HIOKI CM4xxx Clamp Meter Series

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HIOKI CM4xxx Clamp Meter Series

Safe, durable, and reliable True RMS clamp meters for AC (CM4141) or AC and DC.
Models CM4141 and CM4375 with "slim jaw" design: Easily clamps within crowded cables.
CM43xx: Simultaneously measure inrush current in RMS and crest values.
Safety: CAT IV 600 V, CAT III 1000 V,
with optional or bundled DC high voltage probe: CAT IV 1000 V; CAT III 2000 V
Ideal for safe inspection of solar installations with high voltages.
Bluetooth communication with optional or bundled Z3210 adaptor.
Manage measurement data using GENNECT Cross software app.

Model Overview

Model	CM4141	CM4371	CM4373	CM4375
Core jaw diameter	⌀55 mm	⌀33 mm	⌀55 mm	⌀34 mm
AC measurement system	True RMS	True RMS	True RMS	True RMS
Frequency characteristics	45 Hz...1 kHz	10 Hz...1 kHz	10 Hz...1 kHz	10 Hz...1 kHz
AC current (resolution), guaranteed accuracy range	2000 A (0.01), 1...2000 A	600 A (0.01), 1...600 A	2000 A (0.1), 1...2000 A	1000 A (0.1), 1...999.9 A
DC current (resolution)	-	600 A (0.01)	2000 A (0.1)	999.9 A (0.1)
AC voltag	1000 V	1000 V	1000 V	1000 V
DC voltage¹⁾	2000 V	2000 V	2000 V	2000 V
Power¹⁾	-	1200 kVA (DC)	4000 kVA (DC)	2000 kVA (DC)
Resistance	6 MΩ	6 MΩ	6 MΩ	6 MΩ
Temperature	-40...+400°C	-40...+400°C	-40...+400°C	-40...+400°C
Electrostatic capacity	✓	✓	✓	✓
Frequency	999.9 Hz	999.9 Hz	999.9 Hz	999.9 Hz
Rush current	✓	✓	✓	✓
Continuity check	✓	✓	✓	✓
Diode check	✓	✓	✓	✓
Non-contact voltage	-	✓	✓	-
Automatic AC/DC detection	✓	✓	✓	✓
Max/min/avg	✓	✓	✓	✓
Bluetooth communication	✓ (with Z3210)	✓ (with Z3210)	✓ (with Z3210)	✓ (with Z3210)
Backlight	✓	✓	✓	✓
Display refresh rate	5 times/s	5 times/s	5 times/s	5 times/s
Safety standard category	CAT IV 600 V, CAT III 1000 V	CAT IV 600 V, CAT III 1000 V	CAT IV 600 V, CAT III 1000 V	CAT IV 600 V, CAT III 1000 V
Safety standard category with P2000	CAT IV 1000 V; CAT III 2000 V	CAT IV 1000 V; CAT III 2000 V	CAT IV 1000 V; CAT III 2000 V	CAT IV 1000 V; CAT III 2000 V
IP rating	IP50³⁾⁴⁾	IP20²⁾, IP54³⁾	IP20²⁾, IP54³⁾	IP20²⁾, IP54³⁾
Power supply	LR03 x2 Alkaline	LR03 x2 Alkaline	LR03 x2 Alkaline	LR03 x2 Alkaline
Dimensions (mm)	65 x 247 x 35; 300 g	65 x 215 x 35; 340 g	65 x 250 x 35; 530 g	65 x 242 x 35; 350 g

1) Only when DC high voltage probe P2000 is used.
2) Voltage measurement in a completely dry condition. When jaw closes.
3) While in storage.
4) When measuring the current in an insulated conductor. Do not use when wet.

Version/Bundle Overview

Model	Clamp meter for	Current range	Safety	IP	Measurements	Bundle
CM4141-50	AC	60 to 2000 AAC, true RMS	CAT III 1000 V, CAT IV 600 V	-	AC and DC V, AC A, AC+DC V, frequency, resistance, temperature and more; with "slim jaw"	-
CM4141-90	AC	60 to 2000 AAC, true RMS	CAT III 1000 V, CAT IV 600 V	-	AC and DC V, AC A, AC+DC V, frequency, resistance, temperature and more; with "slim jaw"	Bundled with Z3210 wireless dongle
CM4371-50	AC/DC	20/600 A, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more	-
CM4371-90	AC/DC	20/600 A, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more	Bundled with Z3210 wireless dongle
CM4373-50	AC/DC	600/2000 A, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more	-
CM4373-90	AC/DC	600/2000 A, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more	Bundled with Z3210 wireless dongle
CM4373-91	AC/DC	600/2000 A, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more	Bundled with P2000 DC high voltage probe
CM4373-92	AC/DC	600/2000 A, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more	Bundled with Z3210 wireless dongle and P2000 DC high voltage probe
CM4375-50	AC/DC	1000 AAC/DC, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more; with "slim jaw"	-
CM4375-90	AC/DC	1000 AAC/DC, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more; with "slim jaw"	Bundled with Z3210 wireless dongle
CM4375-91	AC/DC	1000 AAC/DC, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more; with "slim jaw"	Bundled with P2000 DC high voltage probe
CM4375-92	AC/DC	1000 AAC/DC, true RMS	CAT III 1000 V, CAT IV 600 V	IP54	V, A, Ohm, Hz, C, inrush current, Max/Min/Avg/Peak, and more; with "slim jaw"	Bundled with Z3210 wireless dongle and P2000 DC high voltage probe

Datasheet_HIOKI_Clampmeters_en.pdf