HIOKI CM4001 Earth Leakage Clamp Meter | AC Leakage Tester

The HIOKI CM4001 AC leakage clamp meter is designed for detecting earth leakage and ground fault current in electrical distribution systems without interrupting the circuit. With a 0.1 mA resolution and True RMS measurement technology, it accurately captures leakage current even on distorted or non-sinusoidal waveforms — common in installations with variable speed drives, inverters, and switching power supplies.

The 40 mm jaw accepts single-core and multi-core cables, and the peak hold function captures transient leakage events that might otherwise be missed. The CM4001 is compatible with the optional HIOKI Z3210 Wireless Adapter for Bluetooth® data transfer to GENNECT Cross, enabling wireless report generation directly from the test site.

Key Features of the HIOKI CM4001

• Detects earth leakage and ground fault current without interrupting the circuit
• True RMS engine gives accurate readings on distorted waveforms from inverters and VSDs
• Peak hold captures transient leakage spikes that might otherwise be missed
• Slim jaw profile fits comfortably around cables in congested switchboard environments
• Optional Z3210 Bluetooth adapter enables wireless report generation from the test site

HIOKI Test Equipment from Hinco Instruments

HIOKI instruments are available from Hinco Instruments, Western Australia’s specialist supplier of test and measurement equipment. Our engineering team can assist with product selection, application guidance, and calibration services to support accurate and reliable AC leakage current measurement across mining, industrial, and electrical engineering applications throughout Perth and regional WA. Contact us for pricing and availability.