Complete Klein Tools CL120 Digital Clamp Meter kit layout featuring the 400A AC auto-ranging meter, a durable black carrying case with orange trim, high-quality red and black test leads, and three AAA batteries. The image showcases the full set of accessories included for professional electrical testing.
Feature infographic for the Klein Tools CL120 clamp meter highlighting its 600V AC/DC voltage range, 400A AC current capacity, and 20M Ohm resistance measurement. The graphic emphasizes the backlit display, 2-meter drop protection, and CAT III 600V safety rating with CE and ETL certifications.
Front view of the Klein Tools CL120 digital clamp meter with the red and black test leads plugged into the bottom terminals. The large orange clamp jaw is shown at the top, and the high-visibility LCD screen is ready for auto-ranging measurements.
Rear view of the CL120 digital clamp meter illustrating the textured grip, the battery compartment secured by a screw, and integrated technical specifications. The back of the orange clamp jaw features engraved safety warnings and the 1.6-inch jaw capacity.
Detailed front shot of the Klein Tools CL120 400A AC clamp meter. The image clearly shows the selection dial for various modes, including NCV (Non-Contact Voltage), AC current, and resistance, as well as the function buttons for range and max value capture.
Close-up of the Klein Tools CL120 being used by an electrician to measure current in an electrical panel. The orange clamp is securely placed around a single black conductor, and the backlit LCD displays a clear reading of 44.0 Amps.
An electrician wearing protective leather gloves uses the CL120 clamp meter and test leads simultaneously to troubleshoot a commercial breaker panel. The backlit display shows $44.0V$, demonstrating the tool's ability to provide clear readings in high-density electrical environments.
Action shot showing the CL120 clamp meter measuring current on a red conductor within a service panel. The technician holds the meter firmly while the backlit display indicates a reading of $2.0$ Amps, highlighting the tool's precision for low-current diagnostics.
The Klein Tools CL120 digital clamp meter being used to test voltage across circuit breakers. One hand probes the terminals with a red test lead while the meter is held in the other, showing the $44.0V$ reading on the high-contrast backlit display.
The CL120 clamp meter used to measure current flow through an orange extension cord plugged into a heavy-duty adapter. The technician monitors the display, which shows 13.47 Amps, demonstrating the meter's utility for checking load requirements on standard power equipment.
An electrician wearing a hard hat, safety glasses, and protective leather work gloves uses the Klein Tools CL120 Digital Clamp Meter to measure AC current in a residential breaker panel. The meter's orange clamp is securely looped around a main conductor, and the backlit LCD screen clearly displays a measurement of 44.0 Amps, demonstrating the tool's effectiveness for live circuit diagnostics.
Klein Tools Clamp Meter Family promotional how to video
Complete Klein Tools CL120 Digital Clamp Meter kit layout featuring the 400A AC auto-ranging meter, a durable black carrying case with orange trim, high-quality red and black test leads, and three AAA batteries. The image showcases the full set of accessories included for professional electrical testing.
Feature infographic for the Klein Tools CL120 clamp meter highlighting its 600V AC/DC voltage range, 400A AC current capacity, and 20M Ohm resistance measurement. The graphic emphasizes the backlit display, 2-meter drop protection, and CAT III 600V safety rating with CE and ETL certifications.
Front view of the Klein Tools CL120 digital clamp meter with the red and black test leads plugged into the bottom terminals. The large orange clamp jaw is shown at the top, and the high-visibility LCD screen is ready for auto-ranging measurements.
Rear view of the CL120 digital clamp meter illustrating the textured grip, the battery compartment secured by a screw, and integrated technical specifications. The back of the orange clamp jaw features engraved safety warnings and the 1.6-inch jaw capacity.
Detailed front shot of the Klein Tools CL120 400A AC clamp meter. The image clearly shows the selection dial for various modes, including NCV (Non-Contact Voltage), AC current, and resistance, as well as the function buttons for range and max value capture.
Close-up of the Klein Tools CL120 being used by an electrician to measure current in an electrical panel. The orange clamp is securely placed around a single black conductor, and the backlit LCD displays a clear reading of 44.0 Amps.
An electrician wearing protective leather gloves uses the CL120 clamp meter and test leads simultaneously to troubleshoot a commercial breaker panel. The backlit display shows $44.0V$, demonstrating the tool's ability to provide clear readings in high-density electrical environments.
Action shot showing the CL120 clamp meter measuring current on a red conductor within a service panel. The technician holds the meter firmly while the backlit display indicates a reading of $2.0$ Amps, highlighting the tool's precision for low-current diagnostics.
The Klein Tools CL120 digital clamp meter being used to test voltage across circuit breakers. One hand probes the terminals with a red test lead while the meter is held in the other, showing the $44.0V$ reading on the high-contrast backlit display.
The CL120 clamp meter used to measure current flow through an orange extension cord plugged into a heavy-duty adapter. The technician monitors the display, which shows 13.47 Amps, demonstrating the meter's utility for checking load requirements on standard power equipment.
An electrician wearing a hard hat, safety glasses, and protective leather work gloves uses the Klein Tools CL120 Digital Clamp Meter to measure AC current in a residential breaker panel. The meter's orange clamp is securely looped around a main conductor, and the backlit LCD screen clearly displays a measurement of 44.0 Amps, demonstrating the tool's effectiveness for live circuit diagnostics.
Klein Tools Clamp Meter Family promotional how to video
1 Top Tools

Klein Tools CL120 Digital Clamp Meter 400A AC Auto-Ranging Electrical Tester with Integrated Non-Contact Voltage Tester Backlit LCD and Test Leads

Only 2 left
SKU: CL120
$64.98 USD

Description

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Professional-Grade Diagnostics: The Electrician’s Choice for Reliable Current and Voltage Testing

The Klein Tools CL120 Digital Clamp Meter is an indispensable tool designed specifically for the rigorous demands of the modern electrician. Engineered from the ground up based on extensive field research, this automatically ranging meter allows you to measure AC current up to 400 Amps and non-contact voltage (NCV) directly through the 1.6-inch clamp jaw. This design not only speeds up your workflow but also increases safety by allowing you to verify live circuits without direct wire contact. Whether you are troubleshooting residential panels or light-industrial machinery, the CL120 provides the precision you need with the durability you expect from a brand like Klein Tools.

Beyond current measurement, this multifunction device excels at measuring AC/DC voltage, resistance, and continuity through the included high-quality test leads. The backlit LCD display ensures that readings are easily legible even in dimly lit electrical closets or crawl spaces. Built for the real world, the CL120 features a 6.6-foot drop protection rating and a CAT III 600V safety certification. With time-saving features like Data Hold and Max Value capture, this meter is a versatile workhorse that belongs in every professional tool bag.

Key Features

  • Versatile Measurement: Accurately measures AC current, AC/DC voltage, resistance, and continuity.
  • Integrated NCVT: Non-contact voltage tester built directly into the clamp jaw for quick safety checks.
  • Auto-Ranging Precision: Automatically selects the correct measurement range for faster, more accurate results.
  • Enhanced Visibility: 2000-count backlit LCD display for ease of viewing in low-light environments.
  • Rugged Durability: Built to withstand a 6.6-foot (2 m) drop on the job site.
  • Safety First: CAT III 600V, Class 2, Double insulation safety rating.
  • Efficiency Features: Includes Data Hold, Max value capture, and 10-minute Auto-Power Off to conserve battery.

What's Included

  • (1) CL120 Digital Clamp Meter
  • (1) Set of Test Leads with CAT III/CAT IV Safety Caps
  • (1) Soft Carrying Case
  • (3) AAA Batteries
  • (1) Instruction Manual

Specifications

Type Auto-Ranging Clamp Meter
AC Current 400 Amps
Voltage Range 600V AC/DC
Resistance (Ohms) 20MΩ
Safety Rating CAT III 600V, Class 2, Double Insulation
Jaw Size 1.6 Inches
Drop Protection 6.6 Feet
Display Type 2000 Count Backlit LCD
Overall Length 8.45 Inches
Overall Width 3.5 Inches
Overall Height 1.5 Inches
Weight 1.32 lbs (with batteries)

Pro-Tip: When measuring current with the clamp jaw, always ensure you are clamping around only one conductor. Clamping both the "hot" and "neutral" wires simultaneously will cause the fields to cancel each other out, resulting in a false zero reading.