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Firepower 1444-0870 MST 140i 3-In-1 Mig / Stick and Tig Welding System

Your Price: $762.98
In Stock.
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Part Number:FPW1444-0870

Features and Benefits:


This machine features MIG, Stick, and TIG processes in a unit that weighs 33 pounds. Farms/Ranches, auto-applications or on-site repair work are just some of the many things that this machine can do. The MST 140i comes with a Quick Start guide that walks you through the machine set-up in four simple steps. The MST 140i uses 115VAC and has a maximum output of 140 Amps. With the MST 140i you can be welding like a pro in no time.


  • Maximum output: 140 Amp
  • MIG (GMAW/FCAW): 140A / 19V @ 15% Duty Cycle
  • Welding Output @104 degrees F (40 degrees C): 90A / 18.5V @ 20% Duty Cycle
  • STICK (SMAW): 90A / 23V @ 15% Duty Cycle
  • Welding Output @104 degrees F (40 degrees C): 800A / 23.2V @ 35% Duty Cycle
  • TIG (GMAW): 140A / 15.6V @ 15% Duty Cycle
  • Welding Output @104 degrees F (40 degrees C): 100A / 14V @ 20% Duty Cycle
  • Current Range: 10 - 140 Amp
  • MIG Welding Voltage Range: 14.5 - 19 Volt
  • Wirefeed Speed Range: 90 - 390 IPM (2.3 - 9.9 m/min)
  • Nominal OCV Volt/DC: 53 Volt
  • Maximum Plate Thickness: 1/8" (3.2 mm)

Includes: Firepower MST 140i Power Supply, Firepower 140 Amp MIG Gun, Firepower Argon/CO2 Pressure Regulator / Gauge and Hose, Electrode Holder and Ground Clamp, Drive Roll and Contact Tips, 15-20 Amps Power Adapter, Shoulder Strap, and CD with Multi-Language Operating Instructions


WARNING: This product can expose you to Silica, crystalline (airborne particles of respirable size) a chemical known to the State of California to cause Cancer. For more information go to


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