KEMPPI MASTER T 245 ACDC GM AU

Kemppi Master T 245 ACDC GM AU — Professional Single-Phase AC/DC TIG Welder

The Kemppi Master T 245 ACDC GM AU is a professional single-phase AC/DC TIG welder delivering 240 A from a 240 V supply. Multi-voltage, generator-compatible, VRD-compliant for Australia. Features MAX WeldClean, DeMagnetization, Double Pulse, and Weld Assist. Ideal for aluminium, stainless steel, and site welding.

What Is the Kemppi Master T 245 ACDC GM AU?

The Kemppi Master T 245 ACDC GM AU is a professional single-phase AC/DC TIG welder purpose-built for the Australian market. Delivering 240 A of welding output from a standard 240 V single-phase power supply, it is the most portable and site-versatile model in the Kemppi Master T series.

Three key features set this model apart from the standard 245 ACDC:

• GM — Generator compatible and Multi-voltage: the machine runs on 240 V mains or from a generator, and also accepts a 110 V low-range input, making it equally at home on construction sites, in remote locations, and in urban workshops.
• AU — Australian market specification: fitted with an Australian mains plug and VRD (Voltage Reduction Device) permanently locked on, meeting Australian workplace health and safety requirements.
• Single-phase convenience: no 3-phase infrastructure required, enabling professional AC/DC TIG welding virtually anywhere a power outlet or generator is available.

Despite weighing just 19.1 kg, the Master T 245 ACDC GM AU carries the full feature set of Kemppi's premium Master T platform — including MAX WeldClean, DeMagnetization mode, Double Pulse, Weld Assist, and Optima AC — making it one of the most capable portable TIG welding machines available in Australia.

Designed and manufactured in Finland, it complies with AS 60974.1-2020 and relevant IEC standards.

Key Features of the Kemppi Master T 245 ACDC GM AU

AC and DC TIG Welding in One Machine

The Master T 245 ACDC GM AU supports both AC TIG welding for aluminium and aluminium alloys, and DC TIG welding for stainless steel, mild steel, copper, and other metals — covering the full range of precision TIG applications from a single, compact power source.

Multi-Voltage Operation (GM)

The GM model is equipped with a multi-voltage input that accepts both 240 V ±10% (standard Australian mains) and 110 V ±10% (low-range input for site and international use). At 240 V, it delivers up to 240 A TIG output; at 110 V it delivers up to 130 A — giving welders reliable performance across a wide range of power sources.

Generator Compatible (G)

The Master T 245 ACDC GM AU is rated for generator use with a recommended minimum generator power of 8 kVA — making it the ideal choice for site welders, maintenance professionals, and contractors working in locations without reliable mains power access.

VRD Locked On — Australian Safety Compliance

The AU model has its Voltage Reduction Device (VRD) permanently engaged, reducing the no-load MMA voltage to 23 V. This meets Australian occupational health and safety requirements for welding in confined spaces and on construction sites, providing an additional layer of arc safety for operators.

MAX WeldClean — Electrolytic Weld Cleaning Built In

Every Master T ACDC model includes MAX WeldClean, a built-in electrolytic cleaning mode that removes oxidation and discolouration from stainless steel welds — making them customer-ready without additional post-processing equipment or chemical treatments. This saves significant time and cost on finishing work in fabrication, food-grade, and architectural applications.

DeMagnetization Mode

The Master T 245 ACDC GM AU includes a dedicated DeMagnetization process that eliminates residual magnetic fields in parent material — a common issue when workpieces have been lifted with magnetic equipment or operated near heavy electrical machinery. Removing magnetism restores consistent arc stability and directional control.

Double Pulse TIG

Double Pulse alternates between two pulse cycles to deliver up to 30% faster welding speed and 20% reduced heat input compared to standard pulsed TIG. It minimises distortion, lowers weld costs, and produces a visually superior weld seam — ideal for both DC hand welding and mechanised applications.

Optima AC Waveform

Optima AC is Kemppi's proprietary AC TIG waveform that blends the characteristics of traditional sine and square waveforms. Welders can freely choose between sine, square, or Optima AC depending on the aluminium alloy and application — providing unmatched control over the AC welding arc.

MicroTack

MicroTack delivers fast, precise tacking with minimum heat input in both AC and DC TIG welding. Ideal for repetitive tacking on thin sheet materials, it can be set between 1 and 5 pulse cycles or continuous cycle mode, with independently adjustable current and arc cycle time from 1 to 200 ms — ensuring consistent, controlled results every time.

Weld Assist — Intelligent Parameter Setup

Weld Assist walks operators through a simple on-screen setup — selecting material type, plate thickness, joint type, and welding position — and automatically configures the optimal welding parameters. It also provides recommendations for electrode size, filler wire, gas flow, groove type, pass profile, and travel speed. Weld Assist supports pWPS creation for quality-managed environments and is particularly valuable for lower-frequency TIG welding tasks where manual parameter knowledge may be limited.

AutoCool — Dynamic Cooling Management

AutoCool intelligently modulates fan speeds and water cooler run times based on actual welding load and duration, reducing electrical power consumption and operating noise. Cooling run times adjust between 15 seconds and 4 minutes, optimising energy use throughout the welding shift.

Auto Pulse

Auto Pulse simplifies pulsed TIG welding by requiring only the welding current to be set — the machine manages all other pulse parameters automatically. It is particularly effective for DC current applications where consistent arc pulse behaviour is needed without complex manual configuration.

Reliable Arc Ignition

The Master T 245 ACDC GM AU features engineered ignition technology with adjustable spark force energy, ensuring reliable and repeatable arc starts across a wide range of applications — including low-current work on thin materials and long torch extension setups for confined space or site welding.

Bluetooth Wireless Connectivity

Built-in Bluetooth communication supports compatible wireless remote controls, allowing current adjustment from the torch or a handheld remote without returning to the power source — an important practical advantage during site and positional welding.

Impact Bridge Construction

Built from strong, energy-absorbing, recyclable injection-moulded plastic incorporating impact bridge structures, the Master T 245 ACDC GM AU is engineered to survive the everyday knocks and drops of site and workshop use while remaining lightweight and easy to carry at 19.1 kg.

Optional 7" TFT Control Panel

When paired with the optional full-colour 7" TFT control panel — protected by a 3 mm armour shield plate — welders gain access to fast and accurate parameter setting via Weld Assist, up to 99 memory channels per welding process, and full waveform customisation. Alternative touch-button control panels are also available.

Weld Time Clock

The integrated weld time clock allows total weld cycle measurement and job data recording, enabling welders and supervisors to compare welding times across jobs — useful for quoting, productivity tracking, and time management on multi-weld fabrication projects.

QR Code Product Access

Each Master T power source carries a unique, scannable QR code for instant mobile access to product numbers, serial numbers, technical specifications, ordering codes, consumables lists, user manuals, and local dealer or service contact information.

Optional WeldEye Cloud Integration

The Master T 245 ACDC GM AU is compatible with Kemppi's WeldEye cloud-based welding quality management service, enabling digital recording of welding data, WPS management, and traceability reporting — ideal for quality-certified fabrication and engineering workshops.

Who Is the Kemppi Master T 245 ACDC GM AU For?

The Master T 245 ACDC GM AU is designed for:

• Australian site welders and contractors requiring professional AC/DC TIG performance from a generator or single-phase supply
• Maintenance and repair professionals working in the field, on-site, or in confined spaces where VRD compliance is mandatory
• Automotive, motorsport, and panel fabricators needing precise aluminium and stainless TIG welding from a lightweight, portable machine
• Workshops without 3-phase power that require high-quality AC/DC TIG capability from a standard 240 V outlet
• Remote and resource sector operations where generator compatibility and multi-voltage flexibility are essential
• Food, beverage, and pharmaceutical fabricators benefiting from MAX WeldClean for fast stainless weld finishing
• Quality-certified workshops using WPS-controlled procedures and digital welding records via WeldEye

Kemppi Master T 245 ACDC GM AU — Technical Specifications

Frequently Asked Questions — Kemppi Master T 245 ACDC GM AU

What does GM AU mean on the Kemppi Master T 245 ACDC? GM stands for Generator-compatible and Multi-voltage — the machine runs on standard 240 V mains or from a generator, and also accepts a 110 V low-range input. AU denotes the Australian market version, which includes an Australian mains plug and has the VRD (Voltage Reduction Device) permanently locked on to meet Australian safety standards.

Can the Kemppi Master T 245 ACDC GM AU weld aluminium? Yes. The AC TIG mode makes the Master T 245 ACDC GM AU fully capable of welding aluminium and aluminium alloys. The Optima AC waveform gives welders additional control over the arc character — allowing selection between sine, square, or Optima AC depending on the alloy and application.

What is VRD and why is it locked on in the AU model? VRD stands for Voltage Reduction Device. When active, it reduces the no-load MMA voltage from 50 V to 23 V, significantly reducing the risk of electric shock when the arc is not struck. The AU model has VRD permanently engaged to comply with Australian workplace health and safety regulations — particularly important for welding in confined spaces or on construction sites.

What is the minimum generator size for the Master T 245 ACDC GM AU? Kemppi recommends a minimum generator output of 8 kVA to reliably power the Master T 245 ACDC GM AU at full welding capacity on 240 V input.

What is the duty cycle of the Kemppi Master T 245 ACDC GM AU? At maximum rated output of 240 A (on 240 V supply), the machine operates at a 40% duty cycle. At 200 A it delivers 60% duty cycle, and at 170 A it can run continuously at 100% duty cycle — making it well-suited to sustained production TIG welding sessions.

What is MAX WeldClean on the Master T 245 ACDC GM AU? MAX WeldClean is a built-in electrolytic cleaning mode that removes oxidation and discolouration from stainless steel welds, making them surface-finished without additional post-processing equipment. It saves time and cost on finishing work in stainless steel, food-grade, and architectural fabrication.

What is the difference between the Master T 245 ACDC GM AU and the Master T 355 ACDC? The 245 ACDC GM AU is a single-phase 240 V model designed for portability, site use, and generator operation — ideal where 3-phase power is not available. It delivers up to 240 A TIG output and weighs 19.1 kg. The 355 ACDC requires a 3-phase 400 V supply, delivers up to 350 A, and weighs 21 kg — better suited to fixed workshop environments with higher-output demands.

What control panel options are available for the Master T 245 ACDC GM AU? The power source is sold separately from the control panel. Options include traditional touch-button panels or the full-colour 7" TFT panel, which offers Weld Assist, 99 memory channels per welding process, and full waveform customisation. The 7" TFT panel is protected by a 3 mm armour shield plate.

Does the Master T 245 ACDC GM AU support MMA (stick) welding? Yes. In addition to AC and DC TIG, the machine supports MMA welding up to 180 A, accepting stick electrodes from 1.6 mm to 5 mm in diameter.

Is the Master T 245 ACDC GM AU compatible with WeldEye? Yes. The machine is compatible with Kemppi's WeldEye cloud-based welding quality management service, enabling digital welding data recording, WPS management, and traceability reporting for quality-controlled applications.