Details

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GYS EXAGON 400 FLEX CC/CV – Multi-Process Multi-Voltage Welding Power Source

The GYS EXAGON 400 FLEX CC/CV (Ref. 069718) is a powerful 5-in-1 multi-process, multi-voltage welding power source designed for professional and demanding industrial welding applications. Equipped with PFC (Power Factor Correction) and FLEX technology, it can operate from a remarkably wide power supply range, accepting both single-phase and three-phase supplies from 190 V up to 600 V. This makes the EXAGON 400 FLEX an exceptionally versatile solution for workshops, fabrication sites and challenging job-site environments where available power supplies may vary.

Designed for maximum process flexibility, the EXAGON 400 FLEX supports MMA, MMA Pulse, TIG DC, Arc Gouging and MIG/MAG welding. In MMA mode, it can weld rutile, basic, stainless steel, cast iron, aluminium and cellulosic electrodes up to Ø6 mm. MMA Pulse provides adjustable pulse frequency for improved control, particularly in vertical welding positions, while TIG DC uses reliable Lift ignition. The machine also supports carbon arc gouging with electrodes up to Ø6.5 mm.

For MIG/MAG welding, the EXAGON 400 FLEX can operate with solid wire from Ø0.6–1.6 mm and flux-cored wire up to Ø2.4 mm when paired with the optional NOMADFEED wire feeder.

Engineered for intensive industrial use, the EXAGON delivers up to 400 A at 60% duty cycle on three-phase supply. Its high open-circuit voltage promotes excellent arc stability and reliable ignition, while an on-demand ventilation system helps reduce dust ingress into the machine. Heavy-duty metal construction, anti-shock protection and dual steel carrying handles provide durability and portability for demanding working conditions.

The EXAGON 400 FLEX also incorporates a selectable VRD (Voltage Reduction Device) that can reduce the no-load voltage to below 35 V. With an IP23 protection rating, generator compatibility, support for extension cables up to 100 metres, and optional robot connectivity, the machine is designed for both workshop and site-based industrial applications.

Key Features & Benefits

• 5-in-1 multi-process welding: MMA, MMA Pulse, TIG DC, MIG/MAG and Arc Gouging
• Multi-voltage FLEX technology for operation across an exceptionally wide power supply range
• Compatible with single-phase and three-phase power supplies
• Wide input voltage capability from 190 V to 600 V
• PFC – Power Factor Correction technology
• Up to 400 A welding output
• High duty cycle of 400 A @ 60% on three-phase supply
• MMA welding with electrodes up to Ø6 mm
• Compatible with rutile, basic, stainless steel, cast iron, aluminium and cellulosic electrodes
• MMA Pulse with adjustable frequency for improved vertical welding control
• TIG DC Lift ignition
• Carbon arc gouging with electrodes up to Ø6.5 mm
• MIG/MAG welding with solid wire from Ø0.6–1.6 mm
• Supports flux-cored wire up to Ø2.4 mm
• Compatible with optional NOMADFEED 425-4 CC/CV wire feeder
• High open-circuit voltage for improved arc ignition and stability
• On-demand ventilation helps reduce dust ingress
• Selectable VRD reduces no-load voltage to below 35 V
• Heavy-duty metal construction with anti-shock protection
• Dual steel handles for easier transportation
• IP23 rated for demanding working environments
• Generator compatible – 36 kVA
• Supports extension cables up to 100 m
• Optional robot connection module available

Intuitive Operator Interface

The EXAGON 400 FLEX features a straightforward control interface designed for fast setup and precise adjustment. Two control thumbwheels provide easy access to welding parameters, while the high-visibility digital display remains readable even in bright working environments.

Up to 50 welding programs per process can be stored for recurring applications, while an advanced settings menu provides greater process control. Welding current and voltage can also be displayed during and after welding for DMOS/QMOS documentation, and the keypad can be locked to prevent accidental parameter changes.

Technical Specifications

Specification	Single-Phase	Three-Phase
Input Voltage	208–380 V	208–380 V / 380–525 V
Input Current	63 A	63 A / 32 A
Frequency	50/60 Hz	50/60 Hz
MMA Welding Current Range	20–300 A	20–400 A
TIG Welding Current Range	10–300 A	10–400 A
MIG/MAG Welding Current Range	15–300 A	15–400 A
MMA Electrode Diameter	Ø1.6–5 mm	Ø1.6–6 mm
Maximum Output / Duty Cycle	300 A @ 40%	400 A @ 60%
Output @ 100% Duty Cycle	220 A	350 A
Open-Circuit Voltage (U₀)	85 V	85 V
VRD Voltage (Uᵣ)	35 V	35 V
Recommended Cable Section	70 / 95 mm²	70 / 95 mm²
Dimensions	66 × 51 × 30 cm	66 × 51 × 30 cm
Weight	40 kg	40 kg
Protection Rating	IP23	IP23
Power Cable Length	5 m	5 m
Recommended Generator	36 kVA	36 kVA
Standard	EN 60974-1	EN 60974-1

 

The machine supports up to 300 A on single-phase and up to 400 A on three-phase, with the rated duty-cycle values above measured according to EN 60974-1 at 40°C.

Welding Process Specifications

Process	Capability
MMA	Rutile, basic, stainless steel, cast iron, aluminium and cellulosic electrodes
MMA Pulse	Adjustable pulse frequency; suitable for vertical welding positions
TIG	TIG DC with Lift ignition
Arc Gouging	Carbon electrode up to Ø6.5 mm
MIG/MAG Solid Wire	Ø0.6–1.6 mm
Flux-Cored Wire	Up to Ø2.4 mm
MIG/MAG Wire Feeder	NOMADFEED wire feeder required