XD500SII Thyristor Professional CO₂/MIG/MAG Welding Machines

OTC DAIHEN XD500SII Microcomputer-Controlled Thyristor Welder

The XD500SII(S-2) is a 500A heavy-duty thyristor-controlled welding machine from OTC DAIHEN, featuring microcomputer-based digital control. It combines the durability of thyristors with the precision of digital technology. Overcurrent protection ensures reliable performance; the integrated remote control/wire feeder design offers convenient and dependable operation. Full 1‑knob presetting and constant penetration control make operation exceptionally simple. An optional current limit program enables on-site weld quality management, meeting the needs of users who demand strict process control. Ideal for medium-to-thick plate welding of mild steel and stainless steel.

✨ Key Technology Advantages

• Microcomputer-controlled thyristor — Digital precision meets thyristor durability for stable, reliable performance.

• Overcurrent protection — Built-in protection circuit ensures safe operation under abnormal conditions.

• Integrated remote/wire feeder — Remote control and wire feeder combined for easy operation and reduced cabling.

• 1‑knob presetting — Simply set the welding current; voltage automatically matches, simplifying parameter adjustment.

• Constant penetration control — Maintains stable penetration despite torch height variations, ensuring consistent weld quality.

• Optional current limit program — Enables on-site weld quality management by monitoring and limiting current.

• High current output — 500A rated current, suitable for medium-to-thick plates.

🔧 Primary Applications

Heavy automotive manufacturing, steel structures, shipbuilding, pressure vessels, general machinery – CO₂/MAG welding of mild steel and stainless steel, especially where process management is required.

📊 OTC DAIHEN XD500SII Technical Specifications & Accessories