All in 1: Multimeter, Insulation and Earth Continuity Tester


The Ultimate Combination of a Multimeter, Insulation and Earth Continuity Tester

The TBM878 Multimeter 3 in 1, is a True RMS digital multimeter with the added functionality of an insulation tester and earth continuity tester combined into a single, compact, handheld unit. This multipurpose CATIV 600V unit provides maximum versatility for compliance testing, troubleshooting and preventative maintenance.


The TBM878 has the ability to determine the state of insulation material and earth continuity. Furthermore it has a convenient remote probe that inhibits testing on live circuits and hands free lock feature for continuous testing.

Additional features include:

  • Beep-Jack™ – beeps against improper terminal plug in (decreases risk of damage)
  • VFD V & Hz –  measures fundamental voltage and frequency of most variable frequency drives
  • Smooth mode – smooth out unstable insulation resistance reading
  • X-Speed Capacitance – measures up to 30mF only in few seconds, 1kV protection
  • LCD Display (Counts): 6000
  • Analogue bar graph
  • REC – recording MAX, MIN, MAX-MIN & AVG
  • Splash and dust proof
  • Certification: UL, IEC610010-1, Certificate of Conformance
  • Temperature: -50°C to 1000°C

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Update: 05/07/2020 © HellermannTyton 2020