10 Best Clamp Multimeters 2025 in the United States

The AstroAI Inrush Digital Clamp Meter Multimeter stands out for its versatility and accurate measurements. With a current measurement range of up to 1000 A for both AC and DC, and voltage measurement capabilities up to 1000 V DC/750 V AC, it is well-suited for a variety of tasks including industrial electrical testing, high-power equipment maintenance, and solar PV projects. The inclusion of inrush current measurement is particularly helpful for diagnosing startup issues in motors, although it is limited to AC current only. This might be a drawback if you need to test DC inrush current specifically.

The VFD and LoZ modes enhance its accuracy in measuring currents and voltages on variable frequency drives and eliminate ghost voltages, respectively, which can be highly beneficial in complex electrical environments. Additional functions like temperature, resistance, capacitance, frequency, continuity, and NCV detection further expand its usability. The NCV feature adds a layer of safety by allowing voltage testing without physical contact. The device is thoughtfully designed with a backlit LCD and flashlight, improving readability in low-light conditions.

Data hold, max/min, auto/manual ranging selection, and REL/ZERO functions enhance its convenience and ease of use. It complies with high safety standards (IEC 61010-1, CAT IV 600V, CAT III 1000V), making it reliable for professional use. This multimeter is lightweight, making it portable and easy to handle during fieldwork.

The AstroAI Digital Clamp Meter offers a solid set of features for both household and light industrial electrical tasks. It can measure AC/DC current and voltage, resistance, capacitance, frequency, and more, making it quite versatile. The inclusion of non-contact voltage detection with audible and visual alerts is a handy safety feature, helping users identify live wires without direct contact. Its display is backlit with a flashlight, which is useful for working in dim conditions, and additional functions like data hold, max/min readings, and auto power off add convenience and help conserve battery life.

The jaw opening is designed to fit around single wires easily, allowing safe current measurement without interrupting circuits, although it is not suitable for clamping whole cords for current. Safety-wise, it meets the overvoltage category III 600V standard, which is suitable for most residential and commercial applications. The device uses 2 AAA batteries, which may require frequent replacement compared to rechargeable options.

It is a dependable clamp meter for general electrical troubleshooting and maintenance, especially if you want a tool that balances ease of use with a variety of measurement functions.

The Fluke 902 FC HVAC True-RMS Clamp Meter is designed with HVAC technicians in mind, offering specialized features that make it a strong tool for that category. It supports DC current measurements up to 200 amps, which is especially useful for tasks like measuring flame rods. Its extended resistance range up to 60k ohms allows you to test thermistors, which is helpful in HVAC work. The meter can also capture flue gas temperature, adding to its versatility. One standout feature is its True-RMS capability, ensuring accurate readings even on tricky, non-linear electrical signals. The meter connects wirelessly via Bluetooth to your phone, which helps save time and enhances safety by letting you monitor readings remotely. It is battery powered with two AA batteries and is relatively lightweight and portable.

The Fluke brand is well-known for reliability, making this clamp meter particularly suitable for HVAC professionals needing precise current, resistance, and temperature measurements in their fieldwork. Its wireless capability and True-RMS measurements provide a modern, convenient edge.

Users seeking a clamp meter for broader electrical work beyond HVAC might find its specialized functions less useful. Additionally, for general electrical use or heavy industrial testing, some specific features may not fully meet all requirements.