• Insulation ressitafbnce up to 200GΩ
  • Insulation test voltages up to 1000V
  • 600V AC/DC voltage
  • Leakage current: 2000µA
  • Polarization index (PI) and dielectric absorption ratio measurements (DAR)
  • Low resistance measurement with Zero function
  • Programmable timer
  • Comparison mode

What's in the Box

  • Remote probe
  • Test leads
  • Alligator clip
  • 6 x AA batteries
  • Soft case


The Extech MG325 Insulation Tester / True RMS MultiMeter combines a 200GΩ/1000V high range Insulation Tester with a full-featured True RMS MultiMeter in a single, compact instrument. CAT IV safety rating ensures the highest level of protection. The MG325 features Polarization Index (PI) and Dielectric Absorption Ratio measurements (DAR). The comparison mode allows the user to set the pass/fail values for insulation measurements.