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Learn more by watching our Major Tech MT25-COMBO-1 | MT723 Clamp Meter + MT500 Insulation Meter + MT310 ECLB Tester video.
Additional related video.
Additional related video.
The MT723 Clamp Meter provides True RMS readings for AC/DC current up to 400A and voltage up to 1000V. It also measures frequency, resistance, capacitance, and temperature from -20°C to 1000°C. Features include inrush current mode, VFD support, NCV detection, a built-in flashlight, and a 30mm clamp opening—ideal for diverse electrical testing.
The MT500 Insulation Tester offers 250V, 500V, and 1000V insulation testing with 1mA output current. It includes continuity and resistance ranges, a live circuit warning, LED-backlit scale, and a lock-down test button for easy and safe operation.
The MT310 ELCB Tester checks socket wiring and simulates earth leakage faults with selectable trip currents (10–35mA). Neon indicators show wiring status, and an integrated AC voltage display offers added test feedback.
Q: Can the MT723 measure inrush current and VFD voltage?
A: Yes, it supports both functions for advanced testing.
Q: Is the MT500 safe for live circuits?
A: Yes, it provides a live circuit warning and voltage display.
Q: How does the MT310 test ELCBs?
A: Plug it into a socket, set the trip current, and press the button to simulate a fault.
(MT25-COMBO-1)
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.
| MT390 Function | Range | Resolution | Accuracy |
|---|---|---|---|
| Continuity | 4-400.0Ω | 0.001Ω | ±(1.5% + 30 Digits) |
| Insulation Resistance | 125/250/500/1000V | 0.125 – 4000MΩ | ±(2% + 10 Digits) |
| Loop Range | 0 – 999Ω | 0.01Ω | ±(4% + 6 Digits) |
| PSC/PFC | 0.23A – 23000A | Derived from Loop and Voltage measurement | |
| RCD | x 5, x 1, x 1/2, auto ramp mA | 15/30/50/100/200/500/650/1000mA | |
| Measuring Range | 2000ms | ±(1% + 3) | |
| Voltage Measurement | 80V – 500V | 1V | ±(2% + 2 Digits) |
| Frequency Response | 45-65Hz | 1Hz | ±(2Hz) |
| Earth Resistance | 99.99/2000Ω | 0.01Ω | ±(2% + 30 Digits) |
| Short Circuit Current | >200mA | ||
| Rated Current | 1mA | ||
| Loop Impedance | L-PE, L-PE(ATT), L-N, L-L | ||
| Test Current | 8.0A – 25.0A | ||
| Phase Angle | 0° to 180° | ||
| PC Interface | USB/Bluetooth | ||
| Display | 3.5″TFT Display | ||
| Memory | SD Card | ||
| Back Light | Yes | ||
| Enclosure | Over Moulded case | ||
| Low Battery Indication | Yes | ||
| Batteries | 8 x AA | ||
| Weight | 631g | ||
| Dimensions | 220 x 94.6 x 60.5mm | ||
| Safety Specs | IEC61010-1 CAT IV 400V | ||
| MT766 Function | Range | Resolution | Accuracy |
| DC Current | 60.00A – 600.0A | 10mA | ± (2.8% + 8 Digits) |
| AC Current | 60.00A – 600.0A | 10mA | ± (1.5% + 10 Digits) |
| DC Voltage | 600.0mV – 1000V | 1mV | ± (1.2% + 5 Digits) |
| AC Voltage | 6.000V – 1000V | 1mV | ± (1.5% + 5 Digits) |
| Resistance | 600.0Ω – 60.00MΩ | 0.1Ω | ± (1.5% + 6 Digits) |
| Frequency | 5Hz – 9.999kHz | 1mHz | ± (1.5% + 6 Digits) |
| Capacitance | 999.9nF – 99.99mF | 0.1nF | ± (4% + 6 Digits) |
| Temperature K-Type | -20 to 1000°C | 0.1°C | ± (3°C + 3 Digits) |
| IR Temperature D:S 4:1 | -30.0 to 350.0°C | 0.1°C | ± (2°C + 2 Digits) |
| Duty Cycle | 20.0% to 80.0% | 0,1% | ± (1.2% + 5 Digits) |
| True RMS Measurements | ACV, ACA | ||
| AC Bandwidth | 50 – 1000Hz | ||
| Digital Display | 6000 | ||
| Bargraph | Yes | ||
| Non-Contact Voltage (NCV) | Yes | ||
| Overrange indication | Yes | ||
| Continuity | Yes | ||
| Diode test | Yes | ||
| Jaw size | 33mm | ||
| Input impedance | >10MΩ DCV & >10MΩ VAC | ||
| Min Max | Yes | ||
| Data Hold | Yes | ||
| Back Light | Yes | ||
| Enclosure | Double injection moulding | ||
| Low battery indication | Yes | ||
| Power source | 3 x LR03 | ||
| Weight | 350g | ||
| Dimensions | 239 x 66 x 44mm | ||
| Safety Specs | IEC61010-1 CatIV 600V |
These specifications and characteristics outline physical, mechanical, electrical details.
| Brand | Major Tech |
| SKU | MT25-COMBO-1 |
| TYPE | VALUE |
|---|---|
| Brand | Major Tech |
| Combo | MT723 + MT500 + MT310 |
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