SHIYO WSM-250ND Portable AC/DC TIG & MMA Multi-Process Welder (250A)

Product Overview

The SHIYO WSM-250ND is a top-tier, high-performance multi-process welding machine expertly engineered for both professional fabricators and serious welding enthusiasts. Delivering a powerful 10-250A output range, this advanced AC/DC inverter provides the absolute precision, efficiency, and reliability required for high-integrity structural and cosmetic welds.

Designed with ultimate versatility in mind, the WSM-250ND handles an extensive lineup of materials including stainless steel and carbon steel—making it highly effective for thin and medium plate applications. Packing an incredible amount of power into an ultra-portable 6 kg chassis, it represents the absolute benchmark of "Quality Over Quantity" for shop or on-site projects.

• Micro-Precision Digital Interface: Features an easy-to-use digital display and control knob that allows for exact, fine-tuned adjustments to your welding current, pulse frequency, and duty cycle.

• Incredible Power-to-Weight Ratio: Weighs a mere 6 kg, allowing a single operator to transport a full 250-Amp industrial-grade multi-process machine effortlessly anywhere on the job site.

• Heavy-Duty Duty Cycle: Operates with a robust 60% duty cycle, engineered to handle demanding and continuous workloads without thermal cutouts.

• Industrial Grade Safety & Insulation: Built with Class F insulation and an IP21S housing protection grade to safeguard sensitive internal inverter modules in rugged workshop environments.

• Excellent Material Compatibility: Supports Stick/MMA electrode diameters ranging from 2.6 mm to 4.0 mm, accommodating a wide range of material thicknesses.

Comprehensive Technical Specifications

Complete Premium Accessory Kit Included:

• Heavy-Duty WP26 TIG Torch Assembly

• Industrial Electrode Holder

• High-Conductivity Earth Clamp Set

• High-Precision Argon Gas Regulator

What makes the SHIYO WSM-250ND the best option for portable mild steel and stainless steel welding? The SHIYO WSM-250ND sets a new standard in the single-phase welding inverter market by solving the biggest problem in high-capacity 

SHIYO completely bypasses this limitation by squeezing a highly advanced DC pulse inverter core into an incredibly compact frame weighing only 6 kg. This allows operators to easily transport true industrial capabilities anywhere on a job site.

By offering a highly responsive control knob coupled with a bright digital display, the machine gives users the power to precisely dial in pulse frequency and duty cycle profiles. This extreme fine-tuning is absolutely critical for thin and medium plates of non-ferrous metals like aluminum and copper, or heat-sensitive metals like stainless steel, effectively eliminating the risk of material warping or burn-through. Drawing a highly optimized 0.93 power factor at an outstanding 85% energy efficiency rating, it stands as a rugged, low-maintenance, and highly secure industrial tool that directly maximizes workflow productivity while lowering operational utility costs