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SKU: MT332

Earth Resistance Tester

$925.00 ex. GST
$1,017.50 inc. GST

  • Earth resistance measurement
  • Earth Resistance range from 0.001Ω to 1200Ω
  • Current range from 0.01mA to 20A
  • Displays resistance and current simultaneously
  • Quick self-test function
  • Fast filtering technology minimizes strong interference
  • Data storage of 300 sets
  • Alarm when the measured value is greater that set alarm threshold
  • NOISE symbol when earth loop under test has interference current

The MT332 Earth Resistance Clamp meter is used to test earth resistance and leakage current in the loop and features a sleek black screen design. This device displays resistance current on the same screen, along with convenient functions such as data storage, data review, alarm, and automatic shutdown. With a wide measuring range and high resolution, the MT332 ensures accurate measurements. Built with a shock, dust and moisture proof structure, the MT332 is well-suited for demanding environments. Its user-friendly interface and convenient carry case make it a practical choice for various applications. The instrument is known for its stable performance and strong anti-interference ability. It is an essential tool in telecommunications, electricity, meteorology, computer rooms, oil fields, and electromechanical installation and maintenance within industrial enterprises utilizing electricity as power or energy source. Controlled by a microprocessor, the Clamp-On Earth Resistance Tester employs advanced fast filtering techniques to minimize interference, ensuring precise and reliable results. Additionally, it offers simultaneous data storage and upload functions for enhanced efficiency in testing procedures.


Function Range Resolution Accuracy
Resistance 0.010Ω-1200Ω 0.001Ω ±(1%+0.01Ω)
Current 0.00mA-20.0A 0.01mA ±(2.5%+1mA)
Ambient Temperature and Humidity 23°C ± 5°C below 75%RH
Power Supply Measurement Method DC 6V (4x AA batteries) Mutual Inductance
Resistor Resolution 0.001Ω
Current Resolution 0.01mA
Jaw Size 55mm x 32mm
Display Mode 4-digit LCD display, black screen design
LCD Size 46mm x 29mm
Meter Size 285mm x 85mm x 58mm
Measure Time 2 times/sec
Data Storage 300 groups
Data Access Yes
Overflow Display Yes
Alarm Function When the measured value exceeds the alarm setting value, an alarm prompt will be issued
Low Battery Indication Yes
Automatic Shut-Down Automatic shutdown after 5 minutes of startup
Power Consumption 50mA Max
Weight Meter: 1180g (including battery)
Working Temperature and Humidity -10°C~40°C below 80% RH
Storage Temperature and Humidity -20°C~60°C below 70% RH
Insulation Resistance Above 20MΩ (500V between circuit and case)
Pressure Resistance AC 3700V/rms (between circuit and case)
External Magnetic Field <40A/m
External Electric Field <1V/m
Safety Regulations IEC61010-1 (CAT III 300V, CAT IV 150V, pollution degree 2) IEC61010-031, IEC61557-1 (Earth resistance)

Safety Rating


  • Carrying Case
  • Loop Calibrator
  • 4 x AA Batteries
  • Instruction Manual