Welding set

ESAB ESAB LAF 635 DC und PC A"-A6

SAW Welding System (Submerged Arc Welding/SAW)

with Process Controller A2–A6 and ESAB LAF 635 DC
Year of manufacture: 2000
Condition: good, operational (from educational institution)

For sale is a powerful submerged arc welding system (SAW) consisting of an ESAB DC power source LAF 635 and A2–A6 Process Controller (depending on version, PEH/PEK system). The system originates from an educational institution and was primarily used for training purposes – typically well maintained and regularly inspected.

Ideal for automated/mechanized submerged arc welding, e.g., in steel construction, tank manufacturing, pipe/profile fabrication, cladding (depending on welding head/tractor/gantry – if available).

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Technical Data – ESAB LAF 635 DC (Power Source)

Type: remotely controllable 3-phase DC welding power source for SAW and mechanized MIG/MAG

Mains connection: 400/415 V, 3~ 50 Hz (alternatively 440 V, 3~ 60 Hz)

Duty cycle:
630 A / 44 V at 100%

Adjustment range: 75 A / 18 V up to 800 A / 44 V (46 V)

Open-circuit voltage: 54 V
Idle power consumption: 150 W
Efficiency: 0.84
Power factor (cos φ): 0.90
Protection class: IP23
Weight: approx. 260 kg
Dimensions (L × W × H): 652 × 483 × 800 mm (or 652 × 483 × 916 mm incl. base)
Fusing/Mains data (reference value as per manual): e.g., 63 A slow-blow, supply line 4 × 16 mm², mains current at 100% load 52 A (at 400/415/440 V)

Technical Data – A2–A6 Process Controller (PEH / A2–A6)

The A2–A6 Process Controller is used for process control/regulation of the mechanized welding system and is designed for SAW welding.

Rated voltage (supplied via power source): 42 V AC, 50/60 Hz

Rated power: max. 900 VA

Motor connections: for ESAB A2 or A6 motors

Motor current: 5 A continuous, max. 10 A

Wire feed control: internal EMF control or with AC tachometer (6 pulses/rev)

Condition & Origin

Good, well-maintained condition (training/educational environment)

System is fundamentally designed for industrial use (mechanized SAW / MIG/MAG)

ESAB LAF 635 DC Power Source
A2–A6 Process Controller (operation/control unit)

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