WELSTAR TIG+MMA WS 400A 380V 3P 50Hz Inverter Welding Machine
Industrial-Grade Dual Process Welder for Precision and Heavy-Duty Applications

? Technical Specifications

• Model: WELSTAR WS-400

• Welding Processes:
  ✅ TIG (DC) - For precision welding (stainless/aluminum)
  ✅ MMA (Stick) - For heavy-duty welding (up to 12mm electrodes)

• Input Voltage: 380V AC (±15%) 3-Phase

• Rated Input Current: 28A

• Output Current Range:

  • TIG: 20-400A

  • MMA: 30-400A

• Duty Cycle:

  • 60% @ 400A

  • 100% @ 350A

• Open Circuit Voltage: 80V

• Efficiency: 88% (IGBT Inverter Technology)

• Protection Class: IP23S (Dust/Splash Resistant)

• Dimensions: 600×340×540mm | Weight: 42kg

⚡ Key Features

1. Dual Process Versatility

• TIG Mode:

  • HF (High Frequency) arc start for clean aluminum/stainless welds

  • Gas pre/post flow timer (adjustable)

  • 2T/4T trigger control

• MMA Mode:

  • Hot Start & Arc Force control

  • Anti-Stick technology

2. Industrial 400A Power

• Handles 6.0mm MMA electrodes (for 20mm+ steel)

• TIG welds 1-12mm aluminum/stainless with precision

3. Advanced IGBT Inverter

• 40% energy savings vs transformer welders

• Stable arc in 310-440V voltage range

4. Professional Controls

• Digital amp/voltage display

• Pulse welding function (TIG)

• Memory presets for repeat jobs

5. Rugged Construction

• Military-grade aluminum alloy housing

• Dual turbo fans with overheat protection

• Copper+Aluminum windings for maximum durability

? Applications

✔ Aerospace components (thin aluminum TIG)
✔ Pressure vessel fabrication
✔ Structural steel welding
✔ Shipbuilding & offshore rigs
✔ Automotive aluminum repairs

? Package Includes

• 1× WS-400 Main Unit

• 1× TIG Torch (400A, 4m)

• 1× MMA Electrode Holder (500A, 5m)

• 1× Ground Clamp (500A, 5m)

• 1× Foot Pedal (TIG amp control)

• Gas Hose & Regulator

• User Manual

?️ Safety & Compliance

• CE, IEC 60974-1 Certified

• 1-Year Warranty (2 years on inverter board)

? Why Choose This Machine?

▶ True 400A Output - No fake ratings (tests at 430A peak)
▶ 3-Phase Stability - No power fluctuations during long beads
▶ Aluminum-Ready - HF start eliminates contamination
▶ Dual Cooling System - 50°C ambient temperature operation

⚠️ Note: Requires 3-Phase 380V + Argon Gas (for TIG)

Ideal for:

• Metal fabrication shops

• Pipeline welding crews

• Automotive racing teams

• Shipyard contractors

Available Options:

• Water-cooled TIG torch kit

• Spare parts package

• Industrial welding trolley