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The Supco M500 Insulation Tester/Electronic Megohmmeter is an alternative to taut band me ohmmeters. It gives you accurate and fast measurements to verify the condition of the insulation. As it comes with a soft carrying case, The Supco M500 Insulation Tester/Electronic Megohmmeter can be used in applications such as testing motor winding insulation and diagnosing heat damaged and deteriorating insulation in hermetic refrigeration compressors, appliances, panel boards, relay control circuits, motors and more.


  • Measure insulation values up to 1000 me ohms at 500 VAC
  • Zone scale to indicate insulation condition
  • Handheld
  • Test Leads store in case
  • Operates on 2 C batteries (not included)


  • Brand: Supco
  • Item Dimensions: 1.80 x 9.30 x 6.00 in
  • Item Weight: 0.80 lb
  • Department: Hand Tools
  • Range:  0 to 1000 me ohms