MI-3125 Electrical Tester, , Earth Resistance Measurement

  • RS Stock No. 712-6023
  • Mfr. Part No. MI-3125
  • Manufacturer Metrel
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): SI
Product Details

Instaltest Combo MI-3125

The 3-in-1 multi-function tester, installation tester and pass/fail tester

Replaces multimeter, insulation tester, RCD tester, loop impedance tester and phase sequence tester
Installation verification tests to AS/NZS3017 covering earth continuity, insulation resistance, polarity, correct connections, fault loop impedance and RCD tests
Tests sockets in seconds with single push button and without trailing leads
Preset and user defined Pass/Fail limits with on-screen tick/cross plus red/green LED indicators

Supplied with

Test leads, test probes, alligator clips and resistor box

Metrel Multifunctional testers

The Metrel multifunctional tester is an appropriate device for the safety testing and installation on TT and TN system. The results, indications, measurement parameters and messages are clear, visible and easy to read due to the large graphic display with backlight. It contains integrated characteristics of fuses and RCDs for the automatic evaluation of results. The handling of the instrument is designed to be as simple and clear as possible. Each test has its individual help screen describing how to connect the instrument into the installation and how to perform measurements. This tester performs continuity, insulation, RCD, loop, line, voltage, frequency and phase sequence tests. It has a built-in charging circuit and comes complete with a set of rechargeable NiMH batteries.
Supplied With: Instrument EurotestCOMBO, test lead, 3 x 1.5m, Schuko-plug test cable, power supply adapter + 6 NiMH rechargeable batteries, Type AA, test probe, 3 pcs (blue, black, green), crocodile clip, 3 pcs (blue, black, green), set of carrying straps, short instruction manual, instruction manual on CD, handbook on CD and calibration certificate.

Features and Benefits

• Automated RCD testing procedure significantly reduces the test time
• Automatic polarity reversal on continuity test
• Built-in loop impedance tables allow automatic evaluation of the line / loop impedance results compared to the regulations
• Monitors all three voltages in real time
• Multi-system testing to test on single and multiphase TT and TN systems
• Two LED indicators for pass/fail evaluation of test results are placed on both sides of the LCD
• Upgrades can be made to the firmware to keep the unit up to date
• Wide range of insulation test voltages from 50V to 1000V, reading up to 1000mΩ
• Zs (RCD) function performs a loop impedance test without tripping the RCD


• Initial and periodic testing of domestic and industrial installations
• Testing of single and multiphase systems


• AS/NZ 3760
• BS 7671
• EN 60364-4-41
• EN 61008
• EN 61009
• EN 61010-031
• EN 61010-1
• EN 61326
• IEC/EN 61557

Combination Testers

Attribute Value
Loop Impedance Test Type 3 Wire
Automatic RCD Test Yes
Non-Tripping Yes
Maximum Voltage Measurement 550V ac
Test Type Continuity
Earth Resistance Measurement Yes
Model Number p MI-3125
Weight 1kg
Maximum Continuity Resistance 1999Ω
Display Type LCD
Dimensions 230 x 140 x 80mm
Length 230mm
Width 140mm
Power Source Battery
Minimum Continuity Resistance 0.01Ω
IP Rating IP40
Height 80mm
6 In stock for delivery within 4 working days
Price Each
SGD 1,488.73
(exc. GST)
SGD 1,592.94
(inc. GST)
Per unit
1 +
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