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MI 3252 Micro-Ohmmeter 100A

Metrel MI 3252 Micro-Ohmmeter 100A is the portable solution for site-to-site accurate low resistant measurement & analysis. The unit can be powered from mains supply & internal battery (enables measurements with 100 A for up to 10 minutes when powered from internal battery only).

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Metrel MI3252 Portable Low Resistance Ohmmeter

The Metrel MI 3252 comes complete with rugged carry case and weighs in at less than 12 kg.

Regardless of its powerful internal generator, the MI 3252 is battery-powered, making it particularly suited to locations with multiple testing points. The high test current enables great repeatability of results, very high resolution and accuracy necessary for measurements of circuit breakers, switches in high-power installations, bus bars, cable splices, welding joints and other very low resistance, high power devices. Results are additionally visualised with a bar graph. The memory can hold up to 1000 results, enough for even the most complex measuring locations. These can then be transferred to your PC using the included HVLink PRO software.


Metrel MI3252 Measurement Functions:

  • Low contact resistances of circuit breakers, switches and busbar joints
  • Resistance measurement with adjustable test current (100 mA … 100 A)
  • Voltage drop measurement
  • Eliminates of test leads resistance - Uses 4-lead Kelvin testing method to ensure high accuracy results (0.25%)

▶ Video: A Look Round the MI 3252 Micro-Ohmmeter:

Thumbnail for the Metrel MI 3252 Micro-Ohmmeter video

Metrel MI3252 Key Features:

  • 1 nΩ best resolution with 0.25% accuracy
  • On screen resistance bar graph
  • Safe: sustain external voltages in case of wrong connection, protection level (CAT IV / 50 V); automatically detects continuity in current circuit
  • Single and continuous measuring modes
  • Custom limits can be set for PASS or FAIL evaluation of test result
  • High protection degree: IP 64
  • Built-in memory enables storage of up to 1000 test results
  • The instrument can be powered from both mains supply and internal battery
  • HVLink PRO software supplied as a standard accessory enables downloading, analysis and export of test results and printing of test reports


Metrel MI3252 Applications:

  • Electrical Power Systems
    • Power Plants
    • Distribution
    • Connections / Bondings
  • Industrial Systems
    • Switchboards / Control gears
  • Special Installations / Locations
    • Railway Systems


What comes with the Metrel MI3252?

  • Metrel MI 3252 Low Resistance Ohmmeter
  • 2 x Current Test Leads with Croc Clips, 5m, 25mm²
  • 2 x Potential Test Leads, 5m (Red/Black)
  • 2 x Test Probes (Red/Black)
  • 2 x Crocodile Clips (Red/Black)
  • Mains Cable
  • RS232 Cable
  • USB Cable
  • Bag for Accessories
  • PC SW HVLink Pro Software
  • Instruction Manual
  • Calibration Certificate


Comparison Chart for: Metrel MI 3252 Micro-Ohmmeter 100A

MI 3252MI 3250MI 3242
MicroOhm 100AMicroOhm 10AMicroOhm 2A
Measuring range1 nΩ ... 20 Ω100 nΩ ... 2 kΩ1 µΩ ... 200 Ω
No. of ranges676
Current into load2 mΩ at 100 A200 mΩ at 10 A1 Ω at 2 A
Highest resolution1 nΩ0.1 µΩ1 µΩ
Basic accuracy0.25 %0.25 %0.25 %
Test current100 A, 50 A, 10 A, 1 A, 100 mA10 A, 1 A, 100 mA, 10 mA, 1 mA2 A, 100 mA, 10 mA
Other Features
Measurement modesSingle, ContinuousSingle, Automatic, Inductive, ContinuousSingle, Automatic, Inductive, Continuous
Test method4-wire, unidirectional4-wire, Bidirectional4-wire, Bidirectional
Auto ranging
PASS / FAIL indication
Temperature compensation
Ports memory
USB Memory
Number of memory locations1000 / 2 levels10001500
SoftwareHVLink PROHVLink PROHVLink PRO
General data
Display typeGraphical LCDGraphical LCDGraphical LCD
Safety categoryCAT IV / 50 V CAT II / 300 VCAT IV / 300 V CAT II / 300 VCAT IV / 300 V CAT III / 600 V
Rechargeable batteries
Battery12 V / 12 Ah6 x NiMH, type HR146 x NiMH, type AA
Built-in battery charger
Low battery indication
Mains voltage115 / 230 V AC, 50 / 60 Hz, 200 VA90-260 V AC, 45-65 Hz, 50 W
Weight11.8 kg2.8 kg0.8 kg
Dimensions (mm)410 x 175 x 370310 x 130 x 250140 x 80 x 230
Product Downloads


Accessory Code Description Price (Ex VAT)
A1006 Soft Carrying Bag £51.94 ADD
A1013 Crocodile Clip Black £7.95 ADD
A1056 PC SW TeraLink with RS232 cable £147.34 ADD
A1064 Crocodile Clip Red £7.95 ADD
A1271 Soft carrying bag with shoulder strap £60.42 ADD