Martindale CM69 AC TRMS Earth Leakage Clamp Meter

Martindale Electric


Martindale approved distributor and service centre.

The Martindale CM69 TRMS AC Leakage Clamp Meter is ideal for troubleshooting leakage currents where other clamps can’t.

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Usually Stock or Short Lead Time

£ 271.15 rrp £ 319.00

save 15%

(£ 325.38 inc VAT.)

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The Martindale CM69 is a 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 CM69 is ideal for troubleshooting leakage currents including tracking down the causes of nuisance RCD tripping.

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.


True RMS measurement.
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.
Low pass filter and peak hold.
Shielded jaw for high repeatability.
Auto power off & low battery indicator.
Display backlight.

Martindale CM69 Specifications:

  • AC mA: 6.000mA / 60.00mA /600.0mA autoranging, Accuracy: 1% ± 3dgt.
  • AC A: 6.000A / 60.00A, Accuracy: ± 1% ± 3dgt.
  • AC V: 60.00V / 300.0V, Accuracy: ±1% ± 3dgt.
  • DC V: 60.00V / 300.0V, Accuracy: ±1% ± 2dgt.
  • Ohms: 600.0Ω to 600.0kΩ, Accuracy: ±1% ± 2dgt.
  • Continuity: buzzer ≤ 60Ω.
  • Max conductor: 20mm Ø.
  • Operating environment: 0°C to 40°C, <80% RH.
  • Jaw opening capability: 23mm.
  • Display: Liquid crystal display with maximum reading 6000.
  • Power: 2 x 1.5V, AAA alkaline batteries.
  • Auto power off: after 30 minutes.
  • Dimensions: 206 x 76 x 33.5mm.
  • Weight: 262g approx. (including batteries).
  • Martindale CM69 Warranty: 2 years.

Includes: Martindale CM69, carrying case, Set of TL16 test leads, 2 x 1.5V AAA batteries, Instructions.

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Martindale CM69 AC TRMS Earth Leakage Clamp Meter