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Kemppi Master T 355 DC Air-Cooled TIG/MMA Welder – 400V, 3-Phase
At Premier Welding we aim to offer amazing value for top quality products. The Kemppi Master T 355 DC is a professional DC TIG and MMA welding power source delivering up to 350 amps from a 3-phase 400 V power supply. Designed for demanding industrial environments, this air-cooled machine offers outstanding arc stability, precise control, and high energy efficiency for production, fabrication, and maintenance welding.
Manufactured in Finland, the Master T 355 DC combines Kemppi’s advanced inverter technology with a robust, ergonomic design. Smooth arc ignition, low noise operation, and excellent control at both low and high current levels ensure consistent, high-quality welds across a wide range of applications.
Package Includes
Kemppi power source 7" TFT control panel (AC/DC compatible) Kemppi Flexlite TX 225G TIG torch – 4 m or 8m Earth return cable (35 mm² × 5 m)
This is ideal for:
Heavy-duty industrial fabrication Production and maintenance welding Workshops and site-based applications DC TIG welding requiring high output and precision MMA (stick) welding with large diameter electrodes
What Does it Weld?
Mild steel Stainless steel Carbon steels Copper and copper alloys (DC TIG) MMA electrodes from 1.6 – 6.0 mm
Features
DC TIG and MMA welding capability Maximum output 350 A from a 3-phase supply Smooth, reliable arc ignition with excellent arc stability Low noise levels for improved operator comfort High energy efficiency (up to 89%) Compatible with air-cooled TIG torches Wired and wireless remote control capability Bluetooth connectivity Kemppi Remote-Bus support Robust industrial design with ergonomic handling Designed and manufactured in Finland
Technical Data
Power Supply
Mains connection voltage: 380–460 V ±10 % Mains connection phases: 3-phase, 50/60 Hz Mains fuse: 16 A Rated maximum input power (S1max): 12 kVA Maximum supply current (I1max): 16–13 A Effective supply current (I1eff): 11–10 A Recommended minimum generator size: 20 kVA Output – TIG
Output range: 5 A / 1 V – 350 A / 38 V Duty cycle @ 40 °C (max current): 30% @ 350 A 60% duty cycle: 230 A 100% duty cycle: 190 A Output – MMA
Output range: 10 A / 10 V – 270 A / 39 V Duty cycle @ 40 °C (max current): 35% @ 270 A 60% duty cycle: 230 A 100% duty cycle: 190 A Electrical Performance
No-load voltage (MMA/TIG): 75–95 V Power factor (λ): 0.93 Efficiency (η): 89 % Idle power consumption: 20 W Cooling & Connectivity
Voltage supply for cooling unit: 380–460 V Welding connection type: R1/4 Wired communication: Analog, Kemppi Remote-Bus Wireless communication: Bluetooth (2.4 GHz, 10 dBm) Environmental
Operating temperature: -20 to +40 °C Storage temperature: -40 to +60 °C Degree of protection: IP23 EMC class: A Dimensions & Weight
Dimensions (L × W × H): 544 × 205 × 443 mm Weight (without accessories): 21 kg
Why Buy the Kemppi Master T 355 DC?
The Kemppi Master T 355 DC is engineered for professionals who need powerful DC TIG and MMA welding with absolute reliability. Delivering up to 350 A, it combines high duty cycles, excellent arc control, and energy-efficient performance in a compact, robust machine. With Finnish build quality and advanced control technology, it’s a dependable long-term investment for serious industrial welding applications.
Kemppi offers a 3-year warranty on power sources, wire feeders, and cooling units across all product families. To activate the warranty, register your product within two months of purchase.
Are Kemppi welders suitable for professional use?
Yes, Kemppi welders are designed for professional and industrial applications, providing advanced features and reliability for demanding welding tasks.
What power supply do Kemppi welders require?
Kemppi welders operate on various power supplies, including 230V single-phase and 400V three-phase, depending on the model. Refer to the specific product specifications for details.
What materials can I weld with a Kemppi welder?
Kemppi welders are suitable for welding materials such as steel, stainless steel, and aluminium. The compatibility depends on the model and welding process used.
What is the duty cycle on a Kemppi welder?
Duty cycles vary by model. For example, the Minarc Evo 180 has a duty cycle of 30% at 180 amps for MMA welding. Consult the product specifications for exact figures.
How energy efficient are Kemppi welders?
Kemppi welders utilise inverter technology to enhance energy efficiency, reducing power consumption without compromising performance.
Does Premier Welding offer financing options for Kemppi welders?
Yes, Premier Welding provides financing options, including 0% APR through PayPal for orders over £99, allowing flexible payment plans.
How do I choose the right Kemppi welder for my needs?
Selecting the appropriate Kemppi welder depends on factors such as material type, welding process (MIG, TIG, MMA), and material thickness. Consulting with Premier Welding's team can help identify the best model for your specific applications.
How to choose a welder?
When choosing a welder, consider the type of welding you'll be doing (MIG, TIG, or Stick), the materials you'll work with, and your skill level. Look for a machine with the right amperage range, portability, and safety features. Don’t forget to check reviews!
What equipment do welders use?
Welders use various equipment, including welding machines (MIG, TIG, and stick welders), protective gear (helmets, gloves, and aprons), gas cylinders, welding rods, and accessories like clamps and wire brushes. Proper tools ensure safety and quality in welding projects.
What is a duty cycle on a welder?
The duty cycle on a welder refers to the percentage of time it can operate within a specific period, typically 10 minutes, without overheating. For example, a 60% duty cycle means the welder can run for 6 minutes and must cool for 4 minutes.
What is a multiprocess welder?
A multiprocess welder is a versatile welding machine that can perform various welding techniques, such as MIG, TIG, and stick welding, all in one unit. This flexibility makes it ideal for different projects, allowing users to switch processes easily as needed.
What is amperage in welding?
Amperage in welding refers to the electric current flowing through the welding circuit, measured in amperes (amps). It determines the heat generated during the welding process, influencing penetration and bead shape. Proper amperage is crucial for achieving strong welds.
What is kemppi?
Kemppi is a renowned Finnish manufacturer of welding equipment, known for its innovative technology and high-quality products. They specialise in arc welding solutions, offering a range of machines, accessories, and software designed for professional welders and industries.
What is slag inclusion in welding?
Slag inclusion in welding refers to the presence of non-metallic solid materials, such as slag, trapped within the weld bead. This defect can weaken the weld's integrity, leading to reduced strength and potential failure. Proper technique and cleaning can help prevent it.
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