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MLR400 Welding Machine
The MLR400 is a state-of-the-art, heavy-duty, air-cooled transformer-based AC welding machine designed for robust performance and versatility. Built with precision engineering and innovative technology, this welding machine offers seamless operation across a range of applications, making it the ideal choice for professionals and industrial users alike.

Key Features
- Dual Input Voltage Compatibility:
- Operates efficiently on both 220V and 440V input voltages.
- Supports 1-phase and 2-phase power supply, providing flexibility in diverse working environments.
- Heavy-Duty Air-Cooled Design:
- Robust air-cooling system ensures efficient heat dissipation, extending machine life and maintaining consistent performance.
- Built for demanding industrial applications, ensuring reliable operation even under continuous usage.
- Versatile Electrode Compatibility:
- Suitable for 3.15mm and 2.5mm welding electrodes.
- Offers high precision and stability for a wide variety of welding tasks, from light fabrication to heavy-duty projects.
- Compact and Portable:
- Ergonomic design with durable handles for easy transportation.
- Rugged construction ensures durability in challenging industrial environments.
- User-Friendly Operation:
- Intuitive controls for quick setup and easy operation.
- Clearly marked indicators for current adjustment and input voltage selection.
- High Performance:
- Delivers consistent output for clean and strong welds.
- High duty cycle to ensure uninterrupted operation for extended periods.
Technical Specifications
Parameter | Specification |
Model | MLR400 |
Input Voltage | 220V / 440V |
Phase | 1-Phase / 2-Phase |
Welding Current Range | 60A – 400A |
Electrode Size | 3.15mm & 2.5mm |
Cooling Type | Air-Cooled |
Duty Cycle | 60% @ 400A |
Insulation Class | Class H |
Application
- Fabrication Workshops: Perfect for creating durable and precise welds.
- Construction Sites: Suitable for heavy-duty welding applications.
- Maintenance & Repair: Reliable for routine maintenance and repair jobs.
- Industrial Manufacturing: Ideal for assembly line and custom manufacturing requirements.
Why Choose MLR400?
- Reliability: Built with KOKO-TAWA’s trusted Japanese technology for unmatched durability.
- Performance: Delivers high-quality welds in a variety of conditions.
- Versatility: Supports multiple electrode sizes and power inputs.
- Efficiency: Designed for prolonged use without overheating or performance dips.