communication

    Simple-to-Set Controls

    • Requires no elaborate procedure - just select process and weld!

    Auto Remote Sense™ (ARS)

    • Detects if remote control is plugged into the 14-pin receptacle and eliminates the confusion of a remote/panel switch

    Thermal Overload Protection

    • Prevents machine damage if the duty cycle is exceeded or airflow is blocked

    Meter Maintenance Displays

    • Fuel gauge
    • Hour meter function
    • Oil change interval
    • High coolant temperature and low oil pressure shutdowns
    • Low fuel shutdown - engine shuts down before system runs out of fuel, making restarts easy.

    Other Standard Features

    • Digital preset weld meters, output contactor control, and automatic idle
    Check out a full selection of MIG, TIG, Stick, and Gas welders available at Welder's Supply.

    Miller Big Blue® 400 Pro (CAT) Specifications:

    Industries Interests

    Cross Country Pipeline
    Pipe Fabrication / Construction
    Mechanical Contracting
    Mechanical Contracting

    • Air Carbon Arc Cutting and Gouging (CAC-A)
    • Flux Cored (FCAW)
    • MIG (GMAW)
    • Stick (SMAW)
    • TIG DC (GTAW-DC)
    Engine Brand



    Lift Eye (Standard)
    Trailer (Optional)

    Net Width

    26.5 in

    Net Height

    32 in

    Net Length

    56 in

    Net Weight

    1010 lbs


    3 Years
    Miller's True Blue Warranty

    Manufacturer Reviews

    By: They call me aka the moose
    I started my welding bissness back when I was 19 started out with the Miller bob cat 225 then moved up to the Miller trailblazer 302 had it for all most 16 years and the motor spun a rod bearing. So know iam move up to a big blue 400 x pro looking forward to working with this machine for the next 20 years or till I retire once I take delivery of the unit and have it wrapped with my logo I will put it on the Miller website so everybody can see

    Product Questions and Answers

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