CM4003 (Output and external power supply function)

Prevent unexpected downtime! Identify potential problems and avoid large problems

Key Features • Easily transfer measurement data to your smartphone or tablet by using our free app GENNECT Cross or to an Excel® file. (Wireless Adapter Z3210 is necessary) • Detect minuscule leakage currents with a newly designed sensor. (Core jaw diameter up to φ 40 mm) • Broad measurement range extending from leakage currents to load currents • Complies with the performance standard set forth in IEC/EN 61557-13, an international standard on leak clamp meters • Solve GFCI and RCD problems quickly • Speed up pass/fail judgments with the built-in comparator function • Output function (waveform/RMS): use with a recorder to record waveforms and fluctuations • External power supply: use an optional AC adapter for continuous, long-term measurement CAT III 300 V

Model No. (Order Code)

CM4003 Wireless Adapter Z3210 not included
CM4003-90 Bundled with the Wireless Adapter Z3210

When Z3210 is installed

Connect the Z3210 for wireless communications
Easy visualization of intermittent trip events

Connect the Wireless Adapter Z3210 (sold separately) for wireless communications. You can transfer the readings to your phone or tablet and check the location and time of leakage easily and efficiently.

See details about Wireless Adapter Z3210

Instantly create reports by a free app (GENNECT Cross)

GENNECT Cross, a free app designed specifically for use with Hioki measuring instruments, lets you check and manage measurement results and create reports. The software provides a range of functionality that helps manage data in the field, including photographing measurement sites, placing measurement results on photographs, and saving hand written memos. Optional Wireless Adapter Z3210 is necessary.

Click here for details about GENNECT Cross

Easily transfer measurement data to an Excel® file

Excel® Direct Input function allows you to input measurement values directly and automatically into an Excel® file once the instrument's auto-hold function is activated. (Wireless Adapter Z3210 is necessary)

Regular inspections of GFCIs and RCDs [Photo drawing function]

Record measurement locations and measured values together. Identify trip locations quickly and reliably!

Identifying intermittent trip events [Event recording function]

The meter records event information (times and current values) in its internal memory. Collect data using a tablet and check for trips!

Detect minuscule leakage currents with a newly designed sensor
IEC/EN 61557-13 compliant

The core and shielding are constructed from high-permeability magnetic materials. The CT sensor features a uniform coil. The CM4002/CM4003 complies with the performance standard set forth in IEC/EN 61557-13, an international standard on leak clamp meters.

High-reliability leakage current measurement

1. Uniform measurement sensitivity inside jaws: When affixed around a wire, sensitivity is uniform regardless of the position of the conductor inside the jaws. 2. Resistance to the effects of external magnetic fields: Shielding made of high-permeability magnetic material blocks magnetic fields from the surrounding environment. 3. Elimination of the effects of highfrequency currents: A low-pass filter eliminates high-frequency capacitive leakage currents from inverters and other equipment.

Measurable conductor diameter up to φ40 mm

The jaws have a maximum diameter of φ40 mm and can be used to pinch thick cables or multiple cables at once.

Long-time continuous measurement with output function and external power supply function

Waveform/RMS output function. Waveforms and fluctuations can be recorded in combination with a recorder. External power supply function allows continuous measurement for a long period of time using an AC adapter (optional).

Basic specifications (Accuracy guarantee period: 1 year, Accuracy guarantee period after adjustment made by Hioki: 1 year)

AC Current range6.000 mA, 60.00 mA, 600.0 mA, 6.000 A, 60.00 A, 200.0 A, 6 ranges, True RMS
Basic accuracy 45 Hz - 400 Hz: ±1.0% rdg ±5 dgt (6.000 mA to 6.000 A), ±1.5% rdg ±5 dgt (60.00 A, 200.0 A)
Basic accuracy 15 Hz - 45 Hz, 400 Hz - 2 kHz: ±2.0% rdg ±5 dgt
Defined accuracy range: 0.060 mA to 200.0 A
AC Voltage rangeN/A
Frequency range15.0 Hz to 2000 Hz
Crest factor3 (other than 200.0 A range), 1.5 (200.0 A range)
Filter functionCut off frequency: 180 Hz ±30 Hz at filter ON (-3 dB)
Output functionRMS (RMS value output), WAVE (waveform output)
Other functionsMax/ Min/ AVG/ PEAK MAX/ PEAK MIN value display, Display value hold and auto hold; Backlight, Auto power save, Buzzer sound, Event count display, Comparator, Simple event recording, Rush current measurement
DisplayDisplay refresh rate: 5 times/s
Power supply- AA-size alkaline battery (LR6) × 2; Continuous operating time: 48 hr. (without Z3210 installed), 30 hr. (with Z3210 installed and using wireless communications)
- AC Adapter Z1013 (5 V DC, 2.6 A)
Core jaw diameterφ 40 mm (1.57 in.)
Dimensions and mass64 mm (2.52 in) W × 233 mm (9.17 in) H × 37 mm (1.46 in) D, 400 g (14.1 oz.)
AccessoriesConnection Cable L9097 × 1, USB Cable × 1, Carrying case C0203 × 1, Instruction manual × 1, Operating Precautions × 1, AA-size alkaline battery (LR6) × 2

Log into your myHioki account to access more technical documents and information where available.

Seminar Videos On Demand

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Seminar Schedule

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Catalog: CLAMP METER Series Download PDF  [6MB] English
Catalog: WIRELESS ADAPTER Z3210 Download PDF  [1MB] English
Catalog: AC LEAKAGE CLAMP METER CM4002, CM4003 Download PDF  [2MB] English

User Guides

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If you can not download, log into your myHioki account to access more technical documents and information where available.

Instruction Manual Korean
Instruction Manual English
Instruction Manual Simplified Chinese
Instruction Manual Spanish
Instruction Manual German
Instruction Manual French
Instruction Manual Italian

Outline Drawings

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Technical Notes

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Declaration of Conformity


Drivers, Firmware

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Receiving side BNC (female), output banana (male) *Not compatible with older generation Memory Hicorders with banana input terminals



100 V to 240 V AC


• Increase your work efficiency, by eliminating human errors from manual reporting • Transfer readings on instruments to easy-to-read graphical reports to prove integrity • Compliance with wireless regulations in more than 50 countries and regions

Learn more


Output terminal: BNC, power terminal: USB-C, 1.5 m

Connect to your smartphone or tablet


• Mobile app for iOS, Android • Improve efficiency of operations that repeat measurement and recording • Analyze correlated data during issues and generate quick reports

Learn more



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