Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp

The Klein Tools CL390 AC/DC Digital Clamp Meter is a versatile, auto-ranging device designed to deliver accurate measurements for professionals working with electrical systems. This True Root Mean Squared (TRMS) clamp meter measures AC/DC current, voltage, DC microamps, resistance, continuity, frequency, capacitance, diodes, and temperature via a thermocouple probe. With its high-visibility reverse contrast LCD display, this meter is built for optimal readability in any lighting condition, making it a reliable tool for electricians, HVAC technicians, and other trade professionals who work in both bright and dim environments. The built-in non-contact voltage tester (NCVT) within the clamp ensures safety and convenience, reducing the need for additional tools during diagnostics.

Engineered for durability, the CL390 clamp meter can withstand a 6.6-foot drop and has a convenient test lead holder for hands-free operation. Whether you’re working in residential, office, or light-industrial environments, this meter provides a comprehensive solution for electrical testing needs. Its auto-ranging TRMS technology ensures precise readings, and the auto-power off feature extends battery life during long working hours. It includes a carrying case, test leads, a thermocouple, and three AAA batteries, ensuring that you’re ready for the job right out of the box

Klein Auto-Ranging 400 Amp At a Glance

• True Root Mean Squared (TRMS) measurement: Delivers accurate readings of AC/DC current.
• High-visibility reverse contrast LCD display: Enhances readability in both dark and bright environments.
• Non-contact voltage tester (NCVT): Built into the clamp for quick voltage checks.
• Durable construction: Withstands drops from up to 6.6 feet (2 meters), ideal for tough job sites.
• Auto-ranging function: Automatically adjusts to the proper range for efficient testing.
• Multi-function testing: Measures AC/DC current, voltage, resistance, frequency, capacitance, continuity, diodes, and temperature.

Markets

• Electricians: For quick and accurate AC/DC current and voltage diagnostics.
• HVAC Technicians: Temperature and continuity testing ensure efficient HVAC system performance.
• Maintenance Workers: Reliable tool for troubleshooting electrical systems in commercial buildings.
• Construction Workers: Durable and versatile for use in demanding job site conditions.
• Automotive Technicians: Ideal for testing electrical systems and temperature in vehicles.
• Facility Managers: Useful for monitoring electrical performance in industrial settings.
• Municipal Workers: Safe and compliant for testing electrical systems in public infrastructure.

Professionals across several industries will appreciate the CL390’s robust feature set. From electricians needing precise AC/DC current measurements to HVAC technicians troubleshooting system performance, this meter simplifies complex testing. It is also ideal for technicians in commercial environments who require fast, accurate data on voltage and resistance, while the temperature probe is essential for applications that involve monitoring thermal changes.

Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Features

• Test lead holder on side of clamp and optional magnetic hanger for meter (Cat. Nos. 69445 or 69417) for hands free operation
• Non-contact voltage tester integrated into the clamp jaw
• High-visibility reverse contrast LCD display for improved view ability in all ambient lighting conditions
• Automatically ranging True Root Mean Squared (TRMS) measurement technology for accuracy
• Measures AC/DC current and NCVT via clamp
• Measures AC/DC voltage, resistance, frequency, DC microamps, capacitance, duty cycle, diode test, and continuity via test-leads
• Measures temperature with a K-Type thermocouple probe
• Max/Min, Rel/Zero and Data Hold capability
• Auto-power off after 10 minutes to conserve battery life
• Includes a carrying case, test leads with CAT III/CAT IV safety caps, thermocouple, instructions, and 3 x AAA batteries
• Low battery indicator and easily accessible battery compartment
• Built to withstand a 6.6-Foot (2 m) drop
• CAT III 600V, Class 2, Double insulation safety rating
• Meets requirements for use in basic and controlled electromagnetic environments like residential, office and light-industrial locations
• Special Features: Automatically Ranging True Root Mean Squared (TRMS) Measurement Technology for Accuracy; AC/DC Current Measurement; High Visibility Reverse Contrast LCD; NCVT

Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Applications

• Measures both AC/DC current and NCVT via the clamp and AC/DC voltage
• DC microamp current
• Resistance
• Continuity
• Frequency
• Duty-cycle
• Capacitance
• Tests diodes via the test leads
• Temperature with thermocouple

Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Includes

• (1) Clamp Meter CL390
• (1) Carrying Case 69401
• (1) Test Leads 69410
• (1) Thermocouple 69142
• (1) Instructions
• (3) AAA Batteries

Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Specifications

• Type: AC/DC Current TRMS Clamp
• Material: ABS/Electronics
• Batteries: 3 x AAA (included)
• Auto-power off: Yes, after 10 minutes
• Jaw size: 1.6″ (4.1 cm)
• Drop protection: 6.6′ (2 m)
• Display: 4000 Count Reverse Contrast LCD
• Functions: TRMS, AC/DC current, NCVT, AC/DC voltage, resistance, DC microamp, frequency, capacitance, continuity, duty cycle, diode test, temperature
• Voltage: 600 V AC/DC
• Current: 400 A AC/DC
• Capacitance: 4000 µF
• Resistance: 40 MΩ
• Temperature range: -40° to 1832°F (-40° to 1000°C)
• Standards: CAT III 600V, Class 2, CE Certified
• Dimensions: 8.45″ L x 1.5″ H x 3.5″ W (21.5 cm x 3.8 cm x 8.9 cm)
• Weight: 11 oz (314 g)

Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Warranty

• Klein’s 2 Year Limited Warranty

Why Choose the Klein Tools CL390 Clamp Meter?

Professionals choose the Klein Tools CL390 for its accuracy, reliability, and user-friendly design. The auto-ranging TRMS technology ensures that your readings are precise, no matter the complexity of the electrical system. The built-in non-contact voltage tester eliminates the need for additional voltage-testing equipment, streamlining your workflow. Its drop-resistant construction means it’s tough enough for the most challenging environments, while the bright LCD display ensures you can see your readings clearly in all lighting conditions. Whether you’re testing voltage, diagnosing continuity, or measuring temperature, this clamp meter is a trusted tool in any technician’s toolbox.