Three-phase semi-automatic welding machines – professional 400V MIG/MAG welding machines
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For professionals and industrial use, where an intensive work cycle is required. Or for those with a weak single-phase network.
From ~€600 to €3,000 depending on power and features.
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If you are looking for a powerful and reliable device for industrial or intensive work, the best solution is a three-phase MIG/MAG welder (semi-automatic). These machines run on a 400V three-phase network, ensuring a stable arc, high performance, and the ability to weld thick metal without interruptions.
Who needs a three-phase welder?
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In industry and manufacturing – when uninterrupted work under heavy loads is important.
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In professional workshops – for car repair, metal structure production.
Main advantages
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High power 250–500A.
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Stable performance under intensive conditions.
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Durability and longer service life.
In the MasterCity.lt range, you will find a wide selection of three-phase MIG/MAG welders online – from affordable, reliable models to professional systems with the most advanced features.
Choose your three-phase welding machine at a great price today and get reliable equipment for serious work.
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Price 1621.74 € VAT incl.
Spartus EasyMIG 317 DUAL PULSE semi-automatic welder, 300A, 400VCode: EASYMIG317DP-PAK-36-3Price 1078.00 € VAT incl.Lincoln Electric QUICKMIG® 250 Semi-automatic WelderCode: QUICKMIG250Price 1633.50 € VAT incl.2100.00 €You save 466.50 €
Price 1251.13 € VAT incl.
Price 1110.78 € VAT incl.![Semi-automatic Welder Spartus EasyMIG 420H, 420A, 400V [source, wire feeder, cart]](https://www.mastercity.lt/images/uploader/su/168x126.g/suvirinimo-pusautomatis-spartus-easymig-420h-420a-400v-saltinis-vielos-tiektuvas-vezimelis-5.jpg "Semi-automatic Welder Spartus EasyMIG 420H, 420A, 400V [source, wire feeder, cart]")
Semi-automatic Welder Spartus EasyMIG 420H, 420A, 400V [source, wire feeder, cart]Code: EASYMIG420H-PAK-36-3Price 2160.00 € VAT incl.
Price 3390.00 € VAT incl.![Welding semiautomatic ProMIG 535 DUAL PULSE [welding source, cooler, trolley], 500A, 400V](https://www.mastercity.lt/images/uploader/su/168x126.g/suvirinimo-pusautomatis-promig-535-dual-pulse-suvirinimo-saltinis-ausintuvas-vezimelis-500a-400v-1-1.jpg "Welding semiautomatic ProMIG 535 DUAL PULSE [welding source, cooler, trolley], 500A, 400V")
Welding semiautomatic ProMIG 535 DUAL PULSE [welding source, cooler, trolley], 500A, 400VCode: PROMIG535DP-TOWERPrice 4700.00 € VAT incl.
Welding semi-automatic Spartus EasyMIG 500 DUAL PULSE, 500A, 400V, with wire feeder, cooler and cartCode: EASYMIG500DP-PAK-51-3Price 3480.00 € VAT incl.
Price 1600.00 € VAT incl.
Semi-automatic Welding Machine Jasic MIG500 N221, 500A, 400VCode: MIG500 N221Price 2800.00 € VAT incl.Inverter semi-automatic welding machine STROM MIG-250FCode: STROM MIG-250FPrice 350.00 € VAT incl.587.64 €You save 237.64 €Welding semi-automatic Lincoln Electric QUICKMIG® 300Code: QUICKMIG300Price 1800.00 € VAT incl.2380.00 €You save 580.00 €SPARTUS EasyMIG 315 semi-automatic welding machine, 300A, 400VCode: EASYMIG315-PAK-36-3Price 812.50 € VAT incl.999.00 €You save 186.50 €
WTL Welding Semi-automatic MULTIMIG 500F LCD DOUBLE PULSE Synergic SET MIG, 500A, 400V, Water-cooledCode: WTL2021Price 4500.00 € VAT incl.
Semi-automatic welding machine WTL MULTIMIG 300 SYN MIG/MAG Dual Pulse LCD, 300A, 400V, water-cooled, on a trolleyCode: WTL2022Price 2300.00 € VAT incl.
Price 1300.00 € VAT incl.
Price 3500.00 € VAT incl.
JASIC MIG 400P N317 semi-automatic welding machine, 400A, 400VCode: MIG 400P N317Price 5371.00 € VAT incl.
Price 4500.00 € VAT incl.
Price 3700.00 € VAT incl.
MIG/MAG inverter SPARTUS® EasyMIG 320LCD welder, 300A, 400VCode: EasyMIG325Price 1020.00 € VAT incl. -
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Why choose a three-phase MIG/MAG welder?
Three-phase MIG/MAG welders are designed for professional and industrial use. They are connected to the 400V network, ensuring higher power, a stable arc, and the ability to weld thick steel or non-ferrous metals.
Advantages of three-phase machines
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High efficiency – suitable for continuous work.
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High power up to 500 A – suitable for welding large structures.
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Reliability – less overheating, longer service life.
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Option for water cooling – professional models use water-cooled torches, which maintain a comfortable torch temperature.
How to choose a three-phase welder?
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By power:
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250–300 A – for professional workshops.
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350–500 A – for industry and continuous work.
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By functions:
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Synergy – automatic parameter adjustment according to steel and gas type, wire, and material thickness.
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Pulsation – for high-quality, cleaner welds with aluminum, stainless steel, or mild steel.
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MMA/TIG modes – versatility in one machine.
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By price:
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Budget three-phase welders – from ~600 €.
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Professional industrial – 1000–3000 €.
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Most popular three-phase welders at MasterCity.lt
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Sherman DIGIMIG 300 Pulse (400V, 300A) – professional model with pulse.
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Spartus EasyMIG 317 DUAL PULSE (400V) – compact and versatile, featuring pulse and dual pulse.
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Lincoln Electric QUICKMIG 300/350 (400V) – industrial MIG/MAG welder known for reliability.
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WTL MIG 315, 400V – durable, simple, and reliable machine at a good price.
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Longweld MIG-500Y, 400V – powerful and budget-friendly option for heavy structures.
Three-phase vs single-phase welders – what’s the difference?
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Single-phase (230V): for home, garage, small workshops, and mobile use.
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Three-phase (400V): for industry, professional work, heavy structures.
Cooling system:
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Air-cooled torches – suitable up to 300A depending on load.
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Water-cooled torches – used in more powerful models (from 300A). They allow longer uninterrupted work by maintaining a comfortable torch temperature. Such three-phase welders are especially valued in industry.
Usage tips and maintenance
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Use anti-spatter sprays before work.
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Do not grind near a running machine – protect the electronics from dust and sparks.
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Allow the machine to cool after long work.
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Periodically blow out the inside with dry air at low pressure – three-phase machines will last even longer.
Conclusion
Three-phase MIG/MAG welders – reliable equipment for professionals and industry. MasterCity.lt offers a wide range online, competitive prices, warranty, and expert consultations.
Clean welds and good work!Thank you for choosing MasterCity.lt
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![Semi-automatic Welder Spartus EasyMIG 420H, 420A, 400V [source, wire feeder, cart]](https://www.mastercity.lt/images/uploader/su/504x378.g/suvirinimo-pusautomatis-spartus-easymig-420h-420a-400v-saltinis-vielos-tiektuvas-vezimelis-5.jpg "Semi-automatic Welder Spartus EasyMIG 420H, 420A, 400V [source, wire feeder, cart]")
![Welding semiautomatic ProMIG 535 DUAL PULSE [welding source, cooler, trolley], 500A, 400V](https://www.mastercity.lt/images/uploader/su/504x378.g/suvirinimo-pusautomatis-promig-535-dual-pulse-suvirinimo-saltinis-ausintuvas-vezimelis-500a-400v-1-1.jpg "Welding semiautomatic ProMIG 535 DUAL PULSE [welding source, cooler, trolley], 500A, 400V")
