Fluke 324 VS 325: Which Multimeter Suits You Best?

Choosing a good quality clamp multimeter is not as easy as it seems; when you’re looking to invest in one, there are many factors to consider, including accuracy, price point, sensitivity, and measurement range. Right now, two of the most popular options on the market are the Fluke 324 and 325 Clamp Multimeters. In this comprehensive comparison review, we take a closer look at both models so you can decide which one is best for your needs. We cover everything from design features to usability considerations so you can decide which model to buy. Let’s dive into our detailed analysis!

Fluke 324 True-RMS Clamp Meter 

The Fluke 324 True-RMS Clamp Meter is not just any ordinary tool – it’s a reliable companion for professional electricians who prioritize accuracy and efficiency. This robust clamp meter offers a wide range of features to cater to the demands of the job, including measuring AC up to 400A and AC/DC voltage up to 600V. With its ability to measure resistance up to 4k and detect continuity with ease, the Fluke 324 ensures precise readings every time. What sets this model apart is its added functionality, such as temperature measurements from -10C to 400C and capacitance readings up to 1000F. The inclusion of a backlight and hold function further enhances usability by capturing readings on the display, making it an indispensable tool in your electrical troubleshooting arsenal.

One of the standout benefits of the Fluke 324 True-RMS Clamp Meter is its unparalleled safety features that are designed to meet industry standards. With a CAT III 600V and CAT IV 300V rating, this clamp meter provides peace of mind when working with high-voltage systems, ensuring you can focus on your tasks without compromising safety. Additionally, the two-year warranty offered along with a soft carrying case adds convenience and protection for your investment in this essential tool. Whether you’re measuring current or voltage on non-linear signals, the True RMS capabilities of the Fluke 324 guarantee accurate results that are crucial for diagnosing complex electrical issues with confidence.

What’s in the box:

Here’s what you’ll find in the box when you open it:

  • Fluke 324 True-RMS Clamp Meter
  • (1 pair) TL75 Test Leads
  • Type K Thermocouple
  • Two AAA Batteries (Already Installed)
  • Soft Case
  • Quick Reference Guide

Everything you need to get started and make the most of your new Fluke 324 True-RMS Clamp Meter is in the box.

Key Features of the Fluke 324 Clamp Meter

Robust and Reliable: The Fluke 324 Clamp Meter is a durable True-RMS clamp meter that you can count on.

Versatile Measurements:

It can measure AC up to 400 A and AC/DC voltage up to 600V, making it suitable for various electrical tasks.

Resistance and Continuity:

You can measure resistance up to 4kΩ, and it’s equipped with continuity detection for values less than or equal to 30Ω.

Enhanced Features:

Building upon the 323 Clamp, it offers additional capabilities such as temperature measurement (from -10°C to 400°C) and capacitance measurement up to 1000μF. Plus, it comes with a convenient backlight and hold function to capture readings on the display.

Ideal for Electricians:

This True-RMS Clamp Meter is a dependable tool for commercial and residential electricians. Its True-RMS measurements ensure accuracy, and its slim design makes it easy to transport and use. The large display simplifies troubleshooting.

HVAC Ready:

With temperature and capacitance measurements, the Fluke 324 has everything an HVAC technician could wish for.

Safety First:

It holds a CAT III 600 V and CAT IV 300 V safety rating, ensuring your protection during electrical work.

True RMS Technology:

The meter provides True RMS AC voltage and current measurements, ensuring accuracy even with non-linear signals.

Wide Range of Measurements:

  • Measures AC up to 400 A
  • Measures AC/DC voltage to 600V
  • Measures resistance to 4kΩ with continuity detection ≤ 30Ω
  • Measures temperature from -10°C to 400°C
  • Measures capacitance to 1000μF


The backlight and hold function make capturing readings a breeze.

Warranty and Portability:

 It has a reassuring two-year warranty and a soft carrying case for easy transportation.


  • Users appreciate the high build quality and durability of the Fluke 324 Clamp Meter. It’s seen as a reliable instrument that can withstand harsh conditions.
  • Many users commend the Fluke 324 for its accuracy and reliability. It consistently delivers precise measurements.
  • Users who switched to a Fluke meter express satisfaction and believe it’s worthwhile. The accuracy and reliability make it money well spent.
  • It’s considered a solid choice for a broad range of electrical tasks, making it suitable for someone starting HVAC work.
  • Some users have reported difficulties measuring resistance on thermistors in a minisplit system. This could be a limitation for specific applications, as it didn’t perform as expected.
  • Battery Contact Fragility: A common complaint is that the battery contacts on the Fluke 324 are fragile and can break easily, even without much provocation. This is a recurring issue for some users and suggests a potential design flaw.

Fluke 325 True RMS Clamp Meter

Fluke 325 True-RMS Clamp Meter – an indispensable tool for electricians seeking unparalleled accuracy and safety in troubleshooting electrical systems. This sleek device boasts a compact design that effortlessly fits into your toolkit, ready to tackle any job with ease. Equipped with a large display that ensures clear readings, this clamp meter offers True-RMS AC voltage and current measurements on even the most complex signals, making it a reliable companion for all your testing needs. Certified to CAT III 600 V CAT IV 300 V standards, you can trust this meter to deliver consistent and accurate results every time.

With its ability to measure both AC and DC currents up to 400 A through the jaw or voltages up to 600 V using test leads, this device simplifies your work while enhancing efficiency. The additional features such as frequency measurement from 5 Hz to 500 Hz, resistance measurement up to 40 k, and temperature monitoring from -10 C to 400 C using the included K-type thermocouple expand its utility beyond basic testing applications. Utilize the Min Max function provided by this clamp meter to effortlessly record critical data points, offering you unmatched convenience on each project.

What’s in the box:

Here’s what you’ll find inside the box:

  • Fluke 325 True-RMS Clamp Meter
  • TL75 Test Leads
  • Type K Thermocouple
  • Two AAA Batteries (Already Installed)
  • Soft Case

Everything you need to start with your Fluke 325 True-RMS Clamp Meter is in the box.

Key Features of The Fluke 325 Clamp Meters

Versatile Measurements:

The Fluke 325 Clamp Meter is a versatile tool that can handle various measurement tasks, including True-RMS AC/DC, voltage, temperature, and frequency.

Comprehensive Package:

When you purchase the Fluke 325, you receive the clamp meter, test leads, a K-type thermocouple, and a soft case. This all-inclusive package ensures you have everything you need to do the job.

Efficient Troubleshooting:

This reliable tool is designed with a slim profile for easy transport and use, making it a favorite among commercial and residential electricians. The large display enhances troubleshooting efficiency.

Complete Measurement Functions:

The Fluke 325 goes beyond the basics. In addition to True-RMS AC and voltage on non-linear loads, it can measure DC, DC voltage, temperature, and frequency. This multi-functionality means you can carry fewer tools in your toolkit and accomplish more tasks.

Day-to-Day Problem Solving:

With a strong combination of measurement functions, the Fluke 325 helps you tackle the everyday issues you encounter on the job. It’s reliable, user-friendly, and budget-friendly, making it an excellent choice for electricians.

Safety and Accuracy:

The Fluke 325 offers True-RMS AC voltage and current measurements, even on non-linear signals. It has a CAT III 600 V and CAT IV 300 V safety rating, ensuring your work protection.

Additional Capabilities:

The Fluke 325 can measure AC/DC up to 400 A through the jaw, AC/DC voltage up to 600 V using test leads, frequency from 5 Hz to 500 Hz, and resistance up to 40 kΩ. It even measures temperatures from -10°C to 400°C with the included K-type thermocouple.

Recording Function:

 The Min/Max function lets you capture and track essential values during measurements.


  • Accurately measures current in DC and AC in Amps, making it great for low-voltage circuits.
  • Simple and reliable design.
  • It can measure voltage, capacitance, resistance, and continuity, adding flexibility.
  • Available customer support.
  • Limitation with Extension Cords: It may not accurately measure AC extension cords.
  • Lead Quality: The leads are criticized for their inflexibility and loose caps.


Choosing between the Fluke 324 and the Fluke 325 clamp meters depends on your electrical needs. The Fluke 324, a rugged and dependable True-RMS clamp meter, stands out as an excellent option for those who value simplicity and fundamentals. It efficiently measures AC up to 400 A, AC/DC voltage up to 600V, and resistance up to 4kΩ, all while ensuring continuity with a sensitivity of ≤ 30Ω. On top of that, it brings valuable additions to the table, such as temperature measurement, capacitance assessment, and a convenient backlight. So, if you seek a reliable tool that covers the basics and adds some essential extras, the Fluke 324 is an ideal choice.

Conversely, the Fluke 325 is a versatile powerhouse that tackles various electrical measurement tasks. This True-RMS clamp meter excels in handling both AC and DC and voltage, making it a go-to tool for multifaceted professionals. Equipped with essential accessories like test leads and a K-type thermocouple for temperature readings, it’s ready to tackle diverse front-line measurement challenges. Whether you’re dealing with AC/DC, voltage, temperature, or frequency, the Fluke 325 covers you. So, your choice between these two remarkable clamp meters ultimately depends on the extent of your electrical tasks. If you appreciate the simplicity of a reliable tool with added features, the Fluke 324 is the way to go. However, if your needs extend to a broader range of measurements and versatility, the Fluke 325 is the perfect companion. Whichever you choose, you can rest assured that you’ll be well-equipped for a wide range of electrical endeavors, whether you’re a professional or a DIY enthusiast.

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