Skip to Main Content
Canadian
Canadian owned and operated

0460514880 - ESAB LAF 1251 DC Submerged Arc Welding Power Source 440/550V

Packaging: pack of 1
$48,790.53/EA $29,442.56/pack of 1 only $29,442.56/EASave 40%

Usually ships within 3-5 business days

SKU: ESB0460514880 Categories: ,

OVERVIEW

Industrial-Grade Submerged Arc Power Source

The ESAB LAF 1251 is a premier three-phase, fan-cooled DC welding power source engineered specifically for high-efficiency automated submerged arc welding (SAW) and high-productivity Gas Metal Arc Welding (MIG/MAG). Designed to meet the rigorous demands of heavy industry, this unit (SKU: 0460514880) operates on a 440/550V 3-phase input, making it suitable for specific industrial grids often found in heavy manufacturing sectors. The machine utilizes advanced thyristor control technology to deliver exceptional arc characteristics, ensuring smooth starts and stable operation across the entire current range.

One of the defining technical advantages of the LAF 1251 is its impressive duty cycle. Rated at 100% duty cycle at 1250 Amps, this power source is built for continuous, non-stop operation, eliminating downtime due to thermal overload in high-volume production environments. It features built-in voltage compensation, which actively monitors and adjusts for mains voltage fluctuations, ensuring that the welding parameters remain constant and the weld quality remains uniform. This is critical in automated applications where consistency is paramount.

Integration is seamless with ESAB's ecosystem of automation equipment. The LAF 1251 is fully compatible with the A2 and A6 process controllers, such as the PEK and PEI systems. This connectivity allows for sophisticated control over welding parameters, including pre-setting and remote adjustment, facilitating complex automated setups for beam welding, pipe mills, and tank fabrication. The unit's robust chassis is designed to withstand harsh industrial environments, ensuring longevity and reliability even in dusty or rugged conditions.

Key Technical Specifications:

  • Input Voltage: 440/550V, 3-Phase, 60Hz
  • Output Range: Optimized for high-current applications up to 1250A
  • Duty Cycle: 100% at 1250A / 44V
  • Process Compatibility: Submerged Arc (SAW), MIG/MAG
  • Cooling: Forced Air (Fan Cooled)
  • Communication: Analog/Digital interface for ESAB controllers
Additional Information
Packaging Description:pack of 1
Voltage:440/550V
Weld Process:MIG/MAG, Submerged Arc (SAW)
Phase:3-Phase
Process Type:GMAW (MIG/MAG), Submerged Arc Welding (SAW)
Input Voltage:440V, 550V
Amperage Range:Up to 1250A
Duty Cycle:100% @ 1250A
Cooling Type:Fan Cooled
Control Interface:Analog/Digital (via PEK/PEI)
Applications:Heavy Fabrication, Shipbuilding, Wind Towers
----- new values below ----
Process Type:Submerged Arc Welding (SAW), GMAW (MIG/MAG)
Input Voltage:440V, 550V
Amperage Range:Up to 1250A
Duty Cycle:100% @ 1250A
Cooling Type:Fan Cooled
Control Interface:Analog/Digital (via PEK/PEI)
Applications:Heavy Fabrication, Wind Towers, Shipbuilding
Brand:ESAB
Voltage:440/550V
Weld Process:Submerged Arc (SAW), MIG/MAG
Phase:3-Phase

INCLUDED

  • 1x LAF 1251 Power Source
  • 1x Instruction Manual
  • 1x Installation Hardware Set

APPLICATIONS

  • Wind Energy: Manufacturing of wind tower sections and foundations.
  • Pressure Vessels: Longitudinal and circumferential seam welding of heavy-wall tanks.
  • Shipbuilding: Panel lines and hull fabrication.
  • Pipe Mills: Spiral and longitudinal pipe welding.
  • Bridge Construction: Heavy structural beam fabrication.
  • General Heavy Fabrication: Earthmoving equipment and mining machinery components.

FAQ

The LAF 1251 is primarily designed for Submerged Arc Welding (SAW), but it is also excellent for high-productivity MIG/MAG (GMAW) welding.

The LAF 1251 is rated for a 100% duty cycle at 1250 Amps, allowing for continuous operation in automated setups.

This specific model requires a 3-phase input voltage of 440V or 550V.

The LAF 1251 is a DC (Direct Current) power source.

It is compatible with ESAB's A2 and A6 process controllers, such as the PEK and PEI units.

Yes, it features built-in mains voltage compensation to maintain a stable output despite input fluctuations.

While primarily a welding power source, high-amperage DC sources like this can often be used for gouging, though it is optimized for automated welding processes.

The unit is fan-cooled.