GRUNDER IGBT-120LI MMA Inverter Welding Machine 120A with Hot Start, Arc Force, Anti-Stick

For the home hobbyist or light professional tackling repairs, fabrication, and DIY metalwork, the GRUNDER IGBT-120LI delivers reliable stick welding performance in a compact, portable package. Its IGBT inverter technology ensures stable arc characteristics and efficient power conversion, making it easy to achieve clean welds on steel, stainless steel, and cast iron.

Key specifications

• Welding process: MMA (Manual Metal Arc) / Stick
• Technology: IGBT inverter for high efficiency (85%) and power factor 0.73
• Input: 230V AC, 50/60 Hz, single-phase
• Output current range: 20–120 A with 60% duty cycle at 120 A
• Max electrode diameter: 3.2 mm
• Open circuit voltage: 65 V
• Digital ammeter for precise current setting
• Hot Start, Arc Force, and Anti-Stick functions for easier welding
• Forced air cooling and insulation class F
• Protection class IP21S
• Integrated carry handle for portability
• Includes electrode holder, earth clamp, basic welding mask, and wire brush/hammer

Why choose it

The IGBT-120LI stands out for its user-friendly features that reduce common welding frustrations. Hot Start provides a boost at arc initiation to prevent sticking, Arc Force automatically adjusts current to maintain a stable arc even with varying electrode distances, and Anti-Stick shuts off output if the electrode sticks, protecting the machine. Its lightweight design and carry handle make it easy to transport between job sites or store in a workshop.

Ideal use cases

• Home garage repairs: fixing gates, fences, trailers, and garden equipment
• Hobby projects: metal art, furniture, and automotive bodywork
• Light professional tasks: maintenance welding, on-site repairs, and small fabrication
• Educational settings: learning basic stick welding techniques

Good to know

This welder operates on standard 230V household power, so no special electrical installation is needed. The included basic welding mask and chipping hammer/brush provide a starter kit, but we recommend upgrading to an auto-darkening helmet for improved safety and comfort. Always follow proper welding safety procedures, including wearing protective clothing and ensuring adequate ventilation.