The Martindale CM69 True RMS AC Earth Leakage Clamp Meter is designed for electricians, electrical maintenance engineers and PAT testing technicians who need to detect and measure earth leakage currents with exceptional accuracy. With a measurement resolution down to 1 μA, it is ideal for troubleshooting nuisance RCD tripping, identifying insulation deterioration and carrying out differential current measurements.
Precision Leakage Current Measurements
The CM69 measures AC leakage current from 6 mA to 60 A, alongside AC/DC voltage, resistance and continuity functions. Its advanced shielded jaw design minimises the effects of nearby conductors, providing consistent and repeatable results when testing distribution boards, electrical installations and appliances. True RMS technology, a low-pass filter and Peak Hold make it well suited to measuring distorted waveforms commonly found in modern electrical systems.
How Does the CM69 Stand Out in Everyday Use?
Unlike standard clamp meters, the CM69 is purpose-built for detecting extremely low leakage currents while still offering conventional multimeter functions. Whether you're diagnosing RCD trips, checking insulation condition or carrying out routine electrical maintenance, it delivers the accuracy and repeatability professionals rely on.
Order today to enjoy free delivery, expert support and our 90-day satisfaction guarantee. Need advice? Our team is here to assist you.
Why choose Instrotech for your electrical test equipment?
With over 40 years’ experience supporting UK electricians, technicians and engineers, Instrotech is your trusted partner for quality tools and expert service. When you purchase from us, you benefit from:
Free UK shipping on orders over £99
Access to our knowledgeable technical support team
Available calibration services to maintain safety compliance
A 90-day money-back guarantee for complete peace of mind
We’re committed to helping you work safely and efficiently with industry-leading products and ongoing support.
