No photo yet
Fluke
Fluke 323 True-RMS Clamp Meter
$207.99
Best Clamp Meters · head-to-head
Fluke 323 True-RMS Clamp Meter vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter
A sourced, side-by-side comparison. Fluke 323 True-RMS Clamp Meter is cheaper at $207.99. Every spec and price links to its source.
No photo yet
Southwire
Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter
—
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Fluke 323 True-RMS Clamp Meter | Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter |
|---|---|---|
| US price | $207.99 | — |
| Brand | Fluke | Southwire |
| Released | — | — |
| Ac current range | 400.0 A, 2.0% ±5 digits (45-65 Hz) / 2.5% ±5 digits (65-400 Hz) | 400 A |
| Dc current range | — | 400 A (per user-facing marketing copy and verified purchaser reviews on southwire.com describing DC clamp-amp use; exact numeric DC accuracy table not published on the fetched product page) |
| Jaw opening | 30 mm (600 MCM) | — |
| Ac dc voltage range | 600.0 V AC (1.5% accuracy) / 600.0 V DC (1.0% accuracy) | — |
| True rms | Yes | Yes |
| Resistance continuity | 400.0/4000 Ω, 1.0% accuracy; continuity beeper ≤70 Ω | — |
| Capacitance | — | Yes |
| Temperature | — | Yes |
| Cat safety rating | CAT III 600V / CAT IV 300V | CAT III 600V |
| Display count | — | — |
Sources — Fluke 323 True-RMS Clamp Meter: fluke.com (verified 2026-08-05). Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter: southwire.com (verified 2026-08-05).
What's the difference between the Fluke 323 True-RMS Clamp Meter and Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter?
Where the two actually differ on the specs we track (2 of 10). Matching specs are omitted.
- Ac current range: Fluke 323 True-RMS Clamp Meter 400.0 A, 2.0% ±5 digits (45-65 Hz) / 2.5% ±5 digits (65-400 Hz) vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter 400 A
- Cat safety rating: Fluke 323 True-RMS Clamp Meter CAT III 600V / CAT IV 300V vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter CAT III 600V