Klein Tools CL490 400A/600V AC/DC Dual-Display Auto-Ranging Digital Clamp Meter

Klein Tools CL490 400A/600V AC/DC Dual-Display Auto-Ranging Digital Clamp Meter

The Klein Tools CL490 is an auto-ranging digital clamp meter built for electricians, technicians, and maintenance professionals who need fast, reliable AC/DC measurements in the field. This clamp meter is rated for AC/DC current up to 400A and voltage up to 600V, covering a wide range of residential, commercial, and industrial electrical testing tasks. The dual-display design shows two measurement values at the same time, so users can monitor current and voltage together without toggling between functions. Combined with auto-ranging operation, the Klein Tools CL490 automatically selects the correct measurement range for each test, reducing setup steps and helping technicians work more efficiently on the job site.

Key Features

• Amperage Rating: Measures AC/DC current up to 400A, giving technicians the range needed to test higher-current branch circuits and equipment feeders with confidence.
• Voltage Rating: Rated up to 600V for AC/DC voltage testing, supporting a wide variety of electrical systems found in residential, commercial, and industrial settings.
• Dual-Display Readout: Displays two measurement values simultaneously, allowing users to view current and voltage readings together for faster, more efficient troubleshooting.
• Auto-Ranging Operation: Automatically selects the correct measurement range for each test, eliminating manual range switching and helping reduce setup time and user error.
• Clamp Meter Design: Non-contact clamp jaw lets technicians measure current without breaking or de-energizing the circuit, supporting safer testing procedures.
• AC/DC Measurement: Reads both AC and DC current and voltage from a single meter, reducing the number of tools needed on the truck or in the toolbox.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Electrical Troubleshooting and Diagnostics
• Commercial and Industrial Electrical Systems
• Residential Electrical Maintenance and Repair
• AC/DC Current and Voltage Verification
• Panelboard and Circuit Testing

Why Klein Tools?

Klein Tools designed the CL490 clamp meter to give electrical professionals a dependable, accurate tool for everyday testing and troubleshooting. With AC/DC measurement up to 400A and 600V, a dual-display readout, and auto-ranging operation, the CL490 is built to keep pace with demanding job site conditions. Klein Tools is a trusted name in professional electrical test instruments, and the CL490 reflects that same commitment to rugged, reliable performance for electricians and technicians who depend on their tools every day.