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Cobra by Stealth 315 Multi-Process MIG/TIG/MMA Welder - 30-315A (Air Cooled, 3-Phase 400V)

9104H Stealth In Stock Fast Dispatch
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£1,722.67 ex VAT
£2,067.20 inc VAT
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  • 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
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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

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User Manual

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A 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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