Klein CL810 vs Fieldpiece SC680: Which Clamp Meter?
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Top pickFieldpiece SC680Check price
Klein has replaced the CL800 with the CL810, so this page compares Klein’s current clamp against the Fieldpiece SC680. Both are 600 A AC/DC True-RMS clamps with a CAT IV 600 V / CAT III 1000 V rating. The difference is how each is built to be used.
The two models compared
Best for: Commercial and VFD-heavy techs who want one wireless clamp that also logs to the Job Link app.
- 600 A AC/DC swivel clamp with inrush
- True-RMS with low-pass filter for VAC and Hz (VFD work)
- Power (kW) measurement; phase rotation test
- Dual Type K temperature inputs; resistance to 50 Mohm; NCV
- CAT IV 600 V / CAT III 1000 V
Why it stands out
- Swivel jaw, AC/DC amps with inrush
- Low-pass filter for accurate readings on VFD outputs
- Two temperature inputs for delta-T
- High safety rating: CAT IV 600 V / CAT III 1000 V
Keep in mind
- About 100 h battery life on a 9 V, less with wireless and backlight
- Heavy at about 480 g and long at 301 mm
Klein CL810 vs Fieldpiece SC680 at a glance
| Spec | Klein CL810 | Fieldpiece SC680 |
|---|---|---|
| Current | 600 A AC/DC, TRMS | 600 A AC/DC, TRMS, swivel jaw |
| Inrush | Yes | Yes |
| DC microamps | Yes | Yes, 1,000 uA DC |
| Capacitance | 6,000 uF | To 10 mF |
| Temperature | Yes | Two Type K inputs |
| Jaw | 1.4 in | – |
| Safety rating | CAT IV 600 V / CAT III 1000 V | CAT IV 600 V / CAT III 1000 V |
| Wireless | Not stated | Job Link app |
| Power and phase rotation | Not stated | Yes |
Where the Fieldpiece SC680 wins
- Wireless readings. You can watch amps from the thermostat or log them in the Job Link app.
- Power measurement and phase rotation. Useful on three-phase commercial equipment.
- VFD filter. Fieldpiece lists a low-pass filter on volts AC and frequency.
- Two temperature inputs for delta-T without a second meter.
Where the Klein CL810 wins
- No app required. Everything is on the clamp.
- Work light and a 1.4 in jaw, according to Klein’s catalog.
What this comparison does not tell you
Specs for the CL810 come from Klein’s catalog page and specs for the SC680 come from Fieldpiece’s product flyer. Both lists include DC microamps and capacitance, so the choice comes down to features and price.
Which one should you buy?
Either clamp can replace your multimeter on most calls. If you work on three-phase equipment or variable-speed drives and want wireless logging, start from the SC680. For a residential-only kit, the UEi DL389B covers microamps, capacitance and temperature in a smaller package. Our clamp meter guide compares all of them, and our SC680 review goes deeper on the Fieldpiece.
Frequently asked questions
Is the Klein CL800 or the Fieldpiece SC680 better for HVAC?
The CL800 is no longer in Klein's catalog. Against Klein's current CL810, the SC680 adds wireless logging and power measurement, while the CL810 adds a work light and needs no app. Both list DC microamps and capacitance.
Do both clamps have the same safety rating?
Yes. Both list CAT IV 600 V and CAT III 1000 V.
Which clamp is better for flame-sensor tests?
Both can. The CL810 lists DC microamps, and Fieldpiece lists a 1,000 uA DC range at 0.1 uA resolution for the SC680.
Keep reading
Sources
Specifications and product details were checked against these sources:
