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K3140-2 / Idealarc® AC1200 Subarc Welder

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  • AC1200 automatic submerged arc welding power source is designed for operation with Lincoln Electric's NA-4 automatic wire feeder.


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Automatic Submerged Arc Welding Power Source

The AC1200 submerged arc power source is specifically designed for operation with Lincoln Electric’s NA-4 automatic wire feeder. It is a power source that you can count on day-in and day-out to provide proven performance.

  • Scott® connection taps standard for two AC welding heads operated in tandem.
  • Rheostat adjusts the output settings while welding or at idle.
  • Three output studs with overlapping ranges.
  • ±10% input line voltage compensation for maintaining weld consistency.
  • Thermostat protection from current overload and excessive temperatures.
  • Terminal strip for remote control and wire connections and output studs for welding cables.
  • Removable side panels for easy access to internal parts.
  • Windings and rectifiers protected against moisture and corrosive environments.
  • Seven-year warranty on power rectifier.

Product Weights & Dimensions

Dimensions (H x W x D) 62.2 in x 22 in x 38 in (1580 mm x 559 mm x 965 mm)
Net Weight 1636 lbs (742.09 kg)


Machines Processes Submerged Arc (SAW)
Max Rating 1500
Machines Communication Technology analog
Wire Feeder Supply Voltage 115VAC
Amphenol Pins (type of connector) Terminal Strip
Work Lead Connector Type Lug

Basic Specification

Input Voltage 380/400/415,460
Input Current 230/201/190/182
Input Hertz 50,50/60,60
Input Power 380/415/460/460/1/50/60
Input Phase 1
Mode Icon CC
Output Range 200-1500A AC
Polarity AC
Rated Output 1200A/44V/100%


Typical Application Heavy Fabrication


Warranty 3 Years
  • DC-1200 power source.