# Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter: specs and price compared

A sourced, side-by-side comparison of the Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) (Klein Tools) and Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter (Southwire) among clamp meters.

## Side by side

| Spec | Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) | Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter |
| --- | --- | --- |
| US price | $152.54 | not published |
| Brand | Klein Tools | Southwire |
| Ac current range | 600 A | 400 A |
| Dc current range | 600 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 fetched product page) |
| Jaw opening | 1.38 in (3.5 cm) | — |
| Ac dc voltage range | 1000 V AC/DC | — |
| True rms | Yes | Yes |
| Resistance continuity | 60 MΩ max, with continuity | — |
| Capacitance | 6000 µF | Yes |
| Temperature | -14°F to 1000°F (-26°C to 538°C), via included thermocouple | Yes |
| Cat safety rating | CAT IV 600V / CAT III 1000V | CAT III 600V |
| Display count | 6000 | — |

## Key differences

- Ac current range: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) 600 A vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter 400 A
- Dc current range: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) 600 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 fetched product page)
- Capacitance: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) 6000 µF vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter Yes
- Temperature: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) -14°F to 1000°F (-26°C to 538°C), via included thermocouple vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter Yes
- Cat safety rating: Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) CAT IV 600V / CAT III 1000V vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter CAT III 600V

## Sources

- Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ): https://www.digikey.com/en/products/detail/klein-tools-inc/CL800/6597092 (digikey.com, verified 2026-08-05)
- Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter: https://www.southwire.com/tools-equipment/test-measurement/21550t-clamp-meter-400a-ac-dc/p/65031840 (southwire.com, verified 2026-08-05)

Canonical: https://frontdeskreview.com/gear/clamp-meters/klein-tools-cl800-vs-southwire-21050t/
Cite: Per The Front Desk Review, Klein Tools CL800 Digital Clamp Meter, AC Auto-Range TRMS, Low Impedance (LoZ) ($152.54) vs Southwire 21050T / 21550T 400A True RMS AC/DC Clamp Meter (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/clamp-meters/klein-tools-cl800-vs-southwire-21050t/
License: CC BY 4.0.