Megger MIT481-EN: 50 V/1000 V Telecommunication Insulation Tester

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50 V/1000 V Telecommunication Insulation Tester

Designed to cope with the additional requirements of the telecommunications industry, the MIT481 includes 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 includes 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).


  • CAT IV 600 V Rated
  • Adjustable insulation test voltages - provides 250 V to 1000 V or 50 V to 1000 V.
  • Extensive results storage capability - store test date for later recall
  • 75 V live circuit inhibit
  • Cable length by capacitance measurement (Model 481 & 485)
  • Dual digital display readout
  • Cable distance in feet or km
  • Weatherproof to IP54
  • Digital and analog arc display
  • Adjustable continuity limit alarm
  • Automatically performs PI and DAR tests
  • True RMS voltage measurement


More Information
Product Name Megger MIT481-EN: 50 V/1000 V Telecommunication Insulation Tester
UOM - Unit of Measure EACH
Manufacturer Megger