Telwin Spot Welder Comparison: 20/TI vs 200 vs 400

In this article, we’ll compare three popular models: the Telwin Modular 20/TI, the Telwin Digital Modular 230, and the Telwin Digital Modular 400. By the end, you’ll know exactly which welder is best suited to your workshop.

Spot welding is an essential process in sheet metal fabrication, automotive repair and industrial manufacturing. Choosing the correct machine can make all the difference in weld quality, efficiency and ease of use. Telwin offers a range of handheld spot welders designed to meet different needs, from light sheet welding to heavy-duty applications.

In this article, we’ll compare three popular models: the Telwin Modular 20/TI, the Telwin Digital Modular 230, and the Telwin Digital Modular 400. By the end, you’ll know exactly which welder is best suited to your workshop.

Telwin Modular 20/TI – Compact Electronic Control Spot Welder

The Telwin Modular 20/TI is a lightweight and user-friendly spot welder designed for thin sheet metal up to 1+1mm. It uses electronic control to regulate welding time, ensuring consistent results without overcomplicating the process.

Perfect for workshops handling smaller-scale jobs, the Modular 20/TI offers adjustable arm pressure, precise timing, and an ergonomic thermally insulated grip for operator comfort.

Best for: Light sheet metal work, small fabrication tasks, and vehicle body repairs.

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Telwin Digital Modular 230 – Advanced Microprocessor Control

For those who need more flexibility and control, the Telwin Digital Modular 230 is equipped with microprocessor technology and Fuzzy Logic control. This allows the machine to automatically adjust welding current and time based on sheet thickness, making it easier to achieve perfect welds.

The 230 model can weld up to 2+2mm sheet metal, and it includes a pulse operation mode, which is especially useful for high-strength steel (HSS), galvanised, and oxidised sheets. With added thermal protection and selectable continuous or pulse welding, it’s a versatile option for professional workshops.

Best for: Fabricators and automotive repair shops working with a wide variety of sheet materials.

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Telwin Digital Modular 400 – Heavy-Duty Industrial Spot Welder

Built for demanding environments, the Telwin Digital Modular 400 takes all the advanced features of the 230 model but operates on a 400V double-phase power supply. This makes it ideal for industrial use where more robust performance is required.

Like the 230, it offers automatic regulation of welding parameters and pulse welding for advanced materials. Slightly lighter in weight than the 230, it’s easy to handle while delivering the power and durability needed for continuous, heavy-duty use.

Best for: Industrial workshops and production environments handling thicker sheet metal and requiring 400V power.

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Telwin Spot Welder Comparison Table

Which Telwin Spot Welder Should You Choose?

• Choose the Telwin Modular 20/TI if you need a lightweight, easy-to-use welder for thin sheet applications.
• Choose the Telwin Digital Modular 230 if you want automatic control adjustments and versatility for working with advanced materials.
• Choose the Telwin Digital Modular 400 if your workshop requires a powerful, industrial-grade welder with 400V input.

Final Thoughts

Telwin’s range of handheld spot welders provides options for every type of user - from small repair shops to large-scale production environments. Whether you prioritise simplicity, advanced digital control, or industrial power, there’s a Telwin spot welder designed to meet your needs.

Explore the full range today and invest in a machine that will deliver consistent, high-quality spot welds for years to come.