On the left of the image large yellow text on a grey background reads "Pick the Perfect Fluke 320 Series True RMS Clamp Meter". Beneath this in smaller, white text it reads "Use our quick, easy-to-understand selection guide to find the correct Fluke 320 TRMS Clamp Meter for your needs". On the right of the image there is a close-up of the Fluke 324 Clamp Meter being held by a gloved hand with the jaw surrounding a thick black cable. The image is on a yellow background.

Fluke’s 320 Series True-RMS Clamp Meters are the troubleshooting tools of choice for many commercial and residential electricians. They’re robust, ergonomic, and provide noise-free, reliable results allowing you to diagnose problems confidently. However, it can be difficult to know which Fluke 320 model is right for you. Thankfully, we’ve partnered with Fluke to bring you a clear, comprehensive selection guide to help you choose the perfect Fluke 320 Series Clamp Meter quickly and with minimal effort.

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Quick Fluke 320 Series Clamp Meter Comparison

Table containing the specifications of the Fluke 323, 324, and 325 TRMS Clamp Meters.

Fluke 320 Series True-RMS Clamp Meter – Application Overview

As outlined in the specifications above, every Fluke 320 Series True-RMS Clamp Meter is equipped with specific features and measurement capabilities, making it suitable for distinct applications.

Fluke 323 TRMS Clamp Meter

The entry-level model in Fluke’s 320 series, the Fluke 323 True-RMS Clamp Meter, is ideal for general, grab-and-go troubleshooting.

Measurement Capability  Features 
AC current up to 400A Slim
AC/DC voltage up to 600V Ergonomic 
True-RMS AC voltage and current for accurate measurements of non-linear signals  CAT IV 300V/CAT III 600V safety rating 
Resistance measurement up to 4000Ω with continuity detection  Hold button
  Soft carrying case
White gloved hand holding a Fluke 323 TRM Clamp Meter

Fluke 324 TRMS Clamp Meter

The Fluke 324 True-RMS Clamp Meter is the middle model in Fluke’s 320 Series. It is ideal for general electrical measurements and, to this end, features all the capabilities of the Fluke 323 as well as additional temperature and capacitance functions.

Measurement Capability  Features 
AC current up to 400A Slim
AC/DC voltage up to 600V Ergonomic 
True-RMS AC voltage and current for accurate measurements of non-linear signals  CAT IV 300V/CAT III 600V safety rating 
Resistance measurement up to 40kΩ with continuity detection  Hold button
Temperature  Soft carrying case
Capacitance  Backlit Display
White gloved hand holding a Fluke 324 TRMS Clamp Meter. The red jaw of the clamp meter surrounds a thick, black cable.

Fluke 325 TRMS Clamp Meter

The final and most high-end model in Fluke’s 320 Series is the Fluke 325 True-RMS Clamp Meter. This compact clamp meter offers the most comprehensive measurement capabilities including big AC/DC features, frequency measurement, and Min/Max functionality.

Measurement Capability  Features 
AC current up to 400A Slim
AC/DC voltage up to 600V Ergonomic 
True-RMS AC voltage and current for accurate measurements of non-linear signals  CAT IV 300V/CAT III 600V safety rating 
Resistance measurement up to 40kΩ with continuity detection  Hold button
Temperature  Soft carrying case
Capacitance  Backlit Display
Frequency  
Min/Max  

White gloved hand holding a Fluke 325 TRMS Clamp Meter

Fluke’s Clamp Meter Resources

If you’re still stuck and need more help. Don’t worry. Fluke has collated an array of useful resources to help you choose the correct clamp meter.

Click to View Fluke’s Clamp Meter Resources

Alternatively, for a quick overview of choosing a clamp meter, please watch Fluke’s video.

Further Information

For further help and advice regarding Fluke’s range of clamp meters, please don’t hesitate to contact our Sales team on 01642 931 329 or via our online form.

In the meantime, browse our complete collection of Fluke products including clamp meters and the 320 series.