Introducing the mt329: major tech’s new handheld electrical installation multifunction tester

Major Tech proudly introduces the MT329 Handheld Electrical Installation Multifunction Tester — the ultimate solution for electricians looking for versatility, accuracy, and mobility in one compact device. Designed for professional electrical installations, compliance testing, and maintenance, the MT329 packs a wide range of essential test functions into a rugged, easy-to-use handheld instrument.

The MT329 combines Insulation Resistance, Continuity, Loop Impedance, RCD, Voltage, Resistance, and Phase Sequence Testing into one tool, eliminating the need to carry multiple devices on site. With CAT IV 300V safety rating, it’s built for the demands of modern electrical environments, offering both safety and peace of mind.

One of the standout features of the MT329 is its Loop Impedance Testing. This includes a high-current test up to 18.3A and a ZL-PE RCD-safe method, ensuring RCDs rated above 30mA do not trip during testing — critical for safety and accurate loop measurements. The device also provides PFC (Prospective Fault Current) and PEFC (Prospective Earth Fault Current) readings to assist in fault diagnosis.

RCD testing is another area where the MT329 shines. It supports testing for Type-A, Type-AC, and Type-B RCDs, with trip time tests at 0.5x, 1x, 2x, and 5x nominal current. The Auto RCD Test function simplifies repetitive testing, while the RCD Trip Level Test verifies precise tripping thresholds. A built-in auto discharge feature ensures safe voltage release after insulation tests — a vital safety component for daily use.

The insulation resistance test operates at 250V, 500V, and 1000V, and can measure insulation values up to 4000M?, making it suitable for both low- and high-voltage applications. In addition to insulation and voltage measurements (AC and DC up to 500V), the MT329 features AC+DC auto-mode, Low Ohm Resistance, Data Hold, and Auto Power Off to conserve battery life.

What truly sets the MT329 apart is its Bluetooth connectivity. With built-in memory and wireless data transfer to iOS and Android devices via the Major Tech app, electricians can easily store, review, and share test results on the go. This functionality is ideal for producing compliance reports and streamlining workflow in both residential and commercial settings.

The large backlit multi-LCD display provides clear, simultaneous readings, even in low-light environments, enhancing user convenience and reducing the chance of error.

Whether you’re performing installation checks, preventative maintenance, or troubleshooting, the Major Tech MT329 is the multifunction tester that delivers. Compact, powerful, and built with the electrician in mind - this is the tester you’ve been waiting for.

Get ready to upgrade your toolkit with the MT329 – now available from Major Tech.