Product overview: Fluke 323 True RMS Clamp Meter

Fluke 323 True-RMS clamp meter delivers rugged reliable performance for general electrical troubleshooting

The Fluke 323 clamp meter is a good basic troubleshooting tool for commercial and residential electricians. It includes True RMS measurements, optimized ergonomics, and large display for efficient troubleshooting. It's designed to perform in the toughest environments and provide noise-free, reliable results, so you can trust it to help you confidently diagnose problems almost anywhere. Use it to verify the presence of load current, AC voltage, and continuity of circuits, switches, fuses and contacts. Its slim, compact size and rugged design make it well suited for measuring current up to 400 A in tight cable compartments.

The Fluke 323 comes with a two-year warranty and a soft carrying case.

Other useful features:

  • Features slim, ergonomic design for measuring in tight cable compartments
  • Presents measurements on a large, easy-to-read display
  • Hold function captures a reading on the display
  • Features a CAT III 600 V, CAT IV 300 V safety rating
  • Comes with a two-year warranty and soft carrying case

What's in the box:

  • 323 Clamp Meter
  • (1 pair) Test leads
  • Soft case
  • Quick Reference Guide

Specifications: Fluke 323 True RMS Clamp Meter

AC currentRange400.0 A
Accuracy2% ± 5 digits (45 Hz to 65 Hz)
2.5% ± 5 digits (65 Hz to 400 Hz)
DC currentRange-
AC voltageRange600.0 V
Accuracy1.5% ± 5 digits
DC voltageRange600.0 V
Accuracy1.0% ± 5 digits
ResistanceRange400.0 Ω/ 4000 Ω
Accuracy1.0% ± 5 digits
Continuity≤ 70 Ω
AC responseTrue-RMS
Data holdYes
Contact temperature-
SizeH x W x D (mm)207 x 75 x 34
Max wire diameter30 mm (600 MCM)
Weight265 g
Category ratingCAT III 600 V
CAT IV 300 V

Models: Fluke 323 True RMS Clamp Meter

Fluke 323
Fluke 323 True RMS Clamp Meter
Buy it


  • Test leads
  • Soft case
  • User's manual

Is the Fluke 323 comes pre-calibrated from factory?

Asked by: Misha
Yes, the Fluke 323 True RMS Clamp Meter comes calibrated from the factory. If you require a traceable certification of calibration, you will need to request that service at the time of purchase.
Answered by: FlukeCorp
Date published: 2023-09-19

Does the Fluke 323 measure resistance?

Asked by: Fluke
The Fluke 323 clamp meter measures resistance to 4 kΩ with continuity detection.
Answered by: Fluke Staff
Date published: 2023-05-01

The user manual shows it reads uf. Does it?

Asked by: Jon O
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Rated 2 out of 5 by from Not the quality I thought it would be ! Purchased model 323 used it twice and on third attempt the unit was dead! I owned it about 3 years, to be honest it spent most of its life on my boat. Totally disappointed I wanted a quality product, sorry for the bad news!
Date published: 2020-09-21
Rated 3 out of 5 by from Terrible meter 1 month old...leads have to continually be pushed into the meter...chases down several non issues due to flaws reading...
Date published: 2020-05-26
Rated 1 out of 5 by from 3 years old meter with a critical error Bought this meter 3 years ago maybe used 10 times. Went to use today First time in about a year. Meter came up with a critical error. Not what I expect from a fluke model. I would not buy Or recommend this fluke model. Fluke let me down when I needed it. I called fluke representative and was told out of warranty you got to buy another one I can’t help you. Buy another meter. Another meter that showed me dependability
Date published: 2019-08-06
Rated 4 out of 5 by from disappointed less than 6 months old and its showing 1 amp as soon as i turn it on.
Date published: 2018-06-13
Rated 5 out of 5 by from Excellent product! Using this in the field (in an HVAC capacity) has been wonderful and reliable, I would like to see some new innovations or products that utilize a smaller clamp that allows me to fit the device in tighter spaces, as measuring amperage in disconnects is a little cumbersome when line and load leads are tight. Otherwise it's a wonderful durable product that hasn't let me down.
Date published: 2018-06-04
Rated 5 out of 5 by from easy to use It is the second one we bought they are very good, I will definatellt get more as needed.
Date published: 2018-06-04
Rated 5 out of 5 by from LIGHTWEIGHT, EASY TO USE This is one of the best instruments that I have owned. My dad started using these back in the 80's.
Date published: 2018-04-05
Rated 5 out of 5 by from Great features with Fluke legendary quality. I have a couple Fluke meters, the first I purchased around 1983 and it still works great today so when I needed a clamp meter for a specialty job I went straight to Fluke and am still impressed
Date published: 2018-01-29
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