


Prices Exclude Tax
The GYS NEOMIG-i 400 G is a high-performance three-phase multi-process inverter power source designed for advanced industrial welding. Delivering up to 400A at 100% duty cycle, it offers exceptional arc stability and precision for MIG/MAG, MMA, and TIG DC welding applications. Its intelligent digital control system ensures smooth ignition, consistent performance, and reduced spatter across all materials — from steel and stainless steel to aluminium and brazing wires. Equipped with integrated synergy programs, the NEOMIG-i 400 G automatically sets the optimal welding parameters based on wire diameter, gas type, and material thickness. Compatible with WF 35 and WF 50 wire feeders, and optional KOOLWELD 2 liquid cooling, this robust machine is engineered for maximum productivity, reliability, and traceability in the most demanding workshop environments.
Collections: Best Selling Products, Newest Products
The GYS NEOMIG-i 400 G is built for professional welders, industrial workshops, and heavy fabrication facilities requiring a versatile, high-duty cycle power source for multiple welding processes.
| Specification | Details |
|---|---|
| Reference | 075085 |
| Input Voltage | 400V – 3 Phase (50/60Hz) |
| Current Range | 15A – 400A |
| Duty Cycle (40°C) | 400A @ 100% |
| Processes | MIG/MAG, MMA DC/Pulse, TIG DC Lift/Pulse, Air Arc Gouging |
| Wire Diameter | Steel/Stainless: 0.6–1.6mm | Aluminium: 0.8–1.6mm | CuSi/CuAl: 0.8–1.6mm | Flux-Cored: 0.9–2.4mm |
| Protection Class | IP23 |
| Dimensions (cm) | 75 × 30 × 49 |
| Weight | 37 kg |
| Standards | EN 60974-1 |
It supports MIG/MAG, MMA DC/Pulse, TIG DC Lift/Pulse, and Air-Arc Gouging, making it one of the most versatile welders in its class.
The NEOMIG-i 400 G delivers a full 400A at 100% duty cycle in 40°C ambient conditions, allowing for continuous industrial operation.
Yes, up to 200 Jobs can be saved and recalled, enabling quick setup for recurring welding tasks and production runs.
It’s compatible with both WF 35 and WF 50 digital wire feeders, as well as the optional KOOLWELD 2 cooling system for liquid-cooled torches.



As an authorised GYS Service Centre, BWS Ltd provides expert installation, calibration, and after-sales support across the UK. With over 30 years of experience supporting professional bodyshops and fabrication workshops, we ensure your GYS NEOMIG-i 400 G operates at peak performance. Trust BWS for certified service, genuine parts, and fast delivery — backed by real welding engineers who understand your business.