AC CLAMP METER CM4141

Innovative Current Sensor Design
Easily Get Into Tight Spaces

Hioki clamp on meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. The CM4141 is a 2000 A AC True RMS clamp meter that features a uniquely designed slim jaw that lets you easily get into the narrow gaps between cables in crowded electrical distribution boxes without fear of damaging the cables or the clamp meter. The broad -25°C to 65°C operating temperature range and IP50 dustproof and waterproof enclosure to enable professionals to work quickly in crowded electrical distribution panels. The high current measurement capability makes it especially useful for industrial applications.

CAT IV 600 V
CAT III 1000 V

Newly Designed Clamp Sensor Gets Between Wires Even with Large Jaw Diameter

Despite the ability to measure up to 2000A AC afforded by the large sensor with φ55mm core diameter, the clamp meter’s innovative jaw design lets you get between the narrow spaces between crowded cables with absolute ease. In addition, electrical panels are sometimes so crowded that you need to push and pull to the clamp to get it around the cable. The CM4141 features a robust construction that delivers strength while letting you weave through complex wiring to get to the right cable, vastly improving work efficiency and speed.

Compared with clamp meters of similar class, the meter weighs only 300g, at least 100g lighter than competitors, letting you use the instrument over long work days with signficantly less effort and physical strain.

Key Features

  • Easily get into tight spaces between cables thanks to thin sensor with a minimum cross-section span of 11 mm
  • Measure up to 2000 A AC
  • AC A, AC and DC V, DC+AC V, resistance, frequency, temperature, and more
  • Expanded -25°C to 65°C operating temperature range

Model No. (Order Code)

CM4141

Basic specifications

Accuracy guaranteed: 1 year, Accuracy guarantee period after adjustment made by Hioki: 1 year
AC Current range 60.00 A to 2000 A, 3 ranges (45 Hz to 1 kHz, True RMS), Basic accuracy 45-66 Hz: ±1.5% rdg. ±0.08 A
Crest factor For the 60.00 A range: 2.5 (greater than 50.00 A and less than or equal to 60.00 A) to 2000 A range: 1.5 (2000 A or less)
DC Voltage range 600.0 mV to 1700 V (*1), 5 ranges, Basic accuracy: ±0.5% rdg. ±0.5 mV (at 600 mV)
AC Voltage range 6.000 V to 1000 V, 4 ranges (15 Hz to 1 kHz, True RMS), Basic accuracy 45-66 Hz: ±0.9% rdg. 0.003 V (at 6 V)
DC+AC Voltage range 6.000 V to 1000 V, 4 ranges, Basic accuracy DC, 45-66 Hz: ±1.0% rdg. ±0.013 V (at 6 V)
Resistance range 600.0 Ω to 600.0 kΩ, 4 ranges, Basic accuracy: ±0.7% rdg. ±0.5 Ω (at 600 Ω)
Electrostatic capacity range 1.000 μF to 1000 μF, 4 ranges, Basic accuracy: ±1.9% rdg. ±0.005 μF (at 1 μF)
Frequency range Voltage: 9.999 Hz to 999.9 Hz 3 ranges, Current: 99.99 Hz to 999.9 Hz 2 ranges, Basic accuracy: ±0.1% rdg. ±0.01 Hz (at 99.99 Hz)
Temperature (K) -40.0 to 400.0 ˚C, Basic accuracy: ±0.5% rdg. ±3.0 ˚C + temperature probe accuracy
Other functions Continuity check, Diode check, Automatic AC/ DC detection (Voltage check only), Max/ Min/ AVG/ Peak waveform MAX/ Peak waveform MIN value display, Low-pass filter function, Display value hold, Backlight, Auto power save, Buzzer sound, Zero-adjustment, and other function
Dustproof, waterproof IP20 (Current measurement of voltage or hazardous live conductors under completely dry condition)
IP50 (When measuring or storing the resistance of a completely dry state or the current of an insulated conductor), However, dustproof and waterproof design equivalent to IP54 only on the handheld part and in a non-measurement state.
Interface N/A
Power supply LR03 Alkaline battery ×2, Continuous use: 48 hr (Backlight OFF)
Core jaw diameter φ55 mm (2.17 in), Jaw dimension: 82 mm (3.23 in) W × 11 mm (0.43 in) D (D dimension is a range value of 44 mm (1.73 in) from the tip of the jaw)
Jaw cross-section Minimum dimension 11 mm (0.43 in) (Range value of 44 mm (1.73 in) from the tip of the jaw)
Dimensions and mass 65 mm (2.56 in) W × 247 mm (9.72 in) H × 35 mm (1.38 in) D, 300 g (10.6 oz)
Accessories Test Lead L9207-10 ×1, Carrying Case C0203 ×1, LR03 Alkaline battery ×2, Instruction Manual ×1, Usage notes ×1
  • *1:Your instrument can be used to measure voltages in excess of 1000V 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.
  • e.g.: When measuring the no-load voltage of an ungrounded PV panel
  • Do not use the instrument with circuits whose terminal-to-ground voltage exceeds 1000V. Doing so may result in electric shock.

Test leads (2)

L9207-10 is a bundled accessory

Options for Test leads (for the L9207-10, L9300) (2)

Attach L9207-10 with the cap removed.
Slide the guard of L9300 and attach as measurement category II.

Options for Test leads (for the L4930) (11)

Test Pin Set L4932 is required when using the Small Alligator Clip Set L4934

Temperature measurement (1)

Other options (1)

Bundled accessory


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