A low-cost true-RMS AC clamp for home and light electrical work, with temperature for basic HVAC checks.
Amazon $69.97
A simple, well-built true-RMS AC clamp for electricians who want a Fluke for everyday panel and circuit checks.
- 400 AAC current
- NoDC current
- CAT IV 300 V / CAT III 600 VSafety
- 30 mmJaw
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
- True-RMS readings stay accurate on electronic and variable-speed loads
- Rated CAT IV 300 V, so it is safe at the meter base and service entrance
- Two-year Fluke warranty
- Reads AC current only, no DC for solar, batteries or vehicles
- No non-contact voltage detector, inrush or temperature
The Fluke 320 Series family
Every Fluke 320 Series model we rank, smallest first. Ratings compare each against its own type.
| Model | AC current | Rating | Price |
|---|---|---|---|
| Fluke 323 (this one) | 400 A | 3.0/5 | $152.85 |
| Fluke 325 | 400 A | 3.5/5 | $298.49 |
How it scores
The rating comes from 8 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | FLUKE-323 (5065521) |
|---|---|
| Measurement | |
| AC current (jaw) | 400 A |
| DC current (jaw) | No |
| Voltage | 600 V |
| Current accuracy | 2% of reading |
| Jaw opening | 30 mm |
| Safety | |
| CAT rating | CAT IV 300 V / CAT III 600 V |
| Features | |
| True RMS | Yes |
| Inrush | No |
| LoZ mode | No |
| Non-contact voltage | No |
| Low-pass filter | No |
| Temperature | No |
| Phone app | No |
| Build | |
| Weight | 265 g |
| Warranty | 2 years |
Alternatives in this type
A plain true-RMS AC clamp for electricians and technicians who only need current, voltage and resistance.
Amazon $66.99A basic AC clamp for occasional current checks on plain resistive and motor loads, at an entry price.
Amazon $88Compare
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