As an Amazon Associate, Akermin earns from qualifying purchases. Product links on this page are affiliate links.
KLEIN TOOLS · Klein Tools CL710 Digital Clamp Meter, 600A AC/DC Auto Ranging | With TRMS, AC/DC Volt/Current, LoZ, Continuity, Frequency, Capacitance, NCVT, More
View on AmazonPrice and availability are shown on Amazon and can change at any time.
The Klein Tools CL710 is a general-purpose 600A AC/DC clamp meter. The listing publishes True RMS, a 6.6-foot drop protection rating, IP40 ingress protection, a transflective reverse-contrast display, a lighted dial, integrated non-contact voltage detection in the jaw, and functions for AC/DC current, voltage, resistance, continuity, frequency and capacitance. It also lists Max/Min, relative mode, data hold, auto power-off, an integrated lead holder and a mount for an optional magnetic attachment. For a first hour, expect to spend most of it on the dial, the jaw and the zeroing routine rather than on the display. The listing does not publish a DC current accuracy figure, a CAT safety rating, a jaw opening size or a battery type, so those remain open questions before you rely on it for a specific task. If you need a higher current range, the Klein CL910 on this site is the 2000A alternative; if you need power quality recording, the ETCR8430 is a different class of instrument.
What the box tells you before the jaw opens
The listing for the CL710 is a specification sheet, not a manual. It tells you the meter measures AC/DC current, voltage, resistance, continuity, frequency and capacitance. It tells you the clamp delivers True RMS readings, which matters when the waveform is not a clean sine wave: a True RMS meter calculates the heating equivalent of the waveform rather than assuming a sine shape. That is the difference between a number that matches a load bank and a number that drifts when an inverter or a variable-speed drive is on the circuit.
The physical claims are specific. The meter carries a 6.6-foot (2 m) drop protection rating and IP40 ingress protection. IP40 means protection against solid objects over 1 mm and no water protection, so the listing is describing a meter that survives a drop onto a bench or a floor but not rain. The display is described as transflective reverse-contrast, which means it reflects ambient light rather than relying only on a backlight, and the dial is lighted. Both are useful in a dark panel or a ceiling void.
What the box does not tell you, because the listing does not publish it, is the jaw opening, the battery type, the CAT safety rating, the DC current accuracy figure, or the weight. Those are the first things a technician looks for, and they are absent here. Treat the first hour as a familiarisation exercise, not a commissioning test.
The first ten minutes: dial, jaw and the non-contact detector
Start with the dial. The listing says the dial is lighted and the meter auto-ranges. Auto-ranging means you select the function and the meter chooses the range; you do not have to guess whether a circuit is 20 A or 200 A before you clamp it. That is convenient, but it also means the first reading can take a moment to settle while the meter hunts for the right range. Give it that moment before you write the number down.
The jaw houses the non-contact voltage detector. The listing states it is integrated into the clamp jaw with audible and visual indicators that intensify near the voltage source. That is a proximity indicator, not a measurement. It tells you a conductor is live; it does not tell you the voltage, and it does not replace a proper test on a known source. In the first hour, use it to confirm the jaw is near the right cable, then use the voltage function to get the actual number.
The listing also mentions an integrated lead holder and a mount for an optional magnetic attachment. The lead holder keeps the test leads tidy when you are working one-handed. The magnetic mount is optional, which means it is not in the box; if you plan to hang the meter on a panel, budget for the accessory separately. The listing does not name the accessory or its fitting, so check that before you order.
Getting a reading you can believe on DC current
DC current is where clamp meters earn or lose trust. The CL710 is listed as a 600A AC/DC clamp meter, so the jaw is intended for DC as well as AC. The listing does not publish a DC accuracy figure or a resolution figure, so you cannot compare it on paper to a bench meter. What you can do is follow a routine that exposes a bad reading.
First, zero the jaw. With DC, the clamp is measuring a magnetic field, and any residual magnetism in the jaw or any offset in the sensor shows up as a small current with nothing in the jaw. The listing includes a relative mode, which is the function you use to null that offset: clamp with the jaw empty, press relative, and the display should read zero. Then clamp the conductor. If the reading drifts after you move the meter, the zero was not stable, and you should repeat it.
Second, check the jaw is fully closed and centred. A clamp meter reads the field around the conductor; a partly closed jaw or a conductor sitting against one side of the jaw gives a low or uneven reading. The listing does not publish a jaw opening dimension, so you will only find out by trying it on the cable you actually use. Third, compare AC and DC if the circuit allows. A True RMS AC reading and a DC reading on the same load should be consistent with the circuit topology; a large unexplained gap is a reason to stop and check the setup, not to trust the number.
Voltage, resistance and the functions you will use less often
The listing covers voltage, resistance, continuity, frequency and capacitance. In a first hour, voltage and continuity get the most use. Voltage is straightforward: the meter auto-ranges, and the display is described as clear in any light. Continuity is the function that tells you whether a connection is intact; the listing does not publish a continuity threshold or a beeper specification, so treat the beep as a go/no-go indicator rather than a resistance measurement.
Frequency and capacitance are the functions that sit unused on many meters until a specific job calls for them. Frequency is useful when you are checking a signal or a drive output; capacitance is useful when you are checking a start or run capacitor. The listing does not publish the capacitance range or the frequency range, so you cannot confirm from the page whether the meter covers the capacitor you have in front of you. Check the meter’s own manual before you rely on either function for a pass/fail decision.
Max/Min, data hold and auto power-off are the housekeeping functions. Max/Min captures the highest and lowest readings over a period, which is useful for a load that cycles. Data hold freezes the display so you can write the number down. Auto power-off protects the battery, but the listing does not publish the battery type or the idle time, so you will not know from the page how long it waits or what it takes.
Where the CL710 stops being the right instrument
The CL710 is a general-purpose clamp meter. It is not a power quality analyser, it is not a data logger, and it is not a safety-rated device for every category of installation. The listing does not publish a CAT rating, which is the specification that tells you whether the meter is rated for the transient energy present at a service entrance or a feeder. If you are working on distribution boards or outdoor equipment, that omission matters. The site’s guide to CAT ratings on an electrical meter explains what the rating covers.
If your work is DC motor checks, the 600A range and the True RMS AC/DC functions are the relevant part; the site’s clamp meters for DC motor checks page sets out what to compare. If you need a higher current range, the Klein CL910 on this site is listed at 2000A AC/DC. If you need to record power quality over time, the ETCR8430 is a recorder, not a clamp meter, and the CL710 cannot replace it. The listing also does not publish a temperature function, a low-pass filter or an inrush mode, so do not assume those are present.
The honest boundary is this: the CL710 is a meter for taking a reading at a point in time, with the functions the listing names. It is not an alarm, it is not a logger, and it is not a substitute for a rated instrument on a live service. Where the listing is silent on a specification, treat the gap as a reason to check the manual before the job, not as a reason to assume the feature is there.
The first hour, and the first job
The Klein Tools CL710 is a 600A AC/DC clamp meter with True RMS, a 6.6-foot drop rating, IP40 ingress protection, a transflective display, a lighted dial and integrated non-contact voltage detection. The listing is clear on those points and silent on the jaw opening, the battery type, the CAT rating and the DC accuracy figure. For a first hour, the routine that matters is zeroing the jaw in relative mode, closing it fully on the conductor, and comparing the reading against a second method before you trust it. If those gaps are acceptable for your work, the CL710 is a sensible general-purpose meter. If you need a published CAT rating or a higher current range, look at the alternatives on this site before you buy.
Recommended Tools
Products shown because their documented specifications fit this guide. Price and availability are on Amazon and can change.
Frequently Asked Questions
Does the CL710 measure DC current as well as AC?
Yes. The listing describes it as a 600A AC/DC clamp meter and lists AC/DC current among the measured functions. The listing does not publish a separate DC accuracy figure, so the DC specification is less detailed than the headline suggests.
What does True RMS actually change in a reading?
True RMS means the meter calculates the equivalent heating value of the waveform rather than assuming a sine wave. On a clean sine wave the result is the same as an averaging meter. On a distorted waveform, such as an inverter output or a drive, the True RMS reading is the one that matches the load.
Is the non-contact voltage detector a measurement?
No. The listing describes audible and visual indicators that intensify near the voltage source. That is a proximity indicator. It tells you a conductor is live but not what the voltage is, and it does not replace a proper voltage measurement on a known source.
What is the CAT rating of the CL710?
The listing does not publish a CAT rating. That is a gap a buyer should note before using the meter on service entrances or feeders. The site's guide to CAT ratings explains what the rating covers and why the omission matters.
Can I hang the meter on a panel?
The listing mentions a mount for an optional magnetic attachment. The attachment is optional, so it is not in the box, and the listing does not name the fitting. Check the accessory before you order if hanging the meter is part of your routine.
What is IP40 protection in practice?
IP40 means protection against solid objects over 1 mm and no water protection. The meter is described as surviving a 6.6-foot drop, but the listing does not claim water resistance, so keep it out of rain and wet areas.
Affiliate disclosure: Akermin earns a commission from qualifying Amazon purchases made through links on this page. Our editorial picks are based on documented specifications and owner feedback, not commissions.