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 Clamp Meter CL120 400A AC Auto Ranging Multimeter (600V AC DC Tester 20M Ohm Backlit LCD 1.6 Inch Jaw Circuit Diagnostics Test Leads)

Only 2 left
SKU: CL120
$64.98 USD

Description

Klein promotional logo logout

Verify Alternate Current Amperage and Trace Live Circuit Nodes Instantly with Heavy Duty Non Contact Clamp Detection

The Klein Tools CL120 is an automatically ranging digital clamp multimeter engineered for direct diagnostic verification of current up to 400A AC and line potential up to 600V AC/DC. This field test instrument tracks structural load consumption profiles across residential and light industrial environments without opening structural conductor pathways. Operating within a certified CAT III 600V safety envelope, the device integrates an interior jaw-mounted non-contact voltage sensor alongside a 20MΩ resistance track to execute complete branch monitoring and continuity audits inside dark mechanical closets.

Best Used For:

  • Blower Motor Audits: Clamping the spring jaw assembly over unshielded HVAC fan power supply lines to measure active operational alternate current draw.
  • Junction Box Sweeps: Running the integrated induction sensing head along bundled branch circuit runs to isolate live conductors without exposed wire contact.
  • Control Loop Diagnostics: Utilizing the premium test lead set to verify low-voltage transformer outputs, relay switches, and micro-terminal pathway resistance.

Key Performance & Safety Features

  • Auto-Ranging Processing Core: Automated scale tracking microcircuits select optimal parameters matching active line metrics to ensure quick readings.
  • Jaw-Embedded Safety Sensor: Non-contact alternate current voltage tracing block inside the 1.6-inch jaw performs instant pre-test panel checks.
  • Illuminated Data Interface: Clear 2000-count backlit LCD screen displays high-contrast characters to bypass physical lighting barriers in tight staging areas.
  • Double-Insulated Framework: Hardened impact casing passes structural jobsite validation drop test protocols on solid concrete surfaces from up to 6.6 feet.
  • Automated Power Management: Integrated firmware triggers a complete safety shutdown after ten minutes of inactivity to defend internal battery cell health.

What's Included

  • CL120 Digital Clamp Meter
  • Set of Test Leads with CAT III/CAT IV Safety Caps
  • Soft Carrying Case
  • Three AAA Alkaline Batteries
  • Instruction Manual

Technical Specifications

Diagnostic Instrument Type: Auto-Ranging Clamp Meter Multimeter
Maximum Alternating Current: 400 Amps AC
Voltage Measurement Bounds: 600V AC / 600V DC
Maximum Circuit Resistance: 20MΩ
Industrial Safety Certification: CAT III 600V, Class 2 Double Insulation
Clamp Jaw Opening Span: 1.6 Inches
Chassis Drop Protection: 6.6 Feet (2 Meters)
Display Interface Profile: 2000 Count Backlit LCD Screen
Power Source Requirements: 3 x AAA Batteries (Included)
Tester Chassis Length: 8.45 Inches
Tester Chassis Width: 3.5 Inches
Tester Chassis Height: 1.5 Inches
Total Operational Net Weight: 1.32 lbs. (21.1 oz.)
Pro-Tip: When capturing active lines with your hook assembly, lock only one single conductor inside the 1.6-inch tracking jaw; running grouped multi-wire utility ropes cancels out magnetic line patterns and outputs a false zero reading.