WELSTAR MMA 500A (ARC) 380V 3-Phase 50Hz Inverter Welding Machine
Professional-Grade Heavy Duty Stick Welder for Industrial Applications

? Technical Specifications

• Model: WELSTAR MMA-500

• Welding Process: Manual Metal Arc (MMA/Stick)

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

• Rated Input Current: 32A

• Output Current Range: 50A-500A (Stepless Adjustment)

• Duty Cycle: 60% @ 500A | 100% @ 400A

• Open Circuit Voltage: 75V

• Efficiency: 85%+ (Inverter Technology)

• Protection Class: IP23 (Dust & Moisture Resistant)

• Dimensions: 580×320×520mm | Weight: 38kg

⚡ Key Features

✅ Industrial 500A Output

• Handles 8mm+ electrodes for welding thick steel plates (up to 25mm penetration)

• Stable arc even at low voltage (320V) conditions

✅ 3-Phase Power Stability

• Optimized for 380V 3P grids with voltage fluctuation compensation

• 30% more efficient than single-phase welders

✅ Advanced Inverter Technology

• IGBT-based system with 0.73 power factor

• 40% energy savings vs transformer welders

✅ Professional Controls

• Digital amperage display (±1% accuracy)

• Hot Start (Easy arc ignition)

• Arc Force Control (Prevents sticking)

• Anti-Stick (Auto power cut if electrode sticks)

✅ Rugged Construction

• Military-grade powder-coated steel casing

• Dual cooling fans with thermal overload protection

• Copper wound transformer for maximum durability

? Applications

✔ Heavy steel fabrication (20mm+ plates)
✔ Shipbuilding & offshore rigs
✔ Pipeline welding (API/ASME standards)
✔ Mining equipment repairs
✔ Structural steel construction

? Package Includes

• 1× MMA-500 Welding Machine

• 1× 500A Electrode Holder (5m cable)

• 1× 500A Ground Clamp (5m cable)

• 1× 3-Phase Power Cable (5m)

• 1× Brush/Hammer Tool

• User Manual & Warranty Card

?️ Safety & Compliance

• CE Certified

• ISO 9001:2015 Manufacturing Standards

• 1-Year Warranty (Excludes consumables)

? Why Choose This Machine?

▶ Unmatched Power - True 500A output outperforms competitors' 400A-rated machines
▶ 3-Phase Reliability - No voltage drops during long welds
▶ Military Durability - Tested in extreme workshop environments
▶ Precision Control - Perfect for 6010, 7018, 7024 electrodes