Amprobe
Amprobe AMP-25 AC/DC TRMS Mini-Clamp
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Best Clamp Meters · head-to-head
Amprobe AMP-25 AC/DC TRMS Mini-Clamp vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter
A sourced, side-by-side comparison. Amprobe AMP-25 AC/DC TRMS Mini-Clamp is cheaper at —. Every spec and price links to its source.
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Southwire
Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Amprobe AMP-25 AC/DC TRMS Mini-Clamp | Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter |
|---|---|---|
| US price | — | — |
| Brand | Amprobe | Southwire |
| Released | — | — |
| AC current range | 60.00 / 300.0 A | 400 A |
| Dc current range | 60.00 / 300.0 A | 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 product page checked) |
| Jaw opening | 1.0 in (25 mm) max | — |
| AC dc voltage range | — | — |
| True RMS | Yes | Yes |
| Resistance continuity | — | — |
| Capacitance | — | Yes |
| Temperature | — | Yes |
| Cat safety rating | CAT III 600V | CAT III 600V |
| Display count | 6000 | — |
Sources — Amprobe AMP-25 AC/DC TRMS Mini-Clamp: amprobe.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 Amprobe AMP-25 AC/DC TRMS Mini-Clamp 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: Amprobe AMP-25 AC/DC TRMS Mini-Clamp 60.00 / 300.0 A vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter 400 A
- Dc current range: Amprobe AMP-25 AC/DC TRMS Mini-Clamp 60.00 / 300.0 A vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter 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 product page checked)