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TELWIN TECNICA 171/S: compact power and MMA welding precision for professionals and hobby users.
TELWIN TECNICA 171/S brings together Italian build quality, solid output and easy transport in a compact housing. It is an inverter MMA machine for the experienced professional working on site and for the demanding hobby user who values precision and reliability in the workshop. There is no heavy transformer to move around and no need for a three phase connection. TECNICA 171/S is built for freedom of movement and efficient work.
Inverter technology gives a stable, smooth welding arc, which translates into good weld quality even in less experienced hands. Arc Force, Hot Start and Anti-Stick support the welder at every stage of the job, from fast arc striking, through holding the arc in difficult positions, to preventing the electrode from sticking. That is not only convenience, it is cleaner, faster and calmer work.
TELWIN TECNICA 171/S was designed as a versatile machine. It handles rutile, basic, stainless steel and cast iron covered electrodes with diameters from 1.6 to 4.0 mm. One machine therefore covers many tasks, from precise repairs and maintenance work to welding light steel structures. The model is supplied in a sturdy plastic case together with a set of accessories (ACX), which makes it a mobile solution ready for work straight out of the box.
Reliability is a key feature of TELWIN products. TECNICA 171/S carries a set of protections: thermal, overvoltage, undervoltage and overcurrent. This allows safe work even with an unstable supply or when running from a generator set. It is a welder that will meet your expectations and stay with you on every welding job.
Advanced features of the TELWIN TECNICA 171/S 230V ACX PLASTIC C.CASE
Arc control: Arc Force, Hot Start and Anti-Stick for a clean weld
TELWIN TECNICA 171/S is more than a power source, it supports the MMA process with functions built into the control. Hot Start raises the current automatically at the moment of arc striking. For the professional this means a sure start every time, also with damp electrodes, rusty material or low ambient temperature. No more tapping the electrode against the workpiece.
The Arc Force function (arc dynamics) is the key to a stable arc, above all in difficult positions or with basic electrodes. The system watches the arc voltage and, when the arc shortens and the electrode risks sticking, raises the welding current, pushes the electrode away and keeps the melting steady. The effect is a smoother weld face, better penetration and fewer defects.
Anti-Stick protects against the effects of a short circuit between the electrode and the workpiece. If the electrode sticks, the welder drops the welding current to a minimum. The electrode can then be pulled free without damage, without glowing red, and without loading the machine. These three functions work together to make welding easier, faster and above all repeatable in quality.
Mobility: low weight, compact size and durability on site
TELWIN TECNICA 171/S redefines what a portable MMA welder can be. The machine itself weighs about 2.8 kg and the housing is small, so it is easy to handle. You can take it onto a roof, onto scaffolding, into a narrow service pit or anywhere a heavy conventional welder would be impractical or impossible to use. That is a real advantage for installers, service technicians and everyone who works in changing locations.
The carrying handle makes transport easy, and the housing, light as it is, protects the internal components against the knocks typical of a building site or a workshop. The ACX version, supplied in a dedicated plastic case, adds another level of mobility. The case protects the welder and the accessories during transport and storage, keeps everything in order and makes sure the parts you need are at hand.
Low weight, compact dimensions and sensible protection make TECNICA 171/S a good choice for welders who value freedom of movement and quick changes between work stations, without giving up output or reliability.
TELWIN reliability: protections and work from a generator set
A professional tool is an investment in continuity and safety at work. TELWIN TECNICA 171/S carries a full set of protections that guard it against difficult operating conditions. The thermostatic protection watches the temperature of the key components and switches the machine off when it overheats, which prevents permanent damage. An LED tells the operator the state of the welder.
The machine also has overvoltage and undervoltage protection, which shields the electronics from mains voltage swings. This matters in unstable networks and when the supply comes from a generator set. TECNICA 171/S works with generator sets from 6 kW upwards, which shows how robust and flexible it is. The overcurrent protection covers the effects of overload.
These layered protections extend the life of the welder and, above all, give confidence to professionals who depend on their equipment in daily, often intensive work. With TELWIN you choose reliability backed by decades of experience.
Technical specification
| Parameter | Value |
|---|---|
| Full model name | TELWIN TECNICA 171/S 230V ACX PLASTIC C.CASE |
| Part number | 816235 |
| EAN code | 8056151819604 |
| Supply voltage | 230 V - 1 ph (50/60 Hz) |
| Welding current range | 10 - 150 A |
| Duty cycle (to EN60974-1, 40°C) | |
| Maximum current | 150 A @ 7% |
| Current at 60% duty cycle | 70 A |
| Open circuit voltage (no load) | 72 V |
| Maximum power input | 4.2 kW |
| Power input at 60% duty cycle | 1.5 kW |
| Efficiency | 82% |
| Power factor (cos phi) | 0.6 |
| Minimum generator set power | 6 kW |
| Welding electrode diameter (MMA) | 1.6 - 4.0 mm |
| Electrode types | rutile, basic, stainless steel, cast iron |
| Enclosure protection rating | IP21 |
| Machine dimensions (L x W x H) | 300 x 125 x 225 mm |
| Packaging and case dimensions (L x W x H) | 380 x 420 x 170 mm |
| Weight of the machine alone | approx. 2.8 kg |
| Weight of the set with case and accessories | approx. 5.05 kg |
Key features and benefits
- TELWIN inverter technology: The heart of the welder is a modern inverter circuit that keeps the DC welding current stable regardless of mains voltage swings. That gives close control over the arc, less spatter and welds of good appearance and good mechanical quality. For the professional it means more precision, less time spent on finishing, the option to work with different materials and clearly lower energy use than with a traditional transformer welder.
- Dynamic arc support (Arc Force, Hot Start, Anti-Stick): The machine carries an integrated package of functions that make welding easier. Hot Start raises the current at the beginning of the weld and helps strike the arc even with difficult electrodes or dirty surfaces. Arc Force adjusts the welding current dynamically, stops the arc from going out as it shortens and helps in forced positions. Anti-Stick drops the current to a minimum when the electrode sticks to the material, which protects the electrode and the holder and makes it easy to break free. For the welder this means steady work, fewer errors and higher output, above all on repetitive tasks or in hard conditions.
- Welding with different electrodes: TECNICA 171/S was designed to work with covered electrodes from 1.6 mm to 4.0 mm in diameter. It handles rutile electrodes (universal), basic electrodes (for high strength welds), stainless steel electrodes and cast iron electrodes. That versatility makes it a useful tool for light structural work, repairs of farm machinery and precise joints in acid resistant steel, so one machine replaces several specialised units.
- Mobility and compact build: At about 2.8 kg (machine alone) and with small dimensions, TECNICA 171/S is easy to transport and to handle. The sturdy plastic case included in the ACX set makes carrying simpler and protects the machine and the accessories during transport and storage. For a professional working on site, at height or in tight spaces, this saves effort and keeps the work flexible.
- Full protection and generator operation: TELWIN builds safety and durability into its machines. TECNICA 171/S has thermostatic, overvoltage, undervoltage and overcurrent protection. These guard the welder against damage caused by unstable supply conditions or overload. The machine also runs from generator sets (min. 6 kW), which keeps it usable where there is no fixed mains connection. Work continues even in difficult conditions.
- Ready to work, the ACX set: The ACX version (part number 816235) is supplied as a complete set, ready for immediate use. Besides the welder itself, the sturdy case holds the accessories you need: a welding cable with electrode holder, an earth cable with clamp, a simple welding mask and a chipping hammer with brush. That saves time and extra cost and lets you start work right after unpacking, a practical answer for anyone who wants everything in one package.
Applications
- Workshop and repair work (for example repair of machines, tools, small metal parts)
- Light structural and assembly work on building sites (for example railings, fences, small steel structures)
- Service and maintenance in the field (for example in agriculture, on installations)
- Welding of smaller pipelines and tanks (with suitable electrodes)
- Small batch production and prototyping of metal parts
- Advanced hobby and artistic metal projects
- Maintenance work in shipbuilding (light components)
Summary: TELWIN TECNICA 171/S 230V ACX PLASTIC C.CASE, a sound investment
TELWIN TECNICA 171/S is more than a welder, it is a dependable partner on every welding job. Its compact dimensions, low weight and functions such as Arc Force, Hot Start and Anti-Stick deliver good weld quality together with comfort and efficiency at work. Whether you work in the workshop, on site or on ambitious hobby projects, TECNICA 171/S gives you power and precision you can rely on. The complete set with accessories and case (ACX) means you are ready to work from the first moment.
Raise the quality of your work and invest in technology that professionals around the world already trust. Choose TELWIN TECNICA 171/S and see the difference.
Part number: 816235
EAN code: 8056151819604
