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  1. Home
  2. Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
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  2. Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320

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Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 2 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 3 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 4 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 5 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 6 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 7 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 8 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 9 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 10 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 11 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 12 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 13 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320
View 14 of Klein CL320 Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320

Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320

SKU: 960942
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$ 99 .98 / ea
$ 137 .38 / ea
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Product Details

Manufacturer: Klein
Product: Clamp Meter
Material: ABS
Trade Tool Type: HVAC
Use: Residential & Commercial
  Industrial
Battery Included: Yes
Battery Type: AAA
Electrical Voltage: 600 Volt
Amperage: 400 A
Length: 8-7/16"
Width: 3-1/2"
Height: 1-1/2"
Other Info: LCD Screen
  CE Certified
Mpn # CL320
Weight 1.00 lbs.

About the Klein CL320

About the Klein 600V Auto-Ranging HVAC Digital Clamp Meter for AC Current and NCVT, 400 Amp - CL320

The Klein CL320 600V auto-ranging HVAC digital clamp meter is purpose-built for HVAC professionals and technicians who need precise, reliable measurements in the field. Designed with real-world challenges in mind, this meter offers a powerful combination of features to handle complex electrical diagnostics with ease. The clamp measures AC current and non-contact voltage (NCVT) directly, while the test leads allow you to measure AC/DC voltage, resistance, frequency, DC microamps, capacitance, duty cycle, diode function, continuity, and temperature using the included K-Type thermocouple. Whether you're troubleshooting HVAC systems or performing detailed electrical work, this digital clamp meter gives you the accuracy and range to get it done right.


Equipped with true RMS auto-ranging technology, the CL320 delivers accurate readings regardless of waveform, and the backlit LCD screen ensures you can read data clearly—even in dim or cramped spaces. Features like auto-range, data hold, and max/min value tracking simplify complex measurements, while the built-in test lead holder and compatibility with optional magnetic hangers make hands-free operation a breeze. Rugged enough to withstand drops of up to 6.6 feet (2 meters) and rated CAT III 600V with double insulation, it’s engineered for both safety and durability in residential, office, and light-industrial environments.


With everything you need—test leads (with CAT III/CAT IV safety caps), thermocouple, carrying case, batteries, and clear instructions—the Klein CL320 is ready to support your work right out of the box. Whether you're maintaining HVAC units or tackling general electrical jobs, this meter helps you work faster, safer, and more efficiently.


Trusted by pros, built to last—Klein Tools delivers unmatched quality and rugged reliability. Whether you're tackling a tough jobsite or fine-tuning detailed electrical work, Klein’s precision-engineered electrical tools and specialty hand tools are up for the challenge. Discover the full lineup today at PlumbersStock and gear up with the best.

Product Videos

Klein Tools Clamp Meter Family

Klein Tools Clamp Meter Family

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Product Features

  • Built for HVAC Pros: Designed specifically for HVAC diagnostics, the Klein CL320 digital clamp meter handles AC current, DC microamps, frequency, capacitance, duty cycle, and more—all in one tool.
  • Accurate in Any Environment: Equipped with True RMS auto-ranging, this clamp meter ensures precise measurements, even on irregular waveforms, making it ideal for modern, variable-speed HVAC systems.
  • Comprehensive Testing Capabilities: This digital clamp meter measures voltage, resistance, continuity, and temperature with the included K-Type thermocouple, making it perfect for pinpointing performance issues.
  • Work Smarter, Hands-Free: With a built-in test lead holder and support for magnetic hangers, this clamp meter allows you to focus on connections and readings, not on juggling your tools.
  • Clear Readings in Tough Spots: Designed with a backlit LCD screen with Max/Min and Data Hold functions, this clamp meter keeps your readings visible and easy to track in dark or confined workspaces.
  • Durable, Safe, and Ready to Go: Drop-tested to 6.6 feet and CAT III 600V rated with double insulation, this meter is rugged enough for the job site and safe for serious work.

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