Cobra by Stealth 315 Multi-Process MIG/TIG/MMA Welder - 30-315A (Air Cooled, 3-Phase 400V)
- 3-phase multi-process welder (MIG, TIG, MMA) delivering 30–315A
- 100% duty cycle at 200A; 60% at 260A; 40% at 315A
- Welds carbon steel, stainless steel, alloy steel, aluminium (AlMg) and CuSi alloys
- IGBT inverter with PWM technology and LCD panel for parameter control
- Dimensions 960 × 480 × 940 mm; weight 51.1 kg

The MIG 315 Inverter is a 3-phase multi-process welder (MIG, TIG, MMA) delivering 30–315A with up to 100% duty cycle at 200A, ideal for carbon steel, stainless steel, alloy steel, aluminium (AlMg) and CuSi alloys.
The BT MIG 315 Inverter is designed for versatility and reliability across a wide range of welding applications.
Built with advanced IGBT inverter and PWM technology, it offers excellent arc stability, improved efficiency, and a compact design compared to traditional transformer machines.
This multi-process unit supports MIG/MAG (manual and synergic), DC TIG (Lift Arc) and MMA (stick) welding, making it suitable for workshops, fabrication, repair, and industrial use.
An LCD panel provides precise parameter control, while built-in protections guard against over-voltage, over-current, and overheating.
With an internal wire feeder, Euro torch connection, and spool gun compatibility, the MIG 315 Inverter delivers both performance and flexibility for demanding environments.
| Input Voltage | 3-Phase 400V ±10% | 50/60Hz |
| Input Current | MIG: 22.5A | TIG: 17.0A | MMA: 18.5A |
| Input Power | MIG: 15.6 kVA | TIG: 11.8 kVA | MMA: 12.8 kVA |
| Power Factor | 0.66 |
| Efficiency | MIG: 88.6% | TIG: 86.2% | MMA: 88.7% |
| Welding Current Range | 30-315A |
| Duty Cycle | 40% at 315A |
| Protection Rating | IP21S |
| Wire Diameter (Solid Wire) | 0.8mm |
| Cooling | Air Cooled |
| Welding Current Range | MIG: 30–315A | TIG: 10–300A | MMA: 10–250A |
| No-load Voltage | MIG: 75.5V | TIG: 71.5V | MMA: 75.5V |
| Duty Cycle (40°C) | 40% @ 315A | 60% @ 260A | 100% @ 200A |
| Wire Diameter Capability | Fe: 0.8 / 0.9 / 1.0 / 1.2 mm Stainless Steel: 0.9 / 1.0 / 1.2 mm Flux-Cored: 0.9 / 1.0 / 1.2 mm AlMg: 1.0 / 1.2 mm CuSi: 1.0 mm |
| Dimensions | 960 × 480 × 940 mm |
| Weight | 51.1 kg |
| Protection Class | IP21S |
| Brand | Stealth |
| Portability | Wheeled / Trolley-Mounted |
| MIG Duty Cycle | 40% at 315A |
| Welding Process | MIG/MAG, MMA, TIG |
| Applications | Sheet Metal Fabrication (<100A), Light Fabrication (100-160A), General Fabrication (160-210A), Heavy Fabrication (210-300A), Industrial Workshop (300-400A) |
| Amperage (Min) | 30 |
| Amperage (Max) | 315 |
| Power Source | Industrial 3-Phase (400V) |
| Duty Rating | Medium Duty (30-60%) |
| Enclosure Rating | IP21 / IP21S |
| Synergic Control | Yes |
| Power Source Type | Inverter |
| Flux Compatible | Yes |
| Wire Feed Type | Compact Integrated Wire Feed |
| Cooling | Air Cooled |
| Max Wire Thickness | 0.8mm Wire |
Operation Manual
Download PDFUser Manual
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