Web only

Find similar products here

Martindale CM51 Digital Clamp Meter

Price match guranteePrice match guarantee

We can price match this item if found elsewhere. Call us on:

0333 400 9500

Quoting product code: A06WR


Our delivery options

Free standard delivery (orders over £10)
3-5 working days 9am-5pm
Standard delivery (orders under £10)
3-5 working days 9am-5pm
Next day delivery
Mon - Fri, order by 6pm
From £5.99
Specific day/time delivery
Choose am / pm OR before 9am / 10.30am
From £5.99

Specific options for this product are available in the checkout. Read more delivery information

About this product


  • Check AC current in your cables
  • Measure AC current up to 300A
  • Digital LCD display

Product overview

• Check AC current in your cables
• Measure AC current up to 300A
• Digital LCD display
• Keep a value displayed with a data hold button
• Compatible with cables up to 27mm in diameter
• Powered from a CR2032 battery

What can this clamp meter do?
Check the AC current in your cables without having to mess about dismantling your system. The clamp meter can measure the AC current in cables up to 27mm in diameter without you needing to disconnect the cables. Measure up to 300A with a sample rate of two and a half times per second. It’s easy to read the value on the digital LCD display, and you can keep a value from a specific time by pressing the data hold button. The clamp meter is safety rated to EN 61010-1, EN 61010-2-032 Overvoltage Cat. III 300V, Class II.

How is the clamp meter powered?
Power the clamp meter with a single 3V CR2032. The ‘auto power off’ feature switches the clamp meter off after 12 minutes without input, which lengthens your battery life. The clamp meter comes with a built-in battery indicator to let you know when to change the battery. For added safety, the clamp meter has a finger guard to protect you.




Digital Clampmeter

Power Specifications

Battery Type:

1 x 3V CR2032 battery

Operating Specifications

AC Current:

40.00 / 300.0, 40Hz to 500Hz AmA

Data Hold:




Dimensions & Weight