The Klein Tools CL445 HVAC AC/DC Digital Clamp Meter is a high-performance tool engineered specifically for HVAC professionals. This auto-ranging True Root Mean Squared (TRMS) clamp meter provides maximum accuracy in measuring AC current (up to 600 amps), inrush current, and AC/DC voltage. Its robust capabilities extend to measuring DC microamps, resistance, continuity, frequency, capacitance, temperature, diodes, and more. It’s designed to meet the demands of HVAC work, providing a backlit dual display that allows simultaneous viewing of voltage and current. This feature-rich device also comes equipped with a non-contact voltage tester (NCVT) in the clamp jaw, a built-in work light for low-light environments, and dedicated inrush current and DC microamp modes. With right-angle input test leads, alligator clips, and a thermocouple probe included, the CL445 ensures versatility and convenience on the job.
Klein Auto-Ranging 600 Amp At a Glance
- True Root Mean Squared (TRMS) accuracy: Automatically adjusts for precise readings of AC/DC current.
- Simultaneous current and voltage display: Dual backlit LCD for improved efficiency when diagnosing systems.
- Built-in non-contact voltage tester (NCVT): Integrated into the clamp jaw for quick and safe AC voltage detection.
- Durable construction with drop protection: Built to withstand drops from heights of up to 6.6 feet (2 meters).
- Inrush current and DC microamp modes: Capture startup current and low-level DC measurements, critical for HVAC systems.
- Built-in worklight: Illuminates dim areas for easier use in low-light environments.
Markets
- HVAC Technicians: Perfect for measuring inrush current, microamps, and temperature, crucial for diagnosing HVAC system performance.
- Electricians: Provides accurate AC/DC current and voltage readings, necessary for installation and troubleshooting.
- Maintenance Workers: Reliable tool for servicing electrical systems in commercial or industrial environments.
- Automotive Technicians: Ideal for diagnosing electrical components and current draws in vehicles.
- Appliance Repair Technicians: Useful for testing resistance and continuity in electrical components of appliances.
- Facility Managers: Helps monitor and troubleshoot electrical systems in large buildings.
- Municipal Workers: Safe for electrical diagnostics in public infrastructure and industrial applications.
This clamp meter is ideal for HVAC technicians, as it allows for simultaneous current and voltage measurements—crucial for diagnosing and repairing complex systems. The built-in work light is perfect for troubleshooting in dimly lit areas, while the durable construction ensures long-lasting performance even in harsh environments. With a CAT IV 600V and CAT III 750V safety rating, the CL445 is designed to handle demanding electrical applications safely and efficiently.
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Features
- CL445 HVAC Clamp Meter is an automatically ranging true root mean square (TRMS) digital clamp meter
- Digital clamp measures 600 A AC current and inrush current
- Test leads measure 750V AC/600V DC voltage, DC micro amp, resistance, continuity, frequency, duty-cycle, capacitance, and diode tests
- K-Type thermocouple port for measuring temperature from -148 to 1832-Degree Fahrenheit (-100 to 1000-Degree Celsius)
- Detect AC current with non-contact voltage tester integrated into the clamp jaw
- Backlit LCD with dual V + A function allows simultaneous viewing of voltage and current measurements
- Dedicated mode for capturing DC micro amp and inrush current
- Meter has a built-in worklight to illuminate in low light areas
- CAT IV 600V, CAT III 750V, Class 2, Double insulation safety rating
- Includes right-angle input test leads, push-on alligator clips, K-type thermocouple, storage pouch, instruction manual, and 3 x AAA batteries
- Can be used with Magnetic Hanger (Cat. No. 69417, sold separately) for hands free operation
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Applications
- Measures AC Current
- Inrush Current
- AC/DC Voltage
- DC Microamps
- Resistance
- Continuity
- Frequency
- Capacitance
- Temperature
- Diodes
- and More
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Includes
- (1) Clamp Meter
- (1) Right-Angle Input Test Leads
- (1) Push-On Alligator Clips
- (1) K-Type Thermocouple
- (1) Storage Pouch
- (3) AAA Batteries
- Instruction Manual
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp Specifications
- Type: HVAC TRMS Clamp Meter
- Material: ABS/Electronics
- Batteries: 3 x AAA (included)
- Auto-Power Off: Yes, after a period of inactivity
- Jaw Size: 1.25” (3.2 cm)
- Drop Protection: 6.6′ (2 m)
- Display: 6000 Count LCD
- Functions: TRMS, AC current, inrush current, AC/DC voltage, DC microamps, resistance, continuity, frequency, capacitance, temperature, diodes, non-contact voltage testing
- Voltage: 750V AC / 600V DC
- Current: 600 A
- Capacitance: 6.000 mF
- Resistance: 60 MΩ
- Temperature range: -148°F to 1832°F (-100°C to 1000°C)
- Standards: CAT IV 600V, CAT III 750V, Class 2, CE Certified
- Dimensions: 9.24” L x 1.59” H x 3.77” W (23.5 cm x 4 cm x 9.6 cm)
- Weight: 12.5 oz (355 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 CL445 Clamp Meter?
The Klein Tools CL445 is the go-to clamp meter for HVAC professionals who need reliable, precise, and versatile testing equipment. The ability to simultaneously measure current and voltage saves time during diagnostics, while features like the built-in worklight and non-contact voltage tester make it incredibly user-friendly. Built to withstand drops and featuring a durable design, the CL445 is tough enough for any job site, and its high safety ratings ensure reliable use in residential, commercial, and light-industrial environments. Whether you’re troubleshooting an HVAC system, testing electrical circuits, or performing general maintenance, this clamp meter delivers the accuracy and functionality required by today’s professionals.
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