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Learn more by watching our Major Tech MT325 | Socket RCD Tester video.
Additional related video.
The Major Tech MT325 is a socket RCD tester that plugs into a standard 230V AC outlet to check the trip time and trip current of a residual current device. The MT325 reads disconnection time directly on its LCD to a resolution of 1ms, across six pre-set test currents from 5mA to 500mA. It carries an IEC 61010-1 CAT III 600V safety rating and confirms socket wiring status through two indicator lamps.
Testing an RCD on the tools usually means proving that a safety switch actually disconnects within the time the wiring rules demand. A tester that is bulky or slow to set up costs time on every board and every callback. The MT325 is compact and lightweight at pocket size, and its pre-programmed test currents remove the fiddly manual dialling that slows a verification run. Wiring faults show up straight away through the correct-wiring indicator lamps before any trip test begins.
For a working sparky, the MT325 turns RCD verification into a plug-and-read step rather than a setup job. The 0 and 180 degree phase angle selection covers both half-cycles without repeating the test. The 1ms trip-time resolution gives a figure precise enough to log for compliance records or handover paperwork. The Data Hold function freezes the trip time on the LCD, so the reading survives after the RCD cuts power to the socket.
The MT325 is built for single-phase 230V AC socket circuits and is not suitable for three-phase or high-voltage industrial earth-leakage testing. It tests RCD trip time and trip current only, so it does not measure insulation resistance, loop impedance, or continuity. Use it within its 230V plus or minus 10 percent operating range.
Verified Sparky Direct customer reviews: Major Tech MT325 Socket RCD Tester (MT325)
"Compact and ideal" — Steve
(MT325)
The MT325 is rated to IEC 61010-1 measurement category CAT III 600V. This covers testing on fixed installations such as switchboards and socket outlets fed from the distribution board. It confirms RCD trip time and trip current on single-phase 230V AC circuits.
The MT325 needs no installation and plugs straight into a 230V socket outlet to run a test. Testing and verifying RCDs on an installation is electrical work, so it should be carried out by a licensed electrician or a competent person under the relevant testing rules.
The tester runs six pre-set test currents: 5, 10, 30, 100, 300, and 500 mA. It also has a 250mA fast-trip setting and a no-trip setting at 50 percent of the selected range. Trip current is held within plus or minus 3.0 percent.
The phase angle switch runs the trip test on both the positive and negative half-cycles of the AC waveform. This captures the worst-case trip point in a single pass and removes the need to repeat the test. The MT325 reads the disconnection time to a resolution of 1ms.
The MT325 carries a 2-year warranty for both domestic and commercial use, starting from the invoice date. Warranty claims are handled by return to Sparky Direct, which forwards the unit to Major Tech's authorised service centre for assessment and, where approved, repair or replacement.
No. The socket RCD tester is built for single-phase 230V AC circuits within plus or minus 10 percent. It does not test three-phase supplies, higher-voltage industrial earth-leakage systems, insulation resistance, or continuity. Keep it to 230V socket-fed RCD testing.
The Major Tech MT325 is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.
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All products come with a manufacturer’s or supplier’s warranty
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If your order arrives damaged or is faulty, let us know within 24 hours.
Contact us via our chat to arrange the return.
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How to Request a Return
Warranty starts from Invoice Date
Domestic Use: 2 Year
Commercial Use: 2 Year
Warranty Method: Return to Sparky Direct
All Major Tech Meters sold through Sparky Direct are covered by the manufacturer’s warranty. If you believe your meter is faulty or defective, you may request an assessment under this warranty policy.
To initiate a warranty claim:
Return to Sparky Direct
Ship the meter back to Sparky Direct along with:
Please ensure the unit is securely packaged to prevent damage in transit.
Forwarded for Assessment
Upon receiving your meter, we will forward it to Major Tech’s authorised service centre for inspection, testing, and calibration.
Major Tech’s service lab will assess the returned unit to determine:
As Major Tech’s service labs are independent providers, Sparky Direct cannot govern or guarantee turnaround times or any costs incurred for repairs outside of warranty coverage.
| Function | Range | Accuracy |
| Voltage Measurement | 220VAC to 240VAC | ± (3%) |
| Frequency Response | 50/60Hz | |
| Test Current | 5, 10, 30,100,300,500mA | |
| Measuring Range | 2000ms | ± (5%) |
| Phase Angle Selection | 0° or 180° | |
| Socket Polarity | Yes | |
| Enclosure | Double Injection moulding | |
| Display | LCD | |
| Weight | 185g | |
| Dimensions | 128 x 68 x 30mm | |
| Safety Specs | IEC61010-1 CAT III 600V | |
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Major Tech |
| SKU | MT325 |
| Barcode # | 6008229018138 |
| Package Weight | 0.363kg |
| TYPE | VALUE |
|---|---|
| Type | Tester |
| Brand | Major Tech |
| Voltage (V) | 230 |
| Dimensions | 128 x 68 x 30mm |
| Display | LCD |
| Safety Specs | IEC61010-1 CAT III 600V |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.
Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.
Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.
For website terms and conditions https://www.sparkydirect.com.au/terms-of-use
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