The Professional Welder’s Choice — designed with the professional in mind, the Big Blue 400 Pro is the best for ease of use, reliability and fuel economy.

Superior arc performance

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

Simple-to-set controls require no elaborate procedure — just select process and weld!

Low OCV Stick (VRD) reduces the open-circuit voltage to 15 volts when the welding power source is not in use, increasing operator safety without compromising arc starts.

Auto Remote Sense™ (ARS) detects if a remote control is plugged into the 14-pin receptacle and eliminates confusion of a remote/panel switch.

Thermal overload protection prevents machine damage if the duty cycle is exceeded or airflow is blocked.

Standard features include digital preset weld meters, output contactor control, automatic idle and 120 V block heater.

Applications

• Stick (SMAW)
• MIG (GMAW)
• Flux Cored (FCAW)
• DC TIG (GTAW)
• Air Carbon Arc (CAC-A)
  Rated: 3/16-inch (4.8 mm) carbons,
  Capable: 1/4-inch (6.4 mm) carbons
• Air Plasma Cutting and Gouging with optional Spectrum® models

Technical Properties

Output Range	20–400 A (DC Stick) 20–400 A (DC TIG) 14–40 V (FCAW/MIG)
Generator Power Output Rated at 104̊ F (40̊ C)	12,000 Watts Peak 10,000 Watts Continuous

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