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Fluke 323 digital clamp meter, grey handheld body with hinged jaw and LCD screen

Fluke

Fluke 323 True-RMS Digital Clamp Meter measurement tool

SKU CH-1QEC-N3J0Z

Measures AC current up to 400 A and AC/DC voltage up to 600 V with true-RMS accuracy and CAT IV 300 V safety rating

  • TypeElectronic
  • Accurate readings on non-linear loads with true-RMS technology
  • Measures AC current up to 400 A for common circuits
  • Handles AC and DC voltage up to 600 V
  • CAT IV 300 V and CAT III 600 V safety rating
  • Data hold function freezes readings for easy recording

Purpose & User

The Fluke 323 True-RMS Digital Clamp Meter measures AC current up to 400 A and AC/DC voltage up to 600 V. Its true-RMS circuitry delivers accurate readings on non-linear signals found in modern electrical systems. The CAT IV 300 V and CAT III 600 V safety rating suits residential and commercial troubleshooting. A slim 207 mm by 75 mm by 34 mm body weighs 265 g for comfortable daily use.

Upgrade Path

This clamp meter replaces basic average-responding models that misread distorted waveforms from variable-speed drives or electronic ballasts. The true-RMS function makes the jump worthwhile when troubleshooting circuits with harmonic content. Data hold freezes the display for safe recording in tight panels. Resistance measurement up to 4000 and continuity beeper below 70 add verification steps without swapping tools.

Capacity & Limits

The 400 A AC current range covers typical branch-circuit and feeder loads in commercial buildings. Voltage measurement up to 600 V handles standard three-phase service voltages. The instrument stops at 400 A AC; it does not measure DC current or higher currents found in large industrial feeders. Frequency, capacitance and temperature functions are absent, so a separate meter is needed for those parameters.

Highlights

  • Accurate readings on non-linear loads with true-RMS technology
  • Measures AC current up to 400 A for common circuits
  • Handles AC and DC voltage up to 600 V
  • CAT IV 300 V and CAT III 600 V safety rating
  • Data hold function freezes readings for easy recording

Specifications

BrandFLUKE
TypeElectronic

Questions about this item

What jaw opening fits the 400 A AC current clamp on the Fluke 323?

The slim jaw opens wide enough for standard conductors carrying up to 400 A AC while keeping the tool at 207 mm x 75 mm x 34 mm.

How do I enable True-RMS on the Fluke 323, and what step do users miss?

True-RMS is always active; the common mistake is forgetting to press the Data Hold button to freeze the reading before removing the clamp.

When should the test leads supplied with the Fluke 323 be replaced?

Replace the leads if the insulation shows cracks or the probes no longer read continuity below 70 Ω, ensuring the CAT IV 300 V / CAT III 600 V rating stays valid.

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