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    Learn more by watching our Major Tech MT390 | Multifunction Installation Tester | Bluetooth 4.0 video.

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    Description

    Major Tech MT390 | Multifunction Installation Tester | Bluetooth 4.0

    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.

    MT390 Features

    • 8-in-1 functionality: Insulation, earth resistance, loop impedance, PSC/PFC, RCD, phase rotation, voltage, and low-ohm continuity.
    • 3.5” colour TFT display: Bright, full-colour screen with clear multi-value layouts.
    • Wireless & USB transfer: Bluetooth, Mini USB, and MicroSD for exporting results.
    • Live on-screen help: Connection diagrams shown during setup for fast reference.
    • Site-ready build: Durable rubber housing with safety shield and hard carry case.
    • Compliant & safe: Meets IEC 61010 CAT IV 400V safety standards.

    FAQ

    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

    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.

    How to Lodge a Warranty Claim

    To initiate a warranty claim:

    1. Return to Sparky Direct
      Ship the meter back to Sparky Direct along with:

      • A copy of your proof of purchase
      • A brief description of the issue
      • Your contact details

      Please ensure the unit is securely packaged to prevent damage in transit.

    2. Forwarded for Assessment
      Upon receiving your meter, we will forward it to Major Tech’s authorised service centre for inspection, testing, and calibration.

    Assessment Process

    Major Tech’s service lab will assess the returned unit to determine:

    • Whether the fault is due to a manufacturer’s defect (covered under warranty), or
    • If the issue is the result of user error or no fault is found.

    Outcomes

    • If approved under warranty: The product will be repaired or replaced at no cost to you.
    • If not covered under warranty: The lab may offer repair services, which will be quoted and billed directly to you by the service provider.

    Important Notes

    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.

    Please allow up to 7-14 working days for the return of your product.

    Features
    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
    Specifications

    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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