Aone Arc 400 Three-Phase Inverter Mma Welding Machine

The AONE ARC 400 is a heavy-duty inverter stick welder built for demanding industrial and structural welding. It delivers up to 400A on a 380V supply, enough to run large electrodes on thick steel plate, pipe and heavy sections. Dedicated arc force and hot start controls let you fine-tune the arc for easy starting and stable, spatter-controlled welding, while the built-in VRD (voltage reduction device) adds an extra level of operator safety. Built to perform and made to last.

Key Features & Benefits

• 40-400A welding current: A very wide range, from medium fabrication to heavy structural welding.
• 380V input: Designed for three-phase supply in workshops, factories and large sites.
• 40% duty cycle: Longer productive welding between cooling periods on demanding jobs.
• Arc force control: Adjusts the arc for stable welding with fewer electrode sticking problems.
• Hot start control: Boosts the current at ignition for easy, reliable arc starting.
• VRD safety function: Lowers the output voltage when not welding to help protect the operator.
• Digital display: Shows the set current clearly for accurate adjustment.
• 65V output no-load voltage: Supports easy arc starting and stable arc performance.
• Class H insulation and IP21S protection: Heat-resistant insulation and a rated enclosure for reliable service in tough workshop conditions.
• Ventilated, rugged housing with carry handle: Good cooling and easy to move around the workshop.

Why Choose the AONE ARC 400?

• Powerful 400A output for thick steel and large electrodes
• Arc force and hot start controls for better weld quality
• Built-in VRD for added operator safety
• 40% duty cycle for longer productive welding
• Rugged industrial build made to last
• Available from Njunex Power Tools with delivery across Kenya

Applications

• Structural Steel Fabrication: Welding beams, columns, trusses and heavy frames.
• Heavy Repair and Maintenance: Repairing large machinery, trailers, excavators and equipment.
• Industrial and Factory Work: Continuous production welding on thick plate and sections.
• Pipe and Tank Fabrication: Welding thicker pipes, tanks and pressure-free vessels.
• Construction and Steel Erection: Heavy site welding where three-phase power is available.