LAF 631/1001/1251/1601


LAF 631/1001/1251/1601

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Three-phase, fan-cooled DC welding power sources designed for high productivity automated submerged-arc welding (SAW) or high productivity gas metal arc welding (GMAW).


  • Used in combination with ESABs A2-A6 equipment range and the A2-A6 PEK or A2 PEI process controllers
  • Good arc stability at both high and low arc voltages
  • Adjust and monitor the welding parameters on the power source from the front panel of the process controller (PEK or PEI)
  • Welding current range can be extended by connecting two power sources in parallel for the most demanding applications
  • Ideal for SAW applications such as wind tower components, nuclear power vessels, boilers and ship building applications
  • Ideal for GMAW applications such as welding the root pass in heavy pipe production

Welding Process

  • SAW - Submerged Arc Welding
  • Cladding
  • Air Carbon Gouging

Power Specifications

Model LAF 1001
Setting Range 40/22-1000/45
Duty Cycle 100 %
Model LAF 631
Setting Range 50/17-630/44
Duty Cycle 60 %
Model LAF 631
Setting Range 30/21-800/44
Duty Cycle 100 %
Model LAF 1001
Setting Range 50/17-1000/45
Duty Cycle 100 %
Model LAF 1251
Setting Range 60/17-1250/44
Duty Cycle 100 %
Model LAF 1601
Setting Range 40/22-1600/46

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Part Numbers and Accessories

Part Numbers : LAF 631/1001/1251/1601
LAF 1001 440/550V 3PH 0460513880
LAF 1251 440/550V 3PH 0460514880
LAF 1601 0460515880
Accessories : LAF 631/1001/1251/1601
A2-A6 process controller PEK Control cable, 25 m (82 ft.) 0460910882
A2-A6 process controller PEK Control cable, 50 m (164 ft.) 0460910884