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The GYS KRONOS 400T W is a robust three-phase multi-process inverter welder engineered for professional MIG/MAG, TIG DC, and MMA welding. Designed and manufactured in France, this model includes an integrated 800W cooling unit for extended operation and efficiency in demanding industrial environments. Its digital synergy control automatically adjusts welding parameters for different wire types and gases, ensuring consistent weld quality and minimal spatter. With a 3.5” multilingual colour display and intuitive navigation, welders can quickly optimise settings, while the dual operating modes—Easy and Expert—allow both newcomers and experienced professionals to achieve precise results. The KRONOS 400T W delivers exceptional stability, energy efficiency, and versatility, making it ideal for heavy fabrication, automotive repair, and production environments.
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The KRONOS 400T W is designed for industrial workshops, fabrication plants, and automotive bodyshops that demand reliable high-output performance with advanced control. Its built-in water cooling system and digital synergy functions make it perfect for professionals handling mixed-material welding and extended production cycles.
| Specification | Details |
|---|---|
| Reference | 081079 |
| Input Voltage | 400V – 3 Phase, 50/60Hz |
| Output Current Range | 15A – 400A |
| Duty Cycle (40°C) | 300A @ 60%, 280A @ 100% (MIG) |
| 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 |
| Integrated Cooling Unit | 800W Water Cooling System |
| Protection Rating | IP23S – Suitable for Harsh Environments |
| Dimensions (mm) | 900 × 550 × 810 |
| Weight | 66 kg |
| Compliance | EN 60974-1 |
Its integrated water cooling system, advanced synergy control, and three-phase power output ensure long-term reliability under continuous operation.
Yes — it supports steel, stainless steel, aluminium, and flux-cored wires with dedicated synergy settings for each material.
Digital synergy automatically calculates optimal voltage and wire speed for your chosen wire type, gas, and thickness, delivering consistent, professional-quality welds.
Regular maintenance of the cooling unit and cleaning of air filters is recommended to ensure optimal performance and equipment longevity.



As an approved GYS Service Centre with nationwide coverage, BWS Ltd offers expert installation, calibration, and after-sales support for all GYS welding systems. Every unit is backed by our team of professional engineers, ensuring seamless setup, certified testing, and dependable long-term performance. Trusted by UK workshops since 1994, BWS delivers genuine GYS equipment, technical excellence, and fast, reliable service for the automotive and industrial sectors.