AC/DC Clamp Meter CM4371

AC/DC CLAMP METER
CM4371

True RMS 600 A AC/DC Clamp Meter
for the Toughest Situations

Exclusive Academic Offer

Hioki clamp meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. Model CM4371 is a 600A True RMS clamp meter that features stronger jaws, broader -25℃ to 65℃ operating temperature range and IP54 dustproof and waterproof enclosure to enable professionals to work quickly in tough situations including the development, repair, and maintenance of equipment and devices such as electric vehicles. Additionally, the high-voltage DC measurement capability of up to 1700 V (*1) is ideal for the clamp maintenance inspections of electrical and solar power equipment.

CAT IV 600 V
CAT III 1000 V


Key Features
• Multiple measurement functions
• Automatic AC/DC function helps boost work efficiency
• Measure DC voltages of up to 1700 V (*1)
• Simultaneously measure inrush current in RMS and crest values
• Expanded -25 °C to 65 °C operating temperature range
• IP54 dustproof and waterproof enclosure *Jaws (current sensor portion): IP50



*1 Your instrument can be used to measure voltages in excess of 1000 V DC if and only if both of the following conditions are satisfied: 1. The circuit under measurement is isolated from the commercial power grid. 2. The circuit under measurement is isolated from ground.

Model No. (Order Code)

CM4371
Germany iF Design Award CM4371 series

Key Features


• Multiple measurement functions
• Automatic AC/DC function helps boost work efficiency
• Measure DC voltages of up to 1700 V
• Simultaneously measure inrush current in RMS and crest values
• Expanded -25 °C to 65 °C operating temperature range
• IP54 dustproof and waterproof enclosure *Jaws (current sensor portion): IP50

How to Use the Hioki CM4370 Series Clamp Meters
Current Measurement Function:

Learn how to effectively use the current measurement function with this short video.

How to Use the Hioki CM4370 Series Clamp Meters
Auto Hold Function:

The Auto Hold feature is perfect in situations where the display is hard to read because the clamped wires are in hard to reach locations. With Auto Hold, measured results automatically freeze on the display until the next measurement starts, making testing and record taking a snap.

How to Use the Hioki CM4370 Series Clamp Meters
Max/Min/AVG/Peak Function:

Watch this video to learn how to capture the maximum, minimum, average and peak values of a current signal, available when the AUTO AC/DC mode is not in use.

How to Use the Hioki CM4370 Series Clamp Meters
Simultaneous Display of DC Current and DC Voltage:

The CM4370 Series can measure both DC current and DC voltage with a single device at the same time, making it ideal for automotive battery testing and inspection and maintenance of solar panels.

How to Use the Hioki CM4370 Series Clamp Meters
Inrush Measurement Function:

Accurately measure the startup or inrush current of motors and equipment. The CM4370 series is engineered to detect the full startup current period and then identify the RMS waveform as well as the highest waveform peak.

How to Use the Hioki CM4370 Series Clamp Meters
Voltage Measurement Function:

The DMM function of the AC/DC clamp meter is advanced enough to measure up to 1700V AC/DC. Watch this video to learn more.

How to Use the Hioki CM4370 Series Clamp Meters
Continuity Check Function:

The DMM function of the AC/DC clamp meter also provides a continuity check function. Easily detect short-circuits with the clear buzzer and red LED.

How to Use the Hioki CM4370 Series Clamp Meters
AC Voltage Detection Function

The tip of the current sensor of the CM4370 Series can also detect live voltages, eliminating the need for you to use a separate voltage detector. Energized lines are identified with a loud buzzer and red LED on the clamp meter.