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Home > Insulation Resistance Testers > Megger MIT485-EN Insulation Resistance & Continuity Tester (Premium/Telecom)
Megger MIT485-EN Insulation Resistance & Continuity Tester (Premium/Telecom)
Megger Insulation Resistance & Continuity Tester (Premium/Telecom)
 Description:Insulation Resistance & Continuity Tester (Premium/Telecom)
 Category:Insulation Resistance Testers
 Part Number:MIT485-EN
 Byram P/N:1A4465
 UPC Code:N/A
 Weight:5.00 lbs
 Availability:Call for Availability


CAT IV Insulation Resistance & Continuity Tester 50/100/250/500/1000V + 600 V catIV + Result Storage + Download

The Megger MIT400 Series insulation and continuity testers has been designed for electrical testing by power utilities, industrials, telecommunication companies, commercial/domestic electricians and anyone with unique test voltage requirements. The wide range of features also makes the MIT400 Series ideal for maintenance technicians and engineers.

Telecommunication Testing:
Designed to cope with the additional requirements of the telecommunications industry, MIT Models 480, 481 and 485 include 50 V and 100 V range insulation testing as standard, plus higher voltages as required.

In addition, the voltage detection test inhibit feature has been raised to 75 V (from 50 V), to allow testing of cables with coactivity coupled induced voltages, which would normally inhibit such testing with a 50 V protected instrument.

Finally the MIT481 and MIT485 models include measurement of cable distance by capacitance, providing a convenient cable length without the need to use TDR technology, with adjustable cable capacitance from 40 nF/Km to 60 nF/Km (default is 50 nF/Km).


  • Test result storage
  • Measurement of capacitance and distance by capacitance
  • Bluetooth® wireless data transfer
  • CAT IV 600 V rating – provides greater safety when testing at higher voltage levels
  • Adjustable insulation test voltages – provides 250 V to 1000 V or 50 V to 1000 V.
  • Dual digital display readout – allows display of complimentary test information simultaneously (for example: MO plus test voltage or MO plus leakage current)
  • Digital and analog arc display – includes not only the digital readout but also Megger’s patented analog arc to replicate the response of a moving coil display
  • Exceptional measurement range from 20 GO to 200 GO - highest insulation test range available on the market, providing a superior range of measurement applications.
  • Choice of 20 mA or 200 mA continuity testing – allows user to select lower continuity range thus increasing battery life considerably
  • Continuity auto-test capability – enables real two-handed operation without the need to press the test button
  • Adjustable continuity limit alarm – allows pass/fail limits to be sent to speed testing
  • Automatically perform PI and DAR tests – user is able to quickly perform two important diagnostic tests. . . Polarization Index (PI) and Dielectric Absorption Ratio (DAR)
  • True RMS voltage measurement – allows accurate voltage measurement on noisy lines
  • Auto ranging voltage measurement – automatically adjusts range from millivolts to 600 V AC or DC, eliminating the need to keep changing ranging
  • Live circuit warning – automatically warns of contact to a live circuit, voltage is displayed and testing is inhibited
  • Auto fuse warning – warns of fuse failure automatically. No need to test the fuse manually.
  • Buzzer select button – enable or disable buzzer as required with resistance also displayed on the screen

These models include all the features required for electricians, technicians and engineers working in a range of industries. Available features are selected to make testing easy and fast in a range of situations. Typical applications include:

  • Building/Campus electrical maintenance
  • Large and small scale electrical installations
  • Periodic electrical systems inspection and testing
  • Cable testing
  • Plant maintenance and production testing
  • Panelboard testing
  • Railway and other transportation maintenance and testing
  • Motor testing
  • Cable inspection/quality control
  • Street lighting maintenance
  • Avionics ground testing and maintenance
  • Military hardware and facility maintenance


  • Set of silicone test leads
  • Rugged instrument rubber boot with built-in stand
  • Plug-in switch probe
  • High-impact polypropylene carry case
  • Free calibration certificate
  • Owner information CD
  • Three year product warranty

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