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The GYS KRONOS 400T G is a high-performance, three-phase multi-process inverter welder designed for the most demanding MIG/MAG, MMA, and TIG DC welding applications. Built in France, this machine delivers exceptional arc stability, precision control, and reliability across multiple materials, including steel, stainless steel, aluminium, and flux-cored wire. Equipped with an intuitive 3.5” colour multilingual interface and dual Easy/Expert display modes, it provides effortless control and parameter adjustment even while wearing gloves. The KRONOS 400T G integrates digital synergy technology for automatic parameter optimisation, resulting in spatter-free, consistent welds. Its IP23S rating, reinforced chassis, and compatibility with the WF 35 wire feeder make it ideal for professional workshops requiring both flexibility and durability.
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The KRONOS 400T G is specifically engineered for bodyshops, fabrication facilities, and industrial workshops demanding top-tier welding accuracy and repeatable performance. Its advanced synergy modes and robust construction make it an excellent choice for production lines and repair centres working with various metals.
| Specification | Details |
|---|---|
| Reference | 075054 |
| Input Voltage | 400V – 3 Phase, 50/60Hz |
| Output Current Range | 15A – 400A |
| Duty Cycle (40°C) | 300A @ 60%, 280A @ 100% |
| Welding Processes | MIG/MAG, MMA DC/Pulse, TIG DC Lift/Pulse |
| Wire Diameter | Steel/Stainless: 0.6–1.2mm | Aluminium: 0.8–1.2mm | Flux-Cored: 0.9–1.6mm |
| Wire Feed Speed | 1.5 – 20 m/min |
| Protection Rating | IP23S |
| Dimensions (mm) | 900 × 550 × 670 |
| Weight | 66 kg |
| Compliance | EN 60974-1 |
Its synergy control, stable digital arc, and dual-mode display make it ideal for high-quality industrial and automotive welding applications.
Yes — the KRONOS 400T G supports aluminium, stainless steel, and mild steel with specific synergy programs for each material and wire type.
Yes, it’s compatible with the GYS WF 35 wire feeder (sold separately), enabling precise control and advanced MIG/MAG welding performance.
After selecting wire type, diameter, and thickness, the system automatically adjusts voltage and current for optimal, consistent welds.



As an authorised GYS Service Centre with a nationwide network of trained engineers, BWS Ltd provides expert installation, setup, and ongoing support for all GYS welding equipment. We ensure every machine is calibrated, tested, and ready for professional use, backed by over 30 years of industry experience. Trusted by UK workshops and manufacturers since 1994, BWS offers exceptional service, expert advice, and fast delivery on all GYS systems.