RS PRO ICM139R AC/DC Clamp Meter, Max Current 1kA ac, 1kA dc CAT III 1000 V, CAT IV 600 V

  • RS Stock No. 123-3227
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): TW
Product Details

RS PRO ICM139R True RMS Clampmeter

From the trusted RS PRO brand, this ICM139R clamp meter offers high specification performance in a rugged, low-cost unit. It has true RMS reading on AC mode to ensure accurate current measurement. It utilises Hall Effect technology and features nickel steel alloy jaws for precise measurement of ac and dc current up to 1000 A.

Battery-powered for maximum portability, and with a large backlit screen, this multifunction current clamp meter is ideal for on-the-go applications in almost any environment.

It is also supplied in a carry case to keep the clampmeter safe and secure during transit.

Features and Benefits

• 4000 Count digital display
• Backlit, large-scale display
• Analogue bargraph 43 segments
• True RMS reading on AC mode
• AC 1000 A capability
• AC 750 V capability
• DC 1000 V capability
• 400 Ω resistance capability
• Continuity bleeper
• Display hold
• Peak hold (10 Ms)
• Min/Max function
• Auto power off
• Complies with CAT IV 600 V / CAT III 1000 V


This current clamp meter is designed for current measurement in electrical testing, and combines a digital multimeter with a clamping current sensor. The nature of the clamp means that it can fit around a wire at any point to sense AC Current. This has the advantage of allowing electricians to take a reading from a wire without touching it, which is both more convenient and safer than other methods.

True RMS (Root Mean Square) reading has advantages over average RMS reading in that it compensates for interfering electronic loads or distorted sinewaves to give an accurate reading.

This current clamp is used for measuring high levels of current in service and maintenance applications. It can also be used when installing electrical equipment.


RS PRO aims to be your go-to brand when you need reliability, quality, and affordability. We source high-quality tools and parts from trusted sources and employ expert testing to build a brand you can rely on.

When it comes to test and measurement equipment, RS PRO has an extensive range of solutions. From electrical to environmental measurement, we offer calibrated and multi-function instruments to suit your needs.


Battery (installed), test leads, carrying case and user manual

Attribute Value
Absolute Maximum AC Current Measurement 1kA ac
Absolute Maximum DC Current Measurement 1kA dc
Absolute Maximum AC Voltage Measurement 750V ac
Absolute Maximum DC Voltage Measurement 1000V dc
Absolute Maximum Resistance Measurement 400Ω
Model Number ICM139R
AC Current Measurement Resolution 100mA
DC Current Measurement Resolution 100mA
Best DC Current Accuracy ±(1% rdg + 3dgts)
Clamp Meter Type AC/DC Clamp Meter
Best AC Current Accuracy ±(1.5% rdg + 5dgts)
Best AC Voltage Accuracy ±(1% rdg + 5dgts)
Best DC Voltage Accuracy ±(0.7% rdg + 2dgts)
Battery Life 300 h
Jaw Capacity Busbars 51mm
Weight 420g
Dimensions 90 x 51 x 275mm
DC Voltage Measurement Resolution 100mV
Power Source Battery
Width 51mm
Length 90mm
Safety Category Level CAT III, CAT IV
Resistance Measurement Resolution 100mΩ
Maximum Conductor Size 51 (Dia.)mm
True RMS Yes
Functions Measured AC Current, AC Voltage, Continuity, DC Current, DC Voltage, Diode Test, Frequency, Resistance
Display Type LCD
Maximum Operating Temperature +50°C
AC Voltage Measurement Resolution 100mV
Minimum Operating Temperature 0°C
Height 275mm
Best Resistance Measurement Accuracy ±1% + 3 Digits
Safety Category Voltage 600 V, 1000 V
Safety Category CAT III 1000 V, CAT IV 600 V
Battery Type IEC 6F22, NEDA 1604, 9V
54 In stock for delivery within 7 working day(s)
Price (ex. GST) Each
$ 440.37
(exc. GST)
$ 506.43
(inc. GST)
Per unit
1 +
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