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Learn more by watching our Major Tech MT390 | Multifunction Installation Tester | Bluetooth 4.0 video.
Additional related video.
The MT390 is a robust, professional-grade 8-in-1 multifunction installation tester, engineered for electrical installers and commissioning professionals who need fast, accurate, and reliable test results on-site. It performs insulation resistance, RCD, loop impedance, earth resistance, PSC/PFC, voltage, continuity, and phase rotation testing — all from one compact unit.
Its bright 3.5” TFT colour display presents multiple test results clearly, while the intuitive soft key interface and on-screen wiring diagrams simplify setup and reduce user error. A sliding safety shield provides added protection during testing and charging.
Equipped with Bluetooth 4.0, Mini USB, MicroSD, and S-Video TV Out, the MT390 allows fast data sharing. Export reports in CSV format directly to iOS or Android devices, or transfer via USB. Whether testing in residential, commercial, or industrial environments, the MT390 is built to perform under pressure with a double-injection rubber housing and supplied hard carry case.
Fully compliant with IEC 61010 CAT IV 400V, this tester combines safety, connectivity, and versatility — making it a must-have for serious electrical professionals.
Q: What tests can the MT390 perform?
A: It performs insulation resistance, RCD, PSC/PFC, loop impedance, voltage, continuity, earth resistance, and phase rotation tests.
Q: Can test data be sent to a phone or PC?
A: Yes, it supports Bluetooth for iOS and Android, plus USB and MicroSD for exporting reports in CSV format.
Q: Is it safe for live testing environments?
A: Yes, it is rated to IEC 61010 CAT IV 400V and includes a protective slide shield for added safety during connection.
(MT390)
Warranty starts from Invoice Date
Domestic Use: 1 Year
Commercial Use: 1 Year
Warranty Method: Return to Sparky Direct
Function | Range / Details |
---|---|
Insulation Resistance | 125, 250, 500, 1000V; Measuring Range: 0.125 - 4000 MΩ; Short Circuit Current: 1mA |
Earth Resistance | 99.99 - 2000Ω; Resolution: 0.01Ω |
Low OHM | 400Ω; Resolution: 0.001Ω; Open Circuit Voltage: 5.8VDC; Measurement Current: 200mA |
Voltage Measurement | 80 to 500V |
Frequency | 45-65Hz |
Loop Impedance | Range: 0.23Ω - 999Ω; Resolution: 0.01Ω; Measuring Current (Hi Amp): 8A - 25A |
PSC/PFC | Range: 0 – 50kA |
RCD Test | Test Current: 10mA, 30mA, 100mA, 300mA, 500mA, 1000mA; Modes: Auto x1/2, x1, x2, x5 |
Interfaces | MiniUSB, Bluetooth, MicroSD, S-Video |
These specifications and characteristics outline physical, mechanical, electrical details.
Brand | Major Tech |
SKU | MT390 |
Barcode # | 6008229025365 |
Package Weight | 0.631kg |
Package Width | 0.220m |
Package Height | 0.061m |
Package Length | 0.095m |
TYPE | VALUE |
---|---|
Type | Multifunction Testers |
Brand | Major Tech |
Height (mm) | 61 |
Width (mm) | 95 |
Length (mm) | 220 |
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