10 Best Clamp Meters 2026 in the United States

The Fluke 378FC AC/DC TRMS Non-Contact Voltage Wireless Clamp is a solid choice for both professionals and DIY enthusiasts who require reliable and versatile electrical measurement tools. One of its standout features is the FieldSense technology, which allows users to measure voltage and current without needing to make direct contact with live wires. This not only enhances safety but also makes testing quicker and more efficient, especially in potentially hazardous environments. Furthermore, it provides true RMS measurements, ensuring accuracy when dealing with non-linear loads, which is crucial for diagnosing electrical systems accurately.

The clamp's capability to perform complete 3-phase voltage and current tests helps streamline the process, reducing the number of steps needed to gather essential readings. Additionally, the power quality indicator is a valuable feature, alerting users to any issues with the equipment or power line, thus facilitating proactive maintenance.

The display is generally user-friendly, but depending on the lighting conditions, visibility might be an issue for some users, especially in bright sunlight or dim settings. The Fluke 378FC is a feature-rich clamp meter that excels in safety and accuracy, making it suitable for various electrical testing applications.

The Fluke 375 FC True-RMS AC/DC Clamp Meter is a robust tool designed for accurate current and voltage measurements. It measures AC and DC current up to 600 A and voltage up to 1000 V, which suits a wide range of professional applications. The inclusion of True RMS technology ensures precise readings even with non-linear loads, which is beneficial for electrical troubleshooting.

A notable advantage is its compatibility with Fluke Connect, allowing users to connect the meter to a smartphone to read measurements from a safe distance. This reduces the need for extensive personal protective equipment (PPE) and enhances safety. Additionally, results can be recorded directly to the phone and the cloud, simplifying data management.

Another useful feature is the optional iFlex flexible current probe, which extends the measurement capability up to 2500 A AC, making this meter versatile for various tasks. The device is lightweight at 395 grams and comes with a soft carrying case for portability. The meter also boasts high safety ratings (CAT III 1000 V, CAT IV 600 V), ensuring it can be used in demanding environments. While it includes batteries, it may be worth considering the battery life for long-term use. This clamp meter is well-suited for professionals needing precise and safe distant measurements.

The Klein Tools CL810 Pro Digital Clamp Meter is designed to provide precise and reliable measurements for various electrical applications. It supports both AC and DC measurements with a 600A range, making it versatile for different tasks. The True RMS technology ensures accuracy even with complex signals, while the LoZ mode helps in identifying ghost voltage. The jaw opening size is suitable for standard applications, enhancing its practicality for professional use.

The transflective reverse-contrast display and illuminated dial significantly improve readability in low-light conditions, complemented by a built-in worklight for dark spaces. This meter also features non-contact voltage detection, providing additional safety during operations. It includes various functions such as temperature measurement, diode testing, and capacitance, adding to its versatility. The clamp meter comes with a comprehensive package, including CAT III/CAT IV safety caps for enhanced protection, which is essential for safety compliance.

Being battery-powered, users must ensure they have spare AAA batteries on hand. Its robust design with 6.6-foot drop protection and IP40 ingress protection makes it durable for tough environments. At 0.81 pounds, it is lightweight and portable, making it convenient for on-the-go tasks. Although some users might find the additional features like the mount for an optional magnetic attachment less necessary, this clamp meter is ideal for electricians, HVAC technicians, and other professionals who need a reliable and easy-to-read tool for their electrical measurements.