Klein Tools CL120 clamp meter
Checked 2026-10-17 against Klein Tools's US product page by Rob, licensed electrician
The Klein Tools CL120 is a clamp meter, sold on its own. Klein Tools publishes CAT III 600 V safety rating, 400 A AC current (max range), 600 V AC voltage (max range), 600 V DC voltage (max range). In the box: Clamp Meter, Carrying Case, Instructions, Test Leads, Batteries. Source: Klein Tools's US product page, checked 2026-10-17.
Key specs
- Safety rating (IEC 61010 CAT)
- CAT III 600 V
- AC current, max range
- 400 A
- AC voltage, max range
- 600 V
- DC voltage, max range
- 600 V
- Jaw opening
- 1.6 in
- Display resolution
- 2,000 counts
- Batteries (cells)
- 3 x AAA
Not on Klein Tools's US product page for the CL120: DC current, max range; True-RMS; Warranty. We do not guess.
In the box
- IncludedClamp meter: Clamp Meter
- IncludedTest leads: Test Leads
- IncludedBatteries: Batteries
- IncludedCase or holster: Carrying Case
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Find CL120 prices on Amazon Find CL120 prices at Acme Tools Find CL120 prices at eBay New tab, US retailers. Search results open where no exact listing is on file. Check the listing says CL120; marketplace sellers vary.- US retailer, ships from the US
- Free shipping over $199
- Family owned since 1948
- Acme Tools, as published on its site, checked 2026-10-17
All specs
| Safety rating (IEC 61010 CAT) | CAT III 600 V |
| AC current, max range | 400 A |
| AC voltage, max range | 600 V |
| DC voltage, max range | 600 V |
| Jaw opening | 1.6 in |
| Display resolution | 2,000 counts |
| Batteries (cells) | 3 x AAA |
| Resistance, max range | 20 MΩ |
| Non-contact voltage detection | Yes |
| Backlit display | Yes |
| Drop protection | 6.6 ft (2 m) |
| Size | 8.45 x 3.5 x 1.5 in (L x W x H) |
| UPC barcode | 092644692833 |
Ratings are Klein Tools's published figures from its US product page, listed under Sources. Anything not on that page is left out rather than guessed. Check this against another model.
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Quick answers
What is the CL120's safety (CAT) rating?
Klein Tools rates it CAT III 600 V. CAT IV covers the service entrance and utility side, CAT III distribution-level circuits such as panels and feeders; the lower of the meter's and the test leads' ratings is the one that applies. See our <a href="/cat-ratings-explained/">CAT ratings guide</a>.
Does the CL120 measure DC current?
Klein Tools's spec table lists AC current (up to 400 A) and no DC current range.
What batteries does the CL120 use?
3 x AAA (dry cells; no tool battery platform).
Does the CL120 come with test leads?
Yes: Test Leads.
Owner reviews
Read the owner reviews on KleinTools.com
Manuals and official documents
Sources
- Klein Tools US product page CL120, retrieved 2026-10-17
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Researched by Rob, licensed electrician (Australia). Found an error? Tell us.
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