The Martindale CM51 300A AC Mini Clamp Meter is designed for electricians and electrical maintenance technicians who need a compact and reliable solution for measuring AC current in residential and commercial installations. Its pocket-sized design and 27 mm clamp jaw make it easy to carry and ideal for quick fault finding without disconnecting conductors.
Fast and Accurate Everyday Testing
Measuring AC current up to 300 A with a resolution down to 10 mA, the CM51 delivers accurate current measurements for routine electrical maintenance. The large LCD display features a Data Hold function for capturing readings in awkward locations, while Auto Power Off helps extend battery life during daily use.
Built for Routine Electrical Work
With a CAT III 300 V safety rating and lightweight design, the CM51 is built for everyday electrical testing. How does the CM51 simplify current measurements? Its compact clamp design allows electricians to take safe, non-contact AC current readings quickly, making it an ideal addition to any toolkit.
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 all orders
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.
