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Magnum MIG 425W HARDY MIG/MAG Welder
The Magnum MIG 425W HARDY is a powerful three-phase power source built for the heaviest work in industry. As a model integrated with an efficient liquid cooler, it is made for continuous, high output welding on production lines and on thick steel structures. With a professional four-roll wire feeder and modern IGBT inverter technology, it is a dependable tool for factories, fabrication shops and heavy industry, where power, output and reliability all count.
Key features
Industrial power: three-phase 400V supply and welding current up to 420A
Built-in liquid cooler for maximum output and long duty cycles
Professional 4×4 wire feeder that keeps feeding steady even with long torches
High duty cycle, well suited to production use
Solid industrial build that stands up to hard working conditions
Welding with self-shielded wire (FLUX) and with stick electrodes (MMA)
Probable synergic control making parameter selection easier in industrial conditions
Technical details
Technology
At the heart of the MIG 425W sits advanced IGBT inverter technology, which gives a stable welding arc, high energy efficiency and reliability. The key element is the built-in liquid cooler, which actively cools the welding torch and allows work at full power without the risk of overheating. The professional four-roll wire feeder (4×4) is the standard in this class and keeps wire delivery smooth and accurate, which is needed with long torches (4-5m) and in continuous work.
Recommended applications
- Heavy industry, production lines and manufacturing plants
- Welding of thick steel structures and agricultural machinery
- Shipbuilding and the power sector
- Heavily loaded metalwork and repair shops
- High output welding in multi-shift work
Control panel
The control panel was laid out for ergonomics and ease of use in industrial conditions. It carries clear digital displays of welding current and voltage together with solid, large knobs that allow precise adjustment even in welding gloves. Clear LED indicators report the working state of the machine, the supply and the activity of the cooling system, which gives full control over the welding process.
Product specification
| Feature | Value |
|---|---|
| Power supply | AC 400V / 50Hz |
| Welding methods | MIG/MAG, MMA, FLUX |
| Technology | IGBT inverter |
| Maximum welding current [A] | 420 |
| Duty cycle MIG/MAG [%] | 60% at 420A |
| Wire feeder type | 4-roll (4×4), integrated |
| Wire spools accepted [kg] | 5 / 15 |
| Cooling | Built-in liquid cooler |
What you get in the set
- Magnum MIG 425W HARDY machine with built-in cooler
- Liquid-cooled MIG/MAG welding torch (type 501, 4m)
- MMA electrode holder
- Earth cable
- User manual in Polish
About the Magnum brand
Magnum is a Polish brand that has been one of the leaders on the welding market since 1996. Its business model rests on supplying technically advanced machines, built in Asia to Polish specifications, at a very competitive price. The strength of the brand is its value for money, an offer that forms a complete workshop ecosystem, and dependable service with a door-to-door warranty, which builds customer trust from hobby users to professional workshops.














