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TELWIN SUPERIOR TIG 421 DC: Professional Precision and Outstanding Power in TIG DC Welding at 400V
Meet the TELWIN SUPERIOR TIG 421 DC, a welding solution without compromise, built for the most demanding professionals and for industrial work. This advanced TIG DC inverter welder with a three-phase supply (400V) is the essence of Italian engineering and of decades of experience at Telwin. It was designed to meet the hardest challenges, from the precise joining of stainless steels to the welding of load bearing structures in carbon steel, copper or titanium.
Imagine work where every weld is perfect, control over the arc is absolute and the output lets you finish projects faster and to the highest standard. The SUPERIOR TIG 421 DC is the tool that makes that picture real. Thanks to advanced functions such as precise HF/LIFT arc ignition, an extensive pulse mode and the ability to weld in MMA with stick electrodes, you gain the flexibility you need in a fast moving production or workshop setting.
When you invest in the TELWIN SUPERIOR TIG 421 DC, you invest in reliable and repeatable welding processes. The machine carries a set of protections (thermal, overvoltage, undervoltage, overcurrent) and a solid construction that guarantees a long service life even under intensive use. The intuitive control panel with a digital display gives easy access to every parameter and lets you match the welding characteristic exactly to the task and the material.
Whether you work on complex pipe installations, precise machine parts or heavy steel structures, the SUPERIOR TIG 421 DC will give you the power and the control you need. Forget compromises and choose technology that raises the standard of your work and lets you reach mastery in every detail. The TIG welding accessories included add further value to the set and make it ready for work straight away.
Advanced Capabilities of the TELWIN SUPERIOR TIG 421 DC 400V + ACC.
Precision and Control in TIG DC Welding at the Highest Level
The TELWIN SUPERIOR TIG 421 DC redefines what precision means in TIG welding with direct current. The advanced microprocessor that controls the inverter guarantees an unusually stable and concentrated welding arc, which is the key when working with demanding materials such as stainless steel, nickel alloys or titanium. The operator has full control over the process thanks to precise welding current adjustment from as low as 10A, which makes it possible to weld both very thin and thick parts.
Functions such as slope up and slope down current time control give a gentle start and finish to the weld and keep down the risk of welding defects such as craters or cracks. In addition, precise adjustment of the shielding gas pre-flow and post-flow times (Pre Gas / Post Gas) gives the best protection of the weld pool and the tungsten electrode, which shows in the cleanliness and the strength of the weld. This is the right tool for professionals who value the highest quality and repeatable results.
Mastery of TIG Pulse Welding for Perfect Results
The TIG Pulse function in the SUPERIOR TIG 421 DC is a genuine step forward for welders who aim at perfection. It allows welding with a pulsed current, where peak current and base current alternate. The operator can make precise adjustments to the pulse frequency, the base current and the pulse duty ratio. This control brings a considerable reduction of the heat put into the material, which is invaluable when welding thin sheet (less distortion and fewer burn throughs) and materials that are sensitive to high temperature.
TIG pulse welding with the SUPERIOR TIG 421 DC also means better control over the weld pool, above all in constrained positions (for example overhead or vertical). The result is welds with an excellent appearance, a clear ripple pattern and better metallurgical properties. This function is valued in particular in sectors where the look and the quality of the weld come first, for example in the production of stainless steel railings, decorative parts or in the food and pharmaceutical industries.
Industrial Reliability and Intelligent Protections
The TELWIN SUPERIOR TIG 421 DC was designed for continuous and trouble free work in hard industrial conditions. The three-phase 400V supply guarantees stable output parameters even under heavy load. The solid metal housing with protection rating IP23 keeps dust and moisture away from the internal components, which is the key in workshop and production environments.
The machine carries a complete protection system, including thermal protection, protection against a supply voltage that is too high or too low, and overcurrent protection. These intelligent systems monitor the welder in real time and switch it off automatically when needed, protecting both the equipment and the operator. On top of that, the SUPERIOR TIG 421 DC is prepared to run from generator sets (with a voltage tolerance of +/- 15%), which widens its mobility and its use on site.
Ergonomics and a Complete Accessory Set for Immediate Readiness
Working with the TELWIN SUPERIOR TIG 421 DC is a pleasure, even during long duty cycles. Despite its power, the machine has a well thought out construction and relatively compact dimensions for its class, which makes it easier to move around the workshop or the production hall. The intuitive control panel with a digital display and clear pictograms makes setting even the advanced parameters quick and straightforward.
Another important strength is the rich standard equipment marked "+ ACC.". The set contains a professional TIG welding torch (for example type ST26 or an equivalent for 400A), an earth cable with clamp, a hose for connecting the shielding gas and often a basic set of consumables for the TIG torch (for example electrodes, ceramic nozzles, collets). Straight after unpacking, the welder is therefore ready to take on the hardest welding tasks, which saves time and the extra cost of putting the equipment together.
Technical Specification
| Parameter | Value |
|---|---|
| Key Technical Parameters | |
| Catalogue number | 816132 |
| EAN code | 8004897997704 |
| Supply voltage | 3~ 400V 50/60Hz |
| TIG DC welding current range | 10 - 400 A |
| Maximum TIG DC welding current (at 40°C) | 400 A (duty cycle 40%) |
| TIG DC welding current (at 40°C, duty cycle 60%) | 310 A |
| MMA welding current range | 10 - 400 A |
| Maximum MMA welding current (at 40°C) | 400 A (duty cycle 40%) |
| MMA welding current (at 40°C, duty cycle 60%) | 310 A |
| Open circuit voltage | 66 V (TIG) / 68 V (MMA) |
| Maximum power input | 15 kW |
| Power input (duty cycle 60%) | 11 kW |
| Power factor (cos φ) | 0.9 |
| Efficiency (η) | 0.86 |
| TIG electrode diameter | 1.0 - 4.0 mm |
| MMA electrode diameter | 1.6 - 6.0 mm (rutile, basic, stainless, cast iron) |
| Protection rating | IP23 |
| Dimensions (L x W x H) | 530 x 240 x 450 mm |
| Weight | 29.6 kg |
| TIG arc ignition | LIFT / HF (high frequency) |
| Operating modes | 2T/4T, Bi-Level (two current levels) |
| TIG functions | TIG Pulse, Arc dynamics adjustment, Slope up/down time adjustment, Gas pre-flow and post-flow time adjustment, Spot welding (Spot) |
| MMA functions | Arc Force, Hot Start, Anti-Stick |
| Protections | thermal, overvoltage, undervoltage, overcurrent, generator overload ( +/- 15%) |
Key Features and Benefits
- Impressive Industrial Power and Output: With a maximum welding current of 400A and a solid duty cycle (400A@40%, 310A@60%), the SUPERIOR TIG 421 DC is built for intensive continuous work. For a professional this means large projects can be carried out with no worry about the machine overheating, higher productivity and the ability to weld thick materials, which shortens the time an order takes.
- Advanced TIG DC Arc Control with Pulse: The machine offers full control over the arc parameters, including an advanced pulse mode with adjustment of frequency, balance and base current. That allows welding of very thin materials with minimal distortion, an excellent visual quality of the welds, better control of the weld pool in constrained positions and the welding of materials that are sensitive to overheating.
- Flexible Use (TIG DC & MMA): Besides specialist TIG DC welding (carbon steels, stainless steels, copper, titanium), the welder also offers full MMA welding with stick electrodes (rutile, basic, stainless, cast iron). This flexibility makes it the right answer for workshops and companies that need one reliable machine for varied tasks, which cuts the cost of investing in several machines.
- TELWIN Reliability and Durability: The SUPERIOR TIG 421 DC is a byword for durability. A solid construction, protection rating IP23, a number of protections (thermal, overvoltage, undervoltage, overcurrent) and top quality components guarantee trouble free work even in hard industrial conditions. It is an investment that brings peace of mind and keeps production stoppages to a minimum.
- Intuitive Operation and Precise Adjustment: The digital control panel with a clear display allows easy and precise setting of all the welding parameters, including advanced TIG functions such as slope up and slope down current time, gas flow before and after welding, or the spot welding function. Even complicated settings therefore become simple, which shortens the preparation time and lets you focus on the quality of the weld.
- Stable Arc Ignition (HF/LIFT) and Support Functions: The choice between non contact ignition with high frequency (HF) and contact LIFT ignition gives a clean start to the welding process with no tungsten contamination of the material. In MMA mode, the Arc Force (arc dynamics), Hot Start and Anti-Stick functions make the work considerably easier and improve the quality of the joints.
Product Applications
- Heavy industry and the production of steel structures (bridges, halls, machines)
- Metalworking and mechanical workshops with high quality requirements
- Production and assembly of pipelines and pressure vessels (stainless steel, carbon steel)
- Precision welding in the chemical, food and pharmaceutical industries
- Shipbuilding and offshore (structures, equipment)
- Automotive and motorsport (modifications, specialist repairs)
- Welding of stainless, acid resistant and heat resistant steels
- Reconditioning and repair of machine parts made of copper, titanium and nickel alloys
Set Contents
- TELWIN SUPERIOR TIG 421 DC 400V welder (816132)
- Professional TIG welding torch (gas cooled, for example ST26 or a type suited to 400A, length usually 4m or 8m - depending on the exact configuration of "ACC.")
- Earth cable with clamp
- Gas pressure regulator with two gauges (or a gas hose, depending on the specification of "ACC.")
- Starter set of consumables for the TIG torch (for example tungsten electrodes, ceramic nozzles, collets, collet bodies, back cap)
- Operating manual
Summary: TELWIN SUPERIOR TIG 421 DC 400V + ACC. - Your Best Investment
The TELWIN SUPERIOR TIG 421 DC is not only a welder, it is your partner on the way to welding perfection. The strong 400A output, the outstanding precision of TIG DC arc control with an advanced pulse and the legendary Italian reliability make it the first choice for professionals who accept no compromise. Invest in technology that will change the way you work, raise its quality and let you carry out the most ambitious projects.
Contact us today to learn more about the TELWIN SUPERIOR TIG 421 DC and join the specialists who have put their trust in the Telwin brand.
Catalogue number: 816132
EAN code: 8004897997704
