The 555 PRO MMA 300 & 400 series are heavy-duty welding machines designed for professional metal fabrication and industrial applications. Engineered for manual metal arc (MMA) welding, these machines deliver reliable, consistent performance across a wide range of electrode types and material thicknesses. With robust construction and advanced electronics, the 555 PRO series ensures stable arcs, precise control, and high-quality welds even under demanding conditions.Both models feature user-friendly interfaces, allowing easy adjustment of welding parameters for different metals and electrode sizes. The MMA 300 is ideal for medium-duty welding tasks, while the MMA 400 is suited for heavier applications requiring higher output and extended duty cycles. Built for durability and efficiency, the 555 PRO series provides professional welders with a dependable tool that enhances productivity and weld quality in workshops, construction sites, and industrial facilities.
