Fluke 325 True RMS Clamp Meter Review

We are committed to researching & testing the top products for you to buy. Some of the links in this post are affiliate links, and we may earn a commission on purchases made (at no extra cost to you)
[amazon box=’B0091EXB2A’] [amazon box=’B0091EXB2A’ template=’vertical’ float=’right’]

Plant maintenance engineers and electricians swear by the Fluke 325 for general and daily use. Since its AC and DC currents measure up to 400A, its testing quality is better than your average multimeter.

The Fluke 325 features a compact design for enhanced portable transportation. With the addition of Frequency, True-RMS and DC current measurements, this device has everything needed for troubleshooting. 

Check Price

Key Features

  • Hold function and backlight captures readings on display
  • Resistance measurements up to 40 kΩ
  • Frequency measuring range – 5 Hz to 500 Hz
  • ≤ 30Ω Continuity Detection
  • Measures temperatures from 10C to 400C

What’s Included

  • TL75 Test Leads
  • Two AAA Batteries
  • Soft Case
  • Type K Thermocouple
  • Fluke 325 Clamp Meter

In-depth Review of the Fluke 325

[amazon box=’B0091EXB2A’ template=’vertical’ float=’left’]

As the leading model in the Fluke 320 series, the Fluke 325 fails to disappoint. One of its highlight features is the jaw opening measures. When in use, they can measure the conductor condition without damaging or interrupting the current. 

The Fluke 325 is able to measure frequency up to 500 Hz. As for AC and DC voltage, it measures up to 600 V.  Since this clamp test meter can analyze multiple units, it’s a handy tool for electricians that need accuracy in their finger tips.

Also, the Fluke 325 is able to conduct resistance measurements within a 0-40 kΩ range. This device also measure the continuity, giving you more tools needed to get the correct information on a wire. 

The True RMS features allow users to analyze non-standard waveforms. The peak hold function operates correctly and helps with detecting rush current in an AC motor. For those wanting to have a useful clamp meter at an affordable price, the Fluke 325 is the answer. It’s definitely one of the best clamp meters on the market, along with the Fluke 323.

The Fluke 325 is good at providing accurate readings and works for most electrical tasks. Additional accessories that come included with the Fluke 525 is a soft carrying case and a type-K thermocouple. There is an instruction manual that you can also download online for added reference.

Check Price


Contact temperature-10.0°C to 400.0°C (14.0°F to 752.0°F)
AC voltageAccuracy1.5% ± 5 digits

Range600.0 V
DC voltageAccuracy1.0% ± 5 digits

Range600.0 V
Capacitance0 to 100.0 μF / 100μF to 1000 μF

Build Quality

The Fluke 325 is built to last thanks to its rugged build quality. You’ll get a dial selector switch and a sturdy clamp that’s easily opened. The test leads plug is placed on the bottom, reducing the chance of getting caught when you’re doing current measurements.

Display and Labels

While it isn’t the best resolution, the Fluke 325 comes with a 4000 count and a display that’s 0.01A. The backlit display is useful for all electricians as it allows them to work in dark and dingy spaces. 

Function and Performance

The Fluke 325 performs well for a device of its caliber. Since it is an auto-ranging clamp meter, you don’t have to worry about selecting individual ranges like most manual meters. This device is powered by AAA batteries, making them cheaper to replace than 9V devices.

Check Price


For added safety, each Fluke 325 device has been individually tested. It’s both CAT-III (600V) and CAT IV (300V) certified, making them safe for professional applications. There is a 9kv surge protection rating which helps with preventing shocks from harming the user. 

Pros And Cons of Fluke 325

What We Like
  • Enhanced frequency measurements
  • Peak hold fucntion hodls well
  • Third Pro Here
  • Min/Max Feature Included
  • Backlit display
What We Don’t Like
  • First Con Here
  • Clamp cannot test more than one wires
[amazon box=’B0091EXB2A’]

About Blake Sutton

Blake has worked as an electrician for over 10 years, receiving his Journeyman Electrician license in 1998. Looking to take his professional electrical career further, in 2008 he received his Bachelor of Science in Electrical Engineering (BSEE) from the University of Texas in Austin. Blake now works full time as an electrical engineer, specializing in power systems.