Clamp Meters and DC Current: 3 Listings Compared
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Three clamp meters appear in this search pool, and only one of them states DC current measurement in its own listing text. The question in the title can therefore be answered from stated specifications for that one listing alone. The other two list AC current, and one of them gives amperage readings without naming the current type.
Listing figures were checked on 11 October 2026 and are shown as the sellers state them. Where a listing gives two different numbers for the same item, both figures are shown.
Quick answer
Quick answer: the FNIRSI DMC-100 listing states AC and DC current up to 600 amps. The Klein CL120 listing states AC current only, with a 400 amp range. The Fieldpiece SC260 listing gives AAC readings and lists amperage without naming AC or DC. If DC current is the requirement, the FNIRSI is the only listing in this group that states it, and its figures should be confirmed on the product page.
The three clamp meters at a glance
| Listing | Current wording | Stated current figure | Weight and size as listed |
|---|---|---|---|
| Klein Tools CL120 (B08CP6GL49) | AC current only | 400 amp AC | 9.76 ounces; 8.45 x 3.51 x 1.51 inches |
| Fieldpiece SC260 (B00KLYJG78) | AAC readings; amperage without AC or DC label | Not given | 0.27 g as listed; 3.5 x 3 x 9.1 inches |
| FNIRSI DMC-100 (B0DP2L9CFR) | AC and DC current | Up to 600 amps | 6.72 ounces; 7.7 x 2.91 x 1.14 inches |
How these three were selected
The search pool for this term holds twelve products. Three are clamp meters and are compared here. The other nine were left out: four multimeters with a voltage mode, a tape measure, a Stetzerizer microsurge meter for dirty electricity, and three electric meters for RV or home use that are kWh or watt meters rather than clamps.
Only the listing text, specifications and bullets were used. The pool was refreshed on 13 October 2026.
The product cards
Each card gives the wording the listing uses, followed by the figures it states. The order follows the search pool.
1. Klein Tools CL120 digital clamp meter
The title reads auto-ranging 400 amp AC, and the included components line names an AC auto-ranging 400 amp clamp meter. The bullets say the clamp measures AC current and non-contact voltage, while AC and DC voltage, resistance and continuity come through the test leads. That split places the clamp itself on AC current only.
The listing gives an item weight of 9.76 ounces and dimensions of 8.45 x 3.51 x 1.51 inches. The bullets mention a backlit display, a side test lead holder, and an optional magnetic hanger, cataloged as 69445 or 69417. The warranty line reads see manufacturer website.
2. Fieldpiece SC260 compact HVACR clamp multimeter
The title calls it a compact HVACR clamp multimeter with True RMS, temperature, capacitance and a backlight. The bullets say it gives VAC and AAC readings, which are AC volts and AC amps, and also lists non-contact voltage, amperage readings, a continuity warning and a diode test.
The amperage line does not say whether it reads AC, DC or both, so this listing cannot answer the DC question. The specification table gives the style as voltage tester, while the title and bullets describe a clamp meter. The item weight is listed as 0.27 g, which looks out of line with its listed size, so that figure should be confirmed on the product page. The dimensions are 3.5 x 3 x 9.1 inches.
View Fieldpiece listing on Amazon
3. FNIRSI DMC-100 clamp meter
The title gives a 9999 count TRMS clamp meter with 600A AC/DC amp measurement. The bullets give 10000 counts and AC/DC current up to 600A. The listing states that it measures AC and DC current up to 600 amps, along with voltage, resistance, capacitance, frequency, temperature and NCV.
The bullets describe real-time curve recording that stores 8 sets of real-time data and 30 sets of historical records, a 2 inch TFT display, and a built-in 1500mAh rechargeable lithium battery charged over Type-C. The listed weight is 6.72 ounces and the dimensions are 7.7 x 2.91 x 1.14 inches. The included items are a clamp meter, two multimeter pens, a temperature probe and a Type-C cable.
Worked example: matching a current to the listed ranges
Suppose a circuit needs a reading of 500 amps DC. The Klein listing tops out at 400 amps and states AC current only, so it cannot be matched to this reading from its listed figures.
The FNIRSI listing states AC and DC current up to 600 amps, so 500 amps sits 100 amps below its top figure. The Fieldpiece listing gives no current range at all, so it cannot be matched to a figure either.
Choosing from these three listings therefore means checking the current type first and the range second.
For a wider view of clamp options, see the AC and DC current clamp meter guide and the true RMS clamp meter guide.
What the listings do not say
- The listings give no DC accuracy figure for any of the three clamps.
- The Klein and Fieldpiece listings give no maximum DC current, because neither states that it measures DC current.
- The FNIRSI listing gives two counts figures and two current type descriptions, which means its own specification is not consistent across fields.
- The Fieldpiece weight of 0.27 g and its style line of voltage tester both conflict with the rest of its listing text.
- None of the three listings states a sample rate, a display update speed or a battery life figure.
Checklist before choosing a clamp for DC work
- Check the current type first. Only the FNIRSI listing names DC current, so only that listing can be considered for a DC job from its stated figures.
- Check the range against the largest current you expect. The FNIRSI top figure of 600 amps is listed above the 400 amp top of the Klein.
- Check the fields that conflict. The FNIRSI counts, the Fieldpiece style and weight, and the FNIRSI style line each need a product page check before purchase.
Clamp meters that are not in this group are covered in the handheld clamp guide, and the auto-ranging multimeter guide covers meters that use test leads only.
Frequently asked questions
Can a clamp meter measure DC current?
The FNIRSI DMC-100 listing states that it measures AC and DC current up to 600 amps. The Klein CL120 listing states AC current only, and the Fieldpiece SC260 listing gives amperage readings without naming AC or DC.
What current range does the Klein CL120 state?
The title and bullets give a 400 amp AC auto-ranging clamp. The listing does not say whether that range also covers DC current.
Why do the FNIRSI counts differ?
The title says 9999 counts and a bullet says 10000 counts. The style line also reads 10000 Counts AC Current, which conflicts with the AC and DC wording elsewhere. The listing does not say which figures are correct, so the product page should be checked.
Does any of the three listings give a DC accuracy figure?
No. None of the three listings gives an accuracy figure for DC current in the fields or bullets reviewed.
Is the FNIRSI listing aimed at DC battery work?
The bullets describe automotive and household use, including vehicle battery drain tracking and RV DC system analysis. The Klein and Fieldpiece listings do not describe DC work.
Conclusion
For DC current, the three listings give one clear answer: the FNIRSI DMC-100 states it, up to 600 amps. The Klein CL120 is described for AC current, and the Fieldpiece SC260 does not name the current type. Confirm the current type, range and count figures on each product page before buying for a specific job.
