KEYGREE Welding Machine Model ARC-400

The ​ARC-400​ is a professional-grade ​DC inverter welding machine​ featuring advanced ​IGBT module technology​ for reliable and efficient performance. It supports both ​MMA and Lift TIG welding, with ​adjustable arc-force​ and ​hot start​ functions to optimize arc stability and ease of ignition. The unit is equipped with comprehensive protection systems, including ​undervoltage, overvoltage, and overcurrent safeguards, ensuring stable operation under various power conditions. With ​VRD (Voltage Reduction Device) ON/OFF​ capability and ​wired remote control, it enhances operator safety and convenience. Designed for demanding environments, the ARC-400 features ​multiple insulation materials​ to protect its PCB and main circuit, along with ​long welding cable support (up to 100m)​​ and ​generator compatibility, making it ideal for both workshop and field applications.

VRD FUNCTION

The VRD (Open Circuit Voltage Reduction) feature improves safety and eliminates the risk of electric shock to the welder. The welding process becomes safer in confined spaces and when welding in high humidity conditions.

AIR FORCE

ARC FORCE dynamically adjusts welding current to stabilize the MMA arc, preventing sticking and improving penetration. It automatically boosts current during arc length changes for consistent performance, especially in vertical/overhead welding.

OVERLOAD PRODUCTION

Automatically cuts power when current or temperature exceeds safe limits to protect the welder and components.Prevents damage from overheating or overcurrent.Extends machine lifespan.Fault codes display on LCD for quick troubleshooting.

REMOTE CONNECTOR

During arc welding, when both hands are occupied, allows the welder to control the welding current during operation. This creates the conditions for obtaining the highest quality of the weld and increases productivity.

2-IN-1 VERSATILITY

In addition to the main MMA mode, the model also has an additional LIFT TIG welding mode.