Kemppi Master T 355ACDC Air Cooled 350A TIG Welder (400V, 3-Phase)

Kemppi Master T 355 ACDC G TIG/MMA Welder – 400V, 3-Phase

At Premier Welding we aim to offer amazing value for top quality products. The Kemppi Master T 355 ACDC G is a professional AC/DC TIG and MMA welding power source delivering up to 350 amps from a 3-phase 400 V power supply, specifically engineered to be suitable for generator use. Designed for demanding industrial and site environments, this machine delivers excellent arc stability, precise control, and high-duty performance for professional TIG welding applications.

Manufactured in Finland, the Master T 355 ACDC G combines Kemppi’s advanced inverter technology with a robust, ergonomic design. Smooth and reliable arc ignition, reduced noise levels in DC TIG welding, and excellent control at both low and high currents ensure consistent, high-quality welds across a wide range of materials.

As an ACDC model, the Master T 355 ACDC G supports advanced TIG welding features and is ideal for aluminium welding (AC TIG), steel welding (DC TIG), and MMA welding in workshop or generator-powered site conditions.

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:

• Industrial AC TIG welding of aluminium
  DC TIG welding of mild steel and stainless steel
  MMA (stick) welding
  Generator-powered welding applications
  Fabrication, production, and site welding environments
  High-output TIG welding requiring 3-phase power

What Does it Weld?

• Aluminium (AC TIG)
  Mild steel
  Stainless steel
  Carbon steels
  MMA electrodes from 1.6 – 6.0 mm

Features

• AC/DC TIG and MMA welding capability
  3-phase 400 V power supply
  Maximum output 350 A
  Generator-compatible design
  Smooth, stable arc ignition
  Reduced noise levels in DC TIG welding
  Pulse TIG capability (panel dependent)
  Remote control compatibility (hand, foot, and on-torch options)
  Wired and Bluetooth wireless communication
  Kemppi Remote-Bus support
  Robust industrial construction
  Designed and manufactured in Finland

Technical Data

• Kemppi Master T 355 ACDC G

  Mains Connection Voltage:
  380…460 V ±10 %

  Mains Connection Phases:
  3-phase, 50/60 Hz

  Mains Connection Cable Type:
  4G, H07RN-F

  Mains Connection Cable Size:
  2.5 mm²

  Maximum Supply Current [I1max]:
  17…14 A

  Effective Supply Current [I1eff]:
  11…10 A

  Rated Maximum Input Power [S1max]:
  12 kVA

  Mains Fuse:
  16 A

  No-Load Voltage, MMA/TIG:
  75…95 V

  Idle Power:
  20 W

  TIG Output @ +40 °C:
  350 A @ 30% duty cycle
  230 A @ 60% duty cycle
  190 A @ 100% duty cycle

  MMA Output @ +40 °C:
  270 A @ 35% duty cycle
  230 A @ 60% duty cycle
  190 A @ 100% duty cycle

  Output Range, TIG:
  5 A / 1 V … 350 A / 38 V

  Output Range, MMA:
  10 A / 10 V … 270 A / 39 V

  Power Factor at Rated Maximum Current [λ]:
  0.9

  Efficiency at Rated Maximum Current [η]:
  86 %

  EMC Class:
  A

  Minimum Short-Circuit Power of Supply Network [Ssc]:
  1.9 MVA

  Stick Electrode Diameter:
  1.6 … 6.0 mm

  Voltage Supply for Cooling Unit:
  380…460 V

  Welding Connection Type:
  R1/4

  Wired Communication Type:
  Analog, Kemppi Remote-Bus

  Wireless Communication Type:
  Bluetooth

  Transmitter Frequency and Power:
  2400…2483.5 MHz, 10 dBm

  Operating Temperature:
  −20 … +40 °C

  Storage Temperature:
  −40 … +60 °C

  Recommended Minimum Generator Power:
  20 kVA

  Degree of Protection (Fully Installed):
  IP23

  External Dimensions (L × W × H):
  544 × 205 × 443 mm

  Weight (Without Accessories):
  22.5 kg

  Standards:
  IEC 60974-1, -3, -10
  IEC 61000-3-12
  GB 15579.1 

Why Buy the Kemppi Master T 355 ACDC G?

The Kemppi Master T 355 ACDC G is built for professionals who need powerful AC/DC TIG welding with generator compatibility. With a strong 350 A output, reliable arc control, and Finnish-built durability, it is an excellent choice for fabrication, production, and site welding environments where consistent performance and flexibility are essential.