The TELWIN TECNICA 171/S welder is not just a power source – it is an intelligent partner that actively supports the MMA welding process with advanced features. Hot Start is an automatic increase in current when the arc is struck. For the professional, this means a sure start every time, even with wet electrodes, rusted material or at low ambient temperatures. No more frustrating electrode “tapping”!

The Arc Force (arc dynamics) function is the key to welding stability, especially in difficult positions or when using alkaline electrodes. This system monitors the arc voltage and, in case of arc shortening (risk of electrode sticking), automatically increases the welding current, “pushing back” the electrode and maintaining a smooth remelting. The result? Smoother weld face, better fusion and less risk of defects.

Anti-Stick, on the other hand, is a system that protects against the effects of short-circuiting the electrode with the weld material. When sticking occurs, the welder instantly reduces the welding current to a minimum. This allows the electrode to be easily detached without damaging it (reddening it) and without overloading the machine. These three functions work together to make welding not only easier and faster, but most importantly more efficient and produce repeatable, high-quality results.

The TELWIN TECNICA 171/S redefines the concept of a mobile MMA welder. Its light weight of only about 2.8 kg for the unit itself and compact dimensions make it extremely handy. You can easily take it to the roof, scaffolding, a cramped sewer or anywhere where traditional heavy welders would be impractical or impossible to use. This is a huge advantage for installers, service technicians and all professionals working in diverse locations.

The ergonomic handle makes it easy to carry, and the robust design of the case, despite its light weight, provides adequate protection for internal components from mechanical damage typical of construction or workshop conditions. The ACX version, supplied in a dedicated plastic carrying case, takes mobility to an even higher level. The case not only protects the welder and accessories during transport and storage, but also helps keep things organized and ensures that everything you need is always at hand.

This combination of lightweight, compact size and thoughtful protection makes the TECNICA 171/S an ideal choice for welders who value freedom of movement and the ability to move quickly between workstations without compromising on performance or reliability.

An investment in a professional tool is an investment in the continuity and safety of work. The TELWIN TECNICA 171/S welder is equipped with a comprehensive safety system to protect it from adverse operating conditions. Thermostatic protection monitors the temperature of key components and, in the event of overheating, automatically shuts down the device, preventing permanent damage. LED signaling informs the user about the status of the welder.

In addition, the device has surge and undervoltage protection, which protects the electronics from voltage fluctuations in the power supply. This is especially important when operating in unstable networks or when powered by a generator. The TECNICA 171/S is designed to work with generators with a minimum power of 6 kW, which confirms its resilience and flexibility. Overcurrent protection protects against the effects of overloads.

These multi-level protection systems not only extend the life of the welder, but most importantly, they give confidence and peace of mind to professionals who rely on their equipment for daily, often intensive work. When you choose TELWIN, you choose reliability proven by decades of experience and innovation.