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ESAB Automated Sub Arc LAF 631/1001/1251/1601
- Increased Productivity: Achieve faster welding speeds and higher deposition rates
- Superior Weld Quality: Consistent arc characteristics lead to cleaner, stronger welds
- Reduced Rework: Minimise defects and improve overall project efficiency
- Enhanced Automation Control: Seamless integration with ESAB’s process controllers for simplified operation
- Scalable Power: Choose the right power source for your needs, with the option to expand for future projects
- Future-Proof Investment: Ready for Industry 4.0 integration for enhanced data management and control
£12,219.80 – £28,573.44 ex VAT


Buy Now, Pay Later In 3 Interest-Free Payments
Unleash High-Productivity Welding with the ESAB Automated Sub Arc LAF Power Source Series
Supercharge your automated welding operations with the ESAB LAF 631/1001/1251/1601 power source series. These industrial-grade, three-phase, fan-cooled DC power sources are built for heavy-duty submerged arc welding (SAW) and gas metal arc welding (GMAW) applications.
Features
- Unmatched Power and Performance: Choose from four models (LAF 631, 1001, 1251, & 1601) offering a wide range of output currents to perfectly match your project demands
- Exceptional Arc Stability: Experience smooth, consistent arc characteristics at both high and low voltages, leading to superior weld quality and minimal rework
- Streamlined Automation Integration: Designed to work seamlessly with ESAB’s A2-A6 equipment range and A2-A6 PEK or A2 PEI process controllers, simplifying setup and operation
- Advanced Communication Ready: Prepare your system for Industry 4.0 integration with built-in support for standard protocols like TCP/IP (LAN), CAN, and PLC communication (optional modules might be needed)
- Double Your Power: For the most demanding jobs, connect two LAF power sources in parallel to achieve even higher welding currents
- Built to Last: The robust, fan-cooled design ensures reliable operation in even the most challenging industrial environments
Applications
- Heavy fabrication
- Shipbuilding
- Pressure vessel construction
- Pipe spooling
- Long seam welding
- General industrial applications
Ordering
Part No. | Description |
---|---|
0460513880 | LAF 1001 440/550V 3PH |
0460514880 | LAF 1251 440/550V 3PH |
0460515880 | LAF 1601 |
Specifications
Weight | ||||
---|---|---|---|---|
LAF 631 | LAF 1001 | LAF 1251 | LAF 1601 | |
Weight (met) | 260 kg ( 573 lbs ) | 330 kg ( 727.5 lbs ) | 490 kg ( 1080 lbs ) | 585 kg ( 1290 lbs ) |
Power Specifications | ||||||||
---|---|---|---|---|---|---|---|---|
LAF 631 | LAF 1001 | LAF 1251 | LAF 1601 | |||||
Conditional Statement | GMAW SAW |
GMAW SAW |
GMAW SAW |
GMAW SAW |
||||
Setting Range | 50/17-630/44 30/21-800/44 |
50/17-1000/45 40/22-1000/45 |
60/17-1250/44 40/22-1250/46 |
– 40/22-1600/46 |
Output Ratings | ||||
---|---|---|---|---|
Model | LAF 631 | LAF 1001 | LAF 1251 | LAF 1601 |
Duty Cycle | 100 % 60 % |
100 % 60 % |
100 % 60 % |
100 % 60 % |
Output Current AC | ||||
VAC Out |
Spares & Accessories
Control cable, 100 m (328 ft.) – 0449500885
Control cable, 15 m (49 ft) – 0449500880
Control cable, 25 m (82 ft.) – 0449500881
Control cable, 35 m (115 ft.) – 0449500882
Control cable, 50 m (164 ft.) – 0449500883
Control cable, 75 m (246 ft.) – 0449500884
Digital Control Cable, 35 m (115 ft) – 0460910883
Digital Control Cable, 50 m (164 ft) – 0460910884
Wheel set LAF 631 – 0457787880
Resources
ESAB Welding Equipment Selection Guide For Beams & Cylinders
LAF 1001 & 1001M Instruction Manual
LAF 1251 & 1251M Instruction Manual
LAF 1601 & 1601M Instruction Manual
Take your automated welding operation to the next level. Order now or contact us today to discuss your specific requirements and get a quote for the ESAB LAF power source series that’s right for you!
Weight | N/A |
---|---|
Brand |
Esab |
Model |
1001 ,1251 ,1601 |
Voltage |
400v |
Phases |
Three Phase |
Free Delivery |
Free Delivery |
Click and Collect:
Free Click and Collect with no minimum spend from our warehouse on the Empress Park, Southampton with on-site parking. Once your order has been processed, we will advise you when it is ready for pickup. Just want advice? No problem. Feel free to call in to speak to one of our friendly experts.
EWS Fleet Coverage Areas:
Southampton | Eastleigh | Winchester | Alton | Farnham | Petersfield | Havant | Hayling Island | Waterlooville | Fareham | Portsmouth | Gosport | Chichester | Arun | Worthing | New Forest | Christchurch | Salisbury | Wiltshire | Test Valley | Basingstoke and Deane | West Berkshire | Reading | Hart | Waverley | East Hampshire | East Dorset | Hampshire | Bournemouth | Poole | Lymington | Ringwood | Verwood | East Preston | Goring-by-Sea | Lancing | Shoreham-by-Sea | Steyning | Bramber | Horsham | Adur
Nationwide Delivery (all items excluding gas cylinders):
Free UK mainland (England, Scotland and Wales) delivery on orders over £85 inc. VAT.
UK mainland delivery is £7.50 inc. VAT on orders under £85 inc. VAT.
UK islands and Northern Ireland shipping costs may vary.
UK Delivery for Gas Cylinders:
Shipping costs for gas cylinders are calculated at checkout once the delivery postcode is entered.
International Delivery:
Please contact us for an accurate delivery quote.

Automation Consultation
Automation is the smart choice for any modern business looking ahead. With the right tailored solution, it will boost efficiency and reduce your long-term costs. Here's how:
1. Overcome labour shortages: Stay ahead of the industry’s skilled welder shortage
2. Minimise waste/human error: automation reduces material waste and rework by up to 15%
3. Cut Energy Costs: Automated welding systems use up to 30% less energy than manual methods
4. Lower Emissions: Automated systems reduce spatter and fumes, cutting emissions by up to 20% and creating a cleaner, safer work environment.
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