ARC/MMA, MIG/MAG and TIG from 200 A to 750 A. Every duty cycle figure on this page is from the ESAB datasheet, and every machine links to it.
| Model | Output range | Duty cycle | Supply | kVA | Weight | Best for | |
|---|---|---|---|---|---|---|---|
| ARC 200i | 200 A | — | Single phase | — | — | Workshops, maintenance, site work, training institutes | PDFQuote |
| ARC 301i | 30–300 A | 250 A @ 60% · 300 A @ 30% | 415 V, 3 ph | 11 | 15 kg | Light and medium fabrication · VRD <15 V · IP21 | PDFQuote |
| ARC 400i | 60–400 A | 400 A @ 60% · 310 A @ 100% | 400 V, 3 ph | 16 | 24.5 kg | General fabrication · 85% efficiency · OCV 74 V | PDFQuote |
| ARC 601i | 50–600 A | 600 A @ 60% · 520 A @ 100% | 415 V, 3 ph | 31.6 | 50 kg | Heavy fabrication, cement, mining · arc gouging · long leads | PDFQuote |
| Fabricator ES 400i | 20–400 A | 400 A @ 60% · 310 A @ 100% | 415 V, 3 ph | 20 | 29.5 kg | MMA + Lift TIG · pressure vessels, shipyards · leads to 100 m | PDFQuote |
| LHJ 425 | 55 A/22 V – 425 A/33 V | Continuous | 3 ph rectifier | — | 185 kg | Rectifier — any electrode class, 2.0–6.0 mm · OCV 76 V | PDFQuote |
| LHJ 750 | 80 A/23 V – 750 A/44 V | Continuous | 3 ph rectifier | — | 225 kg | The gouging machine · OCV 87 V · on wheels | PDFQuote |
Duty cycle is the number that matters. A machine rated 400 A at 60% welds six minutes in ten before it needs to cool. The ARC 400i, ARC 601i and Fabricator ES 400i all carry a genuine 100% duty cycle rating — 310 A, 520 A and 310 A respectively — which is what you need for two-shift production. Tell us your electrode size and duty and we'll size it properly →
| Model | Output | Duty cycle | kVA | Weight | Typical use | |
|---|---|---|---|---|---|---|
| Migmatic 251 | 40–250 A · 16–34 V | 250 A @ 60% · 190 A @ 100% | 9.5 | 76 kg | Step-switched rectifier · high-speed welding on thin sheet · digital volt/ammeter, spot and stitch timer | PDFQuote |
| Auto K 401 | 60–400 A · 16–36 V | 400 A @ 60% · 310 A @ 100% | 20.7 | 112 kg + 9 kg feeder | Thyristorised · mild steel, stainless and aluminium · crater control | PDFQuote |
| MIG 302i | 30–300 A · 15.5–29 V | 300 A @ 100% | 12.5 | 23.5 kg + 8 kg feeder | Inverter · general fabrication · 2-roll feeder · wire to 1.0 mm · OCV 68 V | PDFQuote |
| MIG 402i | 30–400 A · 15.5–34 V | 400 A @ 100% | 17.8 | 31.5 kg + 10 kg feeder | Inverter · heavy fabrication · 4-roll feeder · 16 program memories | PDFQuote |
| MIG 502i | 50–500 A · 16.5–39 V | 500 A @ 100% | 25 | 31.5 kg + 10 kg feeder | Inverter · production welding · 4-roll feeder · wire to 1.6 mm | PDFQuote |
| Auto K 600 | 60–600 A · 16–44 V | 600 A @ 60% · 470 A @ 100% | 40 | 160 kg + 9 kg feeder | Thyristorised · heavy fabrication, automation and hard-facing · digital volt/ammeter · wire to 1.6 mm | PDFQuote |
Migmatic 251 versus Auto K 401. The Migmatic is a step-switched rectifier — simpler, cheaper, and very good on thin sheet. The Auto K is thyristorised with crater control and will run aluminium, which the Migmatic will not. If any part of your work is aluminium, that decides it on its own.
| Model | Output | Duty cycle | kVA | Cooling | Typical use | |
|---|---|---|---|---|---|---|
| Rogue ET 201iP | 10–200 A | 200 A @ 25% · 100 A @ 100% | 6 | Air | DC pulse · portable, site and repair work · 8.7 kg · IP23S | PDFQuote |
| TIG 300i | 10–300 A | 300 A @ 100% | 12 | Air | DC · general stainless fabrication · 35 kg | PDFQuote |
| TIG 310i | DC 10–315 A · AC 20–315 A | 186 A @ 100% | 13.6 | Water | AC/DC — welds aluminium · integrated 6.5 l cooler · 60 kg | PDFQuote |
| TIG 400i | 10–400 A | 400 A @ 60% · 310 A @ 100% | 17 | Air | DC · heavier duty cycle · 35 kg | PDFQuote |
| TIG 401iW | 20–400 A | 400 A @ 60% · 310 A @ 100% | 18.7 | Water | DC · continuous production · built-in cooler and trolley · 65 kg | PDFQuote |
| TIG 510i | AC 25–500 A · DC 20–500 A | 500 A @ 60% · 387 A @ 100% | 27.7 | Water | AC/DC — welds aluminium · heavy continuous production · 114 kg | PDFQuote |
Which of these will weld aluminium. Aluminium needs AC, so only the AC/DC machines do it — the TIG 310i and the TIG 510i. Amperage does not substitute for it: a bigger DC-only set still will not run aluminium.
Every machine here links to its ESAB datasheet — click any PDF to open it.
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More machines at work on our channel: youtube.com/@arcweldingcom
Material, thickness, quantity and delivery location are all we need to begin. We represent seven authorised brands, so the recommendation you receive is the one the job calls for.