Martindale CM69 AC TRMS Earth Leakage Clamp Meter, Max Current 60A ac CAT II 1000V


£210.00 / £252.00 incl VAT

⚡ True RMS measurement
⚡ Shielded jaw for high repeatability
⚡ Voltage Resistance & Continuity
⚡ Auto power off & low battery indicator
⚡ Display backlight

Only 2 left in stock (can be backordered)

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Martindale CM69 AC TRMS Earth Leakage Clamp Meter

Product Description:

The CM69 is a new high performance TRMS AC Leakage Clamp meter with outstanding low current capability able to resolve down to 1µA. This pocket sized clamp also measures AC/DC voltage and resistance. The advanced jaw design minimises the influence of conductor position and shields against external fields from other conductors to give more accurate and consistent results. The CM69 is capable of accurate AC current measurement from 0.1mA right up to 60A with a resolution of 0.001mA in the 6mA range.

Peak hold, a switchable low pass filter and TRMS measurement make the CM69 ideal for many applications:

  • Troubleshooting of RCD nuisance tripping
  • Periodic measurement of leakage current at 50Hz to check for insulation deterioration
  • Accurate measurement of triplen neutral currents and other distorted waveforms
  • Differential current measurement for appliance testing
  • The CM69 also features auto ranging and a high contrast backlit display.
  • Earth leakage clamps operate by clamping around both the live and neutral conductors and measuring the difference between the currents flowing, allowing the “leakage value” to be displayed. Alternatively clamping around the earth conductor will also display the earth leakage current.
  • The CM69 is supplied with Martindale TL16 test leads, soft carry case, alkaline batteries and manual. All Martindale clamp meters come with a 2 year warranty.


Current AC 6.000mA/60.00mA/600.0mA autoranging
Accuracy 1% ± 5 dgt
High current AC 6.000A/60.00A
Accuracy ± 1% ± 5 dgt
Voltage AC 60.00V/300.0V
Accuracy ± 1% ± 3 dgt
Voltage DC 60.00V/300.0V
Accuracy ± 1% ± 2 dgt
Ohms 600.0Ω to 600.0kΩ
Accuracy ± 1% ± 2 dgt
Continuity buzzer ≤ 60Ω
Max conductor 20mm =Ø
Operating environment 0°C to 40°C, <80% RH
Features Auto power off, Low battery indication
Supply 2 x 1.5V AAA
Weight 270g approx
Dimensions 206 x 76 x 34mm
Includes TL16 leads, case, batteries and manual


CM57 CM69 CM79
AC Current
DC Current
AC/DC Volts
Non-contact Voltage Detector
Auto ranging
Max Conductor Size 25mm Ø
20mm Ø 25mm Ø
True RMS
Min Max Peak
Auto Power Off
Other Low pass filter
0.001mA resolution
Safety CAT III 600V CAT III 600V
  • Martindale CM69 AC TRMS Earth Leakage Clamp Meter
  • TL16 test leads
  • Soft carry case
  • Alkaline batteries
  • Manual
  • All Martindale clamp meters come with a 2 year warranty


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