MMA-300 Digital IGBT Stick Welder 230A Dual Voltage 220V/380V | Doughty

MMA-300 — 100% Duty Cycle Stick Welder for Continuous Professional Welding

The MMA-300 Digital IGBT Stick Welder from Doughty is built for welders who need to keep going. 100% duty cycle at 230A, auto dual-voltage switching, and a compact 8.5kg body that handles pipelines, structural steel, and farm equipment without breaking a sweat.

Why the MMA-300 Delivers:

• 100% Duty Cycle @ 230A — Run 3.2mm electrodes 24 hours straight without interruption
• Auto Dual Voltage 220V/380V — Automatically detects and adapts; no manual switching needed
• Hot Start — Instant arc ignition on 6010/6011 cellulose rods with zero sticking
• Adjustable Arc Force — Fine-tune penetration for 6013 (soft) or 7018 (aggressive) rods
• Up to 5.0mm Electrode Capacity — Deep fusion on carbon steel, stainless, cast iron, and more
• Digital Display — Rotate to set current; auto-suggests optimal electrode diameter
• IGBT Inverter Technology — Anti-thermal shock design for reliable marathon welding sessions
• Full Safety Protection — Overload, overheat, overcurrent protection; IP21S rated
• Ultra-Portable at 8.5kg — Easy to carry to rooftops, remote farms, or tight job sites

Applications – Built for Real Job Sites

• Widely used in pipeline welding and industrial projects.
• Perfect for structural steel, construction, and power engineering.
• Ideal for farm equipment repair and welding service businesses.
• Lightweight design makes it perfect for outdoor and high-altitude jobs.

👉 One Machine. All Your Welding Needs.

Why It’s Better Than Standard Welders

• Compared to 60–70% duty cycle machines, this welder runs continuously without stopping.
• Auto voltage detection saves time—no manual switching needed.
• Only 8.5kg, much lighter than traditional industrial welders.
• More precise arc control, works with multiple electrode types easily.

👉 Upgrade Your Welding Efficiency Today

Material Compatibility – One Machine, More Jobs

• Works with carbon steel, mild steel, and stainless steel.
• Also supports cast iron and nickel alloy welding.
• Handle multiple materials with one single machine.
• Reduce equipment cost and improve overall productivity.

Technical Specifications:

• Power Input: 1-phase 220V / 380V, 50/60Hz
• Max Load Power: 12.9KW | Rated Input: 34.0A
• Output Range: 30–185A (220V) / 30–230A (380V)
• Open Circuit Voltage: 65V DC
• Duty Cycle: 100%@230A
• Max Electrode: 5.0mm
• IP Grade: IP21S | Insulation Grade: F
• Dimensions: 510×260×440mm | Weight: 8.5kg / 11.7kg (N.W/G.W)

⚙️ Why Choose the MMA-300 Stick Welder?

1. True 100% Duty Cycle @ 230A

Continuous welding with no cooling breaks—perfect for industrial workloads and long-hour operations.

2. Dual Voltage 220V / 380V Auto Switching

Works in different job sites automatically—no manual switching required.

3. Advanced IGBT Inverter Technology

Ensures stable arc, reduced spatter, and improved weld quality.

4. Hot Start + Arc Force Control

Easy arc ignition and adjustable penetration for different electrode types (6013, 7018, 6010).

Backed by Doughty's commitment to quality and reliability.