MMA and TIG Lift Inverter Welder GYS PROGYS 300 TRI 3-Phase 20-300A
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- 3-phase MMA (SMAW) and TIG (GTAW) lift arc welding inverter, 20-300A
- Switchable Voltage Reduction Device (VRD) for welder protection in hazardous environments
- High duty cycle 300A @ 60% with adjustable Hot Start and Arc Force

The PROGYS 300 TRI is a 3-phase inverter welding power source combining MMA (SMAW) and TIG (GTAW) lift arc capabilities. It delivers 20-300A welding current with advanced electronics designed for maximum productivity in harsh environments, including mines, chemical installations and shipyards.
Features
- MMA (SMAW) process: rutile (6013), basic (7018), cellulosic (6010) and aluminium electrodes up to 6 mm diameter
- Arc gouging with carbon electrodes up to 5 mm diameter
- TIG (GTAW) process with LIFT arc ignition, 1.0 to 3.2 mm
- Switchable Voltage Reduction Device (VRD) reduces no-load voltage to 20V for safety in hazardous areas
- Adjustable Hot Start for improved arc ignition
- Adjustable Arc Force for temporary current increase in difficult welding situations
- Antisticking function reduces electrode sticking risk
- High no-load voltage (83V) for good arc dynamic and cellulosic electrode ignition
- Current and voltage display during welding
- Intuitive controls with knobs operable while wearing gloves
- IP 23 classification for outside use
- Reinforced structure with optimised air-tight cooling corridor
- Optional remote control available
| Specification | Value |
|---|---|
| Welding current range | 20-300A |
| Duty cycle | 300A @ 60% |
| No-load voltage | 83V |
| VRD no-load voltage | 20V |
| Power supply | 400V 3-phase, 50/60 Hz |
| Dimensions | 54 x 46 x 28.3 cm |
| Weight | 26 kg |
| IP classification | IP 23 |
| Power requirement | 10 kW, 12.5 kVA |
| Brand | GYS |
| Pulse Welding | Non-Pulse |
| Cooling | Air Cooled |
| Power Source | Industrial 3-Phase (400V) |
| Applications | Industrial Workshop (300-400A) |
| Duty Rating | Heavy Duty (60-100%) |
| Portability | Compact / Carry Handle |
| Enclosure Rating | IP23 / IP23S or higher |
| Ignition Type | Lift |
| MMA Duty Cycle | 60% at 300A |
| Welding Process | Gouging, MMA, TIG |
Technical Data Sheet
Download PDFA carriage charge is applied to orders, for standard 1-2 day shipments to mainland destinations within the United Kingdom. Other destinations and premium services are available but subject to additional freight charges.
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