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ESAB Fabricator EM401iw / 501iw MIG Welder – 415v – 400A
- Exceptional weld quality: Achieve clean, consistent welds every time thanks to the machine’s advanced features and precise control
- Increased productivity: Minimise downtime with the machine’s high-duty cycle and efficient operation
- Reduced operating costs: Energy-saving inverter technology keeps your energy bills low
- Enhanced portability: Integrated wheels and a cylinder support system make maneuvering the welder around your workspace a breeze
£2,786.19 – £3,348.33 ex VAT


Buy Now, Pay Later In 3 Interest-Free Payments
Master Any Welding Project with the ESAB Fabricator EM401i/501i Industrial MIG Welder
Unleash superior welding power and control with the ESAB Fabricator EM401i/501i, a heavy-duty MIG welder built to conquer even the most demanding industrial applications. This feature-packed machine is ideal for professional welders and workshops seeking exceptional performance, robust design, and unmatched versatility.
Don’t settle for anything less than the best. Invest in the ESAB Fabricator EM401i/501i MIG welder and experience the power, precision, and reliability you need to take your welding projects to the next level.
Features
- Heavy-duty inverter technology: Experience superior arc stability, precise control, and energy efficiency for professional-grade results
- 400A or 500A output at 60% duty cycle: Tackle even the thickest materials with unwavering power and minimal downtime. (Choose between the EM401i for 400A or the EM501i for 500A).
- MIG/MAG and MMA (stick) welding capabilities: Expand your welding repertoire with the ability to handle a wide range of materials and welding processes
- Rugged construction: Built to withstand the harsh realities of industrial environments, this MIG welder is a reliable partner for years to come
What’s In The Box
- ESAB Fabricator EM 501i or 401i
- 5m mains cable
- Wheels
- 5m return cable with clamps
- Shelf for gas cylinder
- Guide pin for the wire feeder
- Instruction manual
Applications
- Fabrication shops
- Heavy construction
- Shipbuilding
- Repair and maintenance
- Pipeline welding
- And more!
Ordering
Part No. | Description |
---|---|
0446400882 | Fabricator EM 501i with integrated cooling unit – Power Source Only |
0446400883 | Fabricator EM 401i with integrated cooling unit – Power Source Only |
0446400884 | Fabricator EM 401i – Power Source Only |
Specifications
Model | EM 401i | EM 501i |
---|---|---|
Voltage | 380-415 ±10% V 3, 50/60 Hz | 380-415 ±10% V 3, 50/60 Hz |
MIG/MAG Welding Output | 400 A / @ 60 40 30 % Duty Cycle 310 A / @ 100 % Duty Cycle |
500 A / @ 60 % Duty Cycle 390 A / @ 100 % Duty Cycle |
MMA Welding Output | 400 A / @ 60 % Duty Cycle 310 A / @ 100 % Duty Cycle |
500 A / @ 60 % Duty Cycle 390 A / @ 100 % Duty Cycle |
Power Factor at Maximum Current | .091 | .091 |
Efficiency at Maximum Current | 86 % | 87 % |
Standards | CE, EAC | CE, EAC |
Protection Class | IP23 | IP23 |
Setting Range MIG/MAG | 15.5-34 VDC (30-400 A) | 15.5-39 VDC (30-500 A) |
Setting Range MMA/DC | 21.2-36 VDC (30-400 A) | 21.2-40 VDC (30-500 A) |
Energy Save Mode | <35 W | <35 W |
Operating Temp | -10 to +40 °C | -10 to +40 °C |
Dimensions, L x W x H | 1035 x 500 x 1015 mm | 1035 x 500 x 1015 mm |
Weight w/o cooling unit w/ cooling unit w/o coolant w/ cooling unit & coolant |
107.5 kg 111.5 kg 102.0 kg |
111.5 kg 115.5 kg N/A kg |
Spares & Accessories
Fabricator Feed 304 – 0446401881
Fabricator Feed 304w – 0446401882
Wheel kit, Warrior feeder – 0458707880
Wheel Kit, all wheels turn – 0458707881
Strain relief for welding gun – 0457341881
Strain relief for connection cables – 0459234880
Quick Connector Marathon Pac – F102440880
Interconnection Cables – 70mm², Gas-Cooled, 2.0 m (6.5 ft) – 0459836880
Interconnection Cables – 70mm², Gas-Cooled, 5 m (16.5 ft) – 0459836881
Interconnection Cables – 70mm², Gas-Cooled, 10.0 m (32.8 ft) – 0459836882
Interconnection Cables – 70mm², Gas-Cooled, 15.0 m (49.2 ft) – 0459836883
Interconnection Cables – 70mm², Gas-Cooled, 25.0 m (82 ft) – 0459836884
Interconnection Cables – 70mm², Liquid-Cooled, 2.0 m (6.5 ft) – 0459836890
Interconnection Cables – 70mm², Liquid-Cooled, 5 m (16.5 ft) – 0459836891
Interconnection Cables – 70mm², Liquid-Cooled, 10.0 m (32.8 ft) – 0459836892
Interconnection Cables – 70mm², Liquid-Cooled, 15 m (49.2 ft) – 0459836893
Interconnection Cables – 70mm², Liquid-Cooled, 25.0 m (82 ft) – 0459836894
Interconnection Cables – 95mm², Liquid-Cooled, 2.0 m (6.5 ft) – 0459836990
InterconnectionCables-95mm², Liquid-Cooled, 5.0 m (16.5 ft) – 0459836991
InterconnectionCables-95mm², Liquid-Cooled, 10.0 m (32.8 ft) – 0459836992
InterconnectionCables-95mm², Liquid-Cooled, 15.0 m (49.2 ft) – 0459836993
InterconnectionCables-95mm², Liquid-Cooled, 25.0 m (82 ft) – 0459836994
MXL 341 Gas-cooled Torch with Euro Connection, 3m – 0700025240
MXL 341 Gas-cooled Torch with Euro Connection, 4m – 0700025241
MXL 341 Gas-cooled Torch with Euro Connection, 5m – 0700025242
MXL 411W Water-cooled Torch with Euro Connection, 3m – 0700025250
MXL 411W Water-cooled Torch with Euro Connection, 4m – 0700025251
MXL 411W Water-cooled Torch with Euro Connection, 5m – 0700025252
MXL 511W Water-cooled Torch with Euro Connection, 3m – 0700025260
MXL 511W Water-cooled Torch with Euro Connection, 4m – 0700025261
MXL 511W Water-cooled Torch with Euro Connection, 5m – 0700025262
Coolant 10l – 0465720002
Resources
Weight | N/A |
---|---|
Free Delivery |
Free Delivery |
Brand |
Esab |
Model |
EM401i ,EM401i with Cooling Unit ,EM501i with Cooling Unit |
Voltage |
380-415v |
MIG Output |
310A @ 100 % Duty Cycle ,390A @ 100 % Duty Cycle ,400A @ 60 40 30 % Duty Cycle ,500A @ 60 % Duty Cycle |
MMA Output |
310 A / @ 100 % Duty Cycle ,390 A / @ 100 % Duty Cycle ,400 A / @ 60 % Duty Cycle ,500 A / @ 60 % Duty Cycle |
Amperage |
400A ,500A |
Phases |
Three Phase |
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.

Machine Servicing
We can repair all makes and model welding machines using genuine manufacturer parts.

Calibrations
Successfully calibrated welding equipment can maximise performance through high quality welds. A certified calibration by us will ensure that your welding machine runs to its best capabilities.