Klein Tools CL700 Digital Clamp Meter, AC Auto-Ranging TRMS, Low Impedance (LoZ) Mode

The CL700's jaw opening is 1.38 inches (3.5 cm), so it will clamp a single conductor up to about that diameter. That covers most branch circuit and feeder conductors individually, but it will not go around a bundled set or a conductor assembly larger than 1.38 inches across. Current measurement tops out at 600A AC.

No. The clamp on the CL700 reads AC current only, up to 600A. For voltage it handles both AC and DC, rated 1000V AC and 1000V DC through the test leads. If you need DC amperage on a solar string or battery bank, this is the wrong meter.

Safety rating is CAT IV 600V and CAT III 1000V, Class 2 double insulated, and CE certified. CAT IV covers the service entrance and utility connection point; CAT III covers distribution panels and feeders up to 1000V, which includes 480V three phase gear.

Drop protection is rated to 6.6 feet (2 m), so a fall from a step ladder is within spec. Operating temperature is a narrower story: 32 to 104 degrees F (0 to 40 degrees C), so it is not rated to be used in freezing conditions. Ingress protection is IP40, meaning it keeps out small solids but is not water resistant. Do not use it in wet weather. Maximum operating altitude is 6562 feet (2000 m).

Low impedance mode puts a load on the circuit while measuring, which drains off induced or capacitively coupled voltage sitting on an unenergized conductor. In practice it tells you whether a wire in a crowded raceway or a switch leg is genuinely live or just showing a ghost reading. That is the difference between chasing a phantom fault and finding the real one.

Nothing else is required to start testing. The CL700 ships with a carrying pouch, test leads, a thermocouple with adapter, and batteries. It runs on 2 x AAA cells, so keep spares on the truck; a low battery indicator warns you before readings drift.

Yes, through the included thermocouple probe. Temperature range is -14 to 1000 degrees F (-26 to 538 degrees C), which covers supply and return air, bearing housings, motor frames, and breaker lug temperatures. The probe plugs in with the supplied adapter.

Through the leads the CL700 measures AC and DC voltage to 1000V, resistance to 60 megohms, continuity, capacitance to 6000 microfarads, frequency from 1 Hz to 500 kHz, and it tests diodes. The capacitance range is high enough for motor run and start capacitors, and the frequency range covers VFD output and generator checks.

The CL700 uses auto-ranging true RMS measurement, so readings on nonsinusoidal loads like variable frequency drives, electronic ballasts, and switching power supplies stay accurate where an averaging meter would read low. Readout is a 6000 count LCD.

It measures 9.09 inches long, 3.81 inches wide and 1.55 inches high, and weighs 0.738 lbs. Light enough to hold and clamp with one hand while the other stays clear of live parts, and it fits the included pouch on a tool belt.

Klein lists it as meeting the requirements for basic and controlled electromagnetic environments, which covers residential, office, and light industrial locations. Combined with the CAT III 1000V / CAT IV 600V rating, it suits property maintenance, commercial service calls, and MRO work. Heavy industrial environments with high electromagnetic interference are outside what Klein states for it.

Order Klein Tools model CL700. That is the manufacturer part number as well, and it is the AC auto-ranging TRMS clamp meter with Low Impedance mode, 600A clamp, and thermocouple.