Klein Tools Digital Clamp Meter AC Auto-Ranging 400 Amp TRMS Temperature NCVT 600V
Professional-Grade True RMS Clamp Meter with Temperature Measurement
The Klein Tools Digital Clamp Meter delivers professional-grade electrical measurement performance for comprehensive AC current testing and temperature monitoring. This True RMS clamp meter features auto-ranging technology and integrated NCVT designed for electricians, linemen, and electrical professionals, providing the reliable performance and industry-leading quality that tradesmen demand from America's most trusted tool manufacturer.
Professional Features & Benefits
Advanced Measurement Technology
- True RMS Auto-Ranging - Delivers accurate measurements on non-linear loads with Klein's precision engineering for professional electrical diagnostics
- 400 Amp AC Current Capacity - Handles high-amperage applications with 1.6-inch jaw opening for large conductors and cable bundles
- Integrated NCVT Detection - Non-contact voltage testing built into clamp jaw provides safe voltage detection without test lead contact
- K-Type Thermocouple Temperature - Measures -40° to 1832°F temperature range for comprehensive HVAC and electrical system diagnostics
Safety and Durability Standards
- CAT III 600V Safety Rating - Class 2 double insulation protection meets rigorous safety standards for electrical work environments
- 6.6-Foot Drop Protection - Rugged ABS construction withstands jobsite impacts and harsh working conditions with Klein quality durability
- Backlit LCD Display - 2000-count display with backlighting ensures clear readings in low-light electrical panels and confined spaces
Professional Convenience Features
- Auto Power-Off Function - 10-minute automatic shutdown conserves battery life during extended troubleshooting sessions
- Data Hold and Max Value - Captures and holds readings for documentation and analysis of electrical system performance
- Complete Professional Kit - Includes carrying case, test leads with safety caps, thermocouple probe, and batteries for immediate field use
Technical Specifications
Measures 400A AC current, 600V AC/DC voltage, 20 MΩ resistance, continuity, and temperature -40° to 1832°F. Overall dimensions 8.45" length x 3.51" width x 1.51" height, weighing 0.61 lbs. Features 1.6" jaw capacity, 2000-count backlit LCD display, powered by 3 AAA batteries with low battery indicator and auto power-off.
Installation & Usage
- Verify meter operation by testing known voltage source before each use following Klein Tools safety protocols
- Select appropriate measurement function using rotary switch for current, voltage, resistance, or temperature testing
- For current measurement, open clamp jaw and position around single conductor ensuring complete jaw closure
- Use NCVT function by positioning clamp near energized conductors for non-contact voltage detection
- Connect test leads to meter and circuit points for voltage, resistance, and continuity measurements
- Attach K-type thermocouple for temperature measurements in HVAC and electrical equipment diagnostics
Professional Applications
Ideal for:
- Electrical Installation - Current measurement and load analysis in residential, commercial, and industrial electrical systems
- Motor and Equipment Testing - Troubleshooting motor current draw, compressor amperage, and electrical equipment performance
- Panel and Circuit Analysis - Branch circuit loading, main service current monitoring, and electrical system diagnostics
- HVAC System Diagnostics - Temperature measurement and electrical testing of heating, cooling, and ventilation equipment
- Industrial Maintenance - Preventive maintenance current monitoring and temperature analysis of industrial electrical systems
- Telecommunications Work - Current measurement and voltage testing in communication and data system installations
- Automotive Electrical - Battery, alternator, and electrical system testing with temperature monitoring capabilities
- Solar and Renewable Energy - DC voltage measurement and current monitoring in photovoltaic and alternative energy systems
True RMS Technology Advantage
Klein Tools True RMS measurement technology provides accurate readings on non-linear loads including variable frequency drives, electronic ballasts, and switching power supplies. This advanced measurement capability ensures precise diagnostics on modern electrical systems with distorted waveforms, delivering the accuracy electrical professionals require for proper system analysis and troubleshooting.
Why Choose Klein Tools Quality?
Since 1857, Klein Tools has maintained America's legacy of excellence in electrical tool manufacturing, combining precision engineering with rigorous safety testing protocols. This digital clamp meter represents Klein's commitment to professional-grade reliability, featuring robust construction, accurate measurement technology, and comprehensive safety certifications trusted by electricians and electrical professionals nationwide for critical electrical system diagnostics.
KLN-CL220 - spec sheet
Manufacturer Resources
Product Specs
- Ac Voltage:
- 600 V
- Application:
- Measures AC Current and NCVT via Clamp and AC/DC Voltage, Resistance, and Continuity via Test-leads, and Temperature with Thermocouple
- Auto Power Off:
- Yes
- Batteries:
- 3 x AAA
- Current:
- 400 A AC
- Dc Polarity Indicator:
- Yes
- Dc Voltage:
- 600 V
- Depth:
- 8.4500 in
- Display:
- 2000 Count Backlit LCD
- Drop Protection:
- 6.6' (2 m)
- Height:
- 1.5060 in
- Included:
- Digital Clamp Meter; Carrying Case; Instructions; Test Leads; Thermocouple; Batteries
- Jaw Size:
- 1.6" (4.1 cm)
- Material:
- ABS/Electronics
- Ohms Resistance:
- 20 MΩ
- Overall Height:
- 1.5" (3.8 cm)
- Overall Length:
- 8.45" (21.5 cm)
- Overall Width:
- 3.5" (8.9 cm)
- Standard:
- CATIII 600V, Class 2, Double Insulation Safety Rating, CE Certified
- Temperature Range:
- -40° - 1832°F (-40° - 1000°C)
- Weight:
- 0.6130 lbs
- Width:
- 3.5120 in
- Category:
- Clamp Meters
- Product Type:
- Auto Ranging TRMS Clamp with Temperature
- Department:
- Electrical
- Product Group:
- Test & Measurement
- Product Subgroup:
- Environmental Meters
- Product Voltage:
- 600 V AC/DC
- Product Function:
- TRMS, AC Current, NCVT, AC/DC Voltage, Resistance, Continuity and Temperature
- Product Details:
- Auto Ranging TRMS Clamp with Temperature