Klein Tools CL2000 400A AC/DC True RMS Clamp Meter

Both. The CL2000 is a 400A AC/DC clamp meter, so it reads DC current through the jaw as well as AC. That matters if you're working on solar strings, battery banks, or DC control circuits, where an AC-only clamp reads nothing at all.

True RMS means the meter computes the actual heating value of the waveform rather than assuming a clean sine wave. On circuits feeding VFDs, LED drivers, electronic ballasts, or switching power supplies, an averaging clamp can read meaningfully off on distorted current. The CL2000 is a True RMS instrument, so it's the one to carry for troubleshooting modern non-linear loads.

You can't clamp a two-conductor cord directly, because the hot and neutral currents cancel and the meter reads near zero. Klein's line splitter, catalog number 69400, is listed as an accessory for the CL2000 and separates the conductors so the jaw sees one of them. That's the piece you need for plug-load troubleshooting.

Yes, the CL2000 has a non-contact voltage tester built into it. You can sweep a conductor or device for presence of voltage before you open anything up, then take the actual measurement with the same tool. That's one less tester on the belt.

It has a magnetic mount and onboard lead storage, so it hangs off the panel enclosure or any steel surface while you keep both hands on the probes. There's also a backlit display and a worklight for reading it inside a dark gear room or a crawlspace.

Klein lists replacement test lead sets 69410 and 69416 for the CL2000. Leads are the part that fails first on a clamp meter, so it's worth ordering a spare set with the meter rather than losing a day to a cracked lead.

400A covers branch circuits, feeders, and most motor and rooftop unit loads you'll clamp in a commercial building. Where it runs out is main service conductors on a large building, which routinely exceed 400A, and there you want a higher-range clamp or a flexible current probe instead.

The part number is CL2000, sold as a single model with no variations to specify. Ordering by that catalog number gets you the 400A AC/DC True RMS meter with the built-in non-contact voltage tester.

There's an analog bar graph alongside the digital reading. It's what you watch when a load is fluctuating or a reading is drifting, since a digit-only display lags behind and makes an unstable circuit hard to spot.