10 Best Clamp Meters 2025 in the United States

The AstroAI Digital Clamp Meter is a versatile and user-friendly tool designed for both household and industrial electrical tasks. It measures AC and DC current and voltage, along with resistance, capacitance, frequency, and more, making it useful for a wide range of troubleshooting and testing needs. Its True RMS capability ensures more accurate readings, especially in environments with complex electrical signals. The jaw opening is slim and compact, allowing it to fit comfortably around conductors in tight spaces. The meter features a clear backlit LCD screen and a built-in flashlight, improving readability in dimly lit areas.

Non-contact voltage detection with audible and visual alerts adds a layer of safety and convenience when checking for live wires without touching them. It also includes useful extras like data hold, max/min recording, and auto power-off to save battery life. Safety-wise, it meets overvoltage category III 600V standards and pollution degree 2, making it reasonably safe for most common electrical environments. However, it requires 2 AAA batteries, which may need frequent replacement depending on use.

While it offers a broad range of measurements, users must remember to clamp only around single conductors for current readings and avoid measuring voltage by clamping. This meter’s combination of features, ease of use, and safety certifications make it a solid choice for DIYers, electricians, and technicians who need a dependable and affordable clamp meter for everyday electrical testing.

The AstroAI Digital Clamp Meter is a versatile tool designed to address both industrial and household electrical issues. It effectively measures AC current, AC/DC voltage, resistance, capacitance, diode continuity, and performs live wire tests. However, it's important to note that it does not measure DC current, which could be a limitation for some users.

The device has a large jaw opening, allowing for easy measurement of AC current without interrupting the circuit, and its compact size makes it suitable for use in tight spaces. With features like data hold, max/min readings, auto shut-off, low battery indicator, and continuity buzzer, it offers convenience and ease of use. The LCD backlit screen and built-in flashlight enhance its usability in low-light conditions.

Additionally, the non-contact voltage testing feature with sound and light alarms adds a layer of safety, making it user-friendly. The clamp meter complies with environmental pollution degree 2 and overvoltage category III 600V safety standards, ensuring it meets necessary safety requirements. While the device is battery-powered, the inclusion of two AAA batteries in the package is a thoughtful touch. In summary, the AstroAI Digital Clamp Meter is a solid choice for those needing a reliable tool for various electrical measurements. Its inability to measure DC current is a notable drawback, but its range of other features and safety ratings make it a valuable addition to any toolkit.

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.