Description
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TELWIN LINEAR 350i 230V/400V Welder: Reliable Power and Precision for Professionals! ⚡?
Imagine a workday where every welded joint is perfect and your tool never lets you down, regardless of conditions and available power. With the TELWIN LINEAR 350i inverter welder, this scenario becomes a reality. Designed for the most demanding welding professionals, this machine combines powerful power, Italian engineering precision and unmatched versatility to become a key component of your workshop or construction site.
The TELWIN LINEAR 350i is the answer to the daily challenges of welders who need a reliable partner for working with a variety of materials and in variable conditions. Thanks to advanced inverter technology, the device guarantees a stable arc, excellent fusion and minimal spatter, resulting in higher weld quality and significant savings in finishing time. Forget about compromises – the LINEAR 350i delivers the pure power and control needed for the most challenging projects.
Innovative features, such as the ability to be powered by both single-phase 230V and three-phase 400V mains, make this welder extremely flexible. Whether you’re working in a well-equipped workshop or in the field with limited access to power infrastructure, the LINEAR 350i is ready for action. It’s not just a convenience, but a real extension of your operational capabilities.
In addition, the built-in Arc Force, Hot Start and Anti-Stick functions dynamically optimize the process of shielded metal electrode (MMA) welding by facilitating arc ignition, stabilizing the arc during operation and preventing electrode sticking. For the professional, this means smoother work, less downtime and top-quality welds, even when welding in difficult positions or with demanding materials like stainless steel, cast iron or aluminum (using the right electrodes). Invest in the TELWIN LINEAR 350i and feel the difference made by equipment created by experts for experts. ??️
Explore the Advanced Capabilities of the TELWIN LINEAR 350i 230V/400V
?? Power Flexibility: 230V and 400V in One Device
One of the greatest strengths of the TELWIN LINEAR 350i welder is its ability to operate with two supply voltage standards: single-phase 230V and three-phase 400V. This unique feature eliminates the dilemma of choosing a machine in terms of the available power infrastructure. Whether you’re working in a modern industrial facility with access to a three-phase power supply, or executing a job in the field where the only power source is a 230V outlet, the LINEAR 350i is ready to go.
The system automatically recognizes the input voltage and adjusts the operating parameters, ensuring optimal performance in both configurations. For the professional, this means unprecedented mobility and versatility. You no longer need to invest in two separate units or worry about adapters or power losses. With the LINEAR 350i, you can rest assured that your welder will meet any power challenge, allowing you to focus on the quality of your work. This flexibility translates directly into time savings, reduced logistics costs and the ability to take on a wider range of jobs.
?✨ Intelligent Arc Control: Arc Force, Hot Start, Anti-Stick technologies.
The TELWIN LINEAR 350i is equipped with advanced, adjustable MMA welding support functions that significantly improve the comfort and quality of work. The Hot Start function delivers increased current at the time of arc ignition, making it easier to start welding, especially with difficult electrodes or contaminated surfaces. This helps the welder avoid problems with electrode “sticking” at the start.
During welding, the adjustable Arc Force (arc dynamics) function automatically increases the welding current when the arc becomes shorter, preventing it from extinguishing and sticking the electrode. This enables welding with a more stable and concentrated arc, even in difficult positions. The Anti-Stick function, on the other hand, immediately reduces the welding current when the electrode is short-circuited to the material, allowing the electrode to be easily detached without damage or overheating.
For the professional, these intelligent systems mean smoother operation, fewer welding defects, better control of the weld pool and less fatigue. The result is higher productivity, material savings (fewer wasted electrodes) and welds of excellent quality that meet the highest standards.
?? Reliability in Industrial Edition: Design and Security
TELWIN LINEAR 350i is a machine built for hard work. Its rugged mechanical design and high-quality electronic components guarantee resistance to harsh conditions in industrial environments, construction sites or workshops. The IP23 rating means protection against access to hazardous parts by wire, protection against splashing water falling at any angle up to 60° from the vertical on either side.
A key aspect of reliability is a comprehensive protection system. The welder is protected against overheating (thermostatic protection with indication), power surges, under-voltage and current overload. What’s more, the LINEAR 350i is designed to work with generators, tolerating voltage fluctuations of +/- 15%.
For the professional user, this design and safety features translate into long and trouble-free operation, minimized downtime and safe work. It’s an investment that pays for itself through reliability and readiness to work in even the most demanding conditions, protecting both the operator and the machine itself.
Technical Specifications
| Parameter | Value |
|---|---|
| ? Key Technical Parameters | |
| Full Model Name | TELWIN LINEAR 350i 230V/400V |
| Catalog number | 816181 |
| EAN code | 8056151818751 |
| Supply voltage | 230V (50/60Hz, 1-phase) / 400V (50/60Hz, 3-phase) |
| Welding current adjustment range (MMA) | 10 – 270 A (for 230V) / 10 – 320 A (for 400V) |
| Maximum current (40°C) | 270 A at 30% (230V) / 320 A at 35% (400V) |
| Current at 60% operation (40°C) | 200 A (230V) / 240 A (400V) |
| Current at 100% operation (40°C) | 160 A (230V) / 180 A (400V) |
| Idle voltage | 75 V |
| Maximum input power | 8 kW (230V) / 10 kW (400V) |
| Power consumed at 60% | 4.5 kW (230V) / 6 kW (400V) |
| Power factor (cos φ) | 0.7 (230V) / 0.9 (400V) |
| Welding electrode diameter (MMA) | 1.6 – 6.0 mm |
| Welding electrode diameter (TIG DC LIFT) | (no manufacturer’s data, typically 1.0 – 4.0 mm) |
| Insulation class | H |
| Degree of protection of the housing | IP23 |
| Dimensions (L x S x W) | 530 x 240 x 450 mm |
| Weight | 21 kg |
| Cooling | Fan |
| Features | Arc Force (adjustable), Hot Start (adjustable), Anti-Stick, TIG DC LIFT welding capability, thermostatic protection, overvoltage, undervoltage, overcurrent, motogenerator (+/-15%). |
Key Features and Benefits
- ⚡ Dual Power Supply Voltage (230V/400V): The welder automatically adjusts to the available power source, single-phase 230V or three-phase 400V. This versatility eliminates power compatibility problems in a variety of workplaces – from the workshop to the field. For the professional, this means maximum mobility, the ability to take on any job regardless of infrastructure and no need for multiple devices.
- ? Advanced Inverter Technology: At the heart of the LINEAR 350i is a state-of-the-art inverter circuit that provides precise control of welding current, its high stability and dynamic response. This translates into excellent weld quality, smooth face, deep fusion and reduced spatter. The welder gains easier arc guidance, less consumption of auxiliary materials and shorter post-weld processing time.
- ? Dynamic Arc Support Functions (Arc Force, Hot Start, Anti-Stick): The adjustable Arc Force function prevents arc extinction and ensures arc stability in short arc welding. Hot Start facilitates electrode ignition by momentarily increasing the initial current. Anti-Stick protects the electrode from sticking to the material in case of a short circuit. For the expert, this guarantees smooth operation, fewer weld defects and increased efficiency, even in difficult conditions or when working with less experienced personnel.
- ? High Power and Duty Cycle: The device offers a maximum welding current of up to 320A (at 400V), allowing the welding of thick materials and the use of large diameter electrodes (up to 6mm). A robust duty cycle (e.g., 240A at 60% for 400V) allows for prolonged, intensive work without the risk of overheating. The professional can take on demanding tasks in heavy industry, steel construction and manufacturing, counting on continuous and efficient operation.
- ?️ Robust Design and Safety Features: The TELWIN LINEAR 350i is built for harsh industrial environments, which guarantees its durability and reliability. It is equipped with a number of protections: thermostatic, overvoltage, undervoltage, overcurrent and protection when operating with a motor generator (+/- 15%). For the user, this means safe operation, protection of investment and long life of the device even under intensive operation.
- ⚙️ Versatility of Welding Methods (MMA and TIG DC LIFT): In addition to excellent performance for MMA (covered electrode) welding with various types of electrodes (rutile, alkaline, stainless, cast iron), the device also enables TIG direct current (DC) welding with friction ignition (LIFT). This gives the welder the flexibility to choose the method for a specific task, allowing high quality welds on stainless or carbon steel, for example.
Product Application
- ? Welding of heavy and medium steel structures in industry and construction sites.
- ?️ Overhaul and maintenance work in manufacturing and power plants.
- ? Construction and repair of ships and offshore structures.
- ? Production and repair of agricultural machinery and heavy equipment.
- ?️ Installation of pipelines and industrial installations.
- ? Advanced workshop work requiring high power and precision (e.g., MMA welding of stainless steel, cast iron).
- ? TIG DC LIFT welding of carbon steel and stainless steel parts.
Contents of the Kit
- (Note: Standard kit contents may vary from distributor to distributor. The following is a typical basic kit for this type of device).
- ? TELWIN LINEAR 350i 230V/400V welding machine (816181)
- ?️ Electrode (MMA) welding cable (e.g. 3m)
- ? Ground wire with clamp (e.g. 2m)
- ? Operating instructions and warranty card
Summary: TELWIN LINEAR 350i 230V/400V – Your Best Investment
The TELWIN LINEAR 350i is not just a welding machine – it’s your reliable partner in the pursuit of welding perfection. With a combination of impressive power, the flexibility of 230V/400V power supply and intelligent arc assist functions, this machine raises the standards of productivity and quality in professional welding. Built for the toughest tasks, it guarantees reliability and precision you can rely on every day.
Don’t let equipment limitations inhibit your potential. Choose the TELWIN LINEAR 350i and invest in technology that will realistically improve your workflow, increase project profitability and ensure the highest quality welds. Contact us today to learn more and join the ranks of professionals who trust the TELWIN brand! ?
Part number: 816181
EAN code: 8056151818751





















