Hioki CM4371-50 AC/DC Clamp Meter

The Hioki CM4371-50 combines precision, durability, and connectivity for professional field and panel testing. At its core, it measures AC and DC currents up to 600 A, with True RMS accuracy, allowing it to handle asymmetric waveforms and variable loads reliably. It can also measure voltages up to 1000 V DC or AC in standard use, and when used with the optional P2010 DC High-Voltage Probe, it supports up to 2000 V DC, making it suitable for high-voltage inspections like those required in solar PV systems.

Safety is built in: the instrument carries CAT IV 600 V / CAT III 1000 V ratings, ensuring protection in high-risk environments. The plastic and hardware are rugged, with strong jaws and robust construction so it can handle rough use. Through Hioki’s Wireless Adapter Z3210 and the GENNECT Cross mobile app, the meter can transmit measurements to smartphones/tablets. This enables real-time logging, harmonic analysis (1st to 30th order), and streamlined reporting, which is great for reducing manual data entry and improving accuracy.

Other useful features include automatic AC/DC current detection, inrush/crest current measurement (helpful for motors or loads starting up), a variety of DMM functions (resistance, continuity, diode testing), backlight, auto-hold, pass/fail functions, and convenient test leads with safety sleeves and caps. Lightweight enough for field work, with long battery life, the CM4371-50 is well suited for electrical troubleshooting, solar inspections, maintenance, and other demanding applications.

Features

• 600 A AC/DC True RMS current measurement for both alternating and direct currents.
• Voltage capability up to 1000 V, extended to 2000 V DC using optional probe (P2010).
• High safety ratings: CAT IV 600 V / CAT III 1000 V.
• Wireless communication via adapter Z3210 + GENNECT Cross app for data transfer and harmonic analysis.
• Inrush & crest current detection, useful for capturing motor start spikes or other transients.
• DMM functions included: voltage (AC/DC), resistance, continuity, diode check, and more.
• Harmonic analysis up to 30th order when using the app.
• Automatic AC/DC detection simplifies operation and reduces risk of incorrect mode.
• Strong jaw design and rugged build for reliability in tough conditions.
• Convenient test accessories included: test leads, protective cases, good battery life.

Includes

• Test Lead L9300
• Carrying Case C0203
• LR03 Alkaline battery ×2
• Instruction Manual×2
• Operating Precautions ×1