30031A/30032A Leakage Current
3/30mA/30/60 Amperes Mini Clamp-on Meters

30031A – Leakage Clamp-on Tester capable of measuring from 1 mA AC
30032A – Leakage Clamp-on Tester with a sharp low pass filter function
Yokogawa 30031A/30032A Clamp-on Meters
  • Leakage current measurement range from 3mA to 60A
  • Diameter of measurable conductor: 40 mm max.
  • Easier and clear display
  • Filter function can cut off harmonics-currents components from 2nd order (30032A)
  • Filter function select on or off (30032A)
  • Durability of clamp: More than 50,000 opening/closing events
  • The clamp lever is lengthened by 30%, enabling smooth opening/closing of the clamp even for thick cables of 40mm in diameter.
  • Typical influence (on the current value of an adjacent cable) from an external magnetic field is 0.0005%.

* All Clamp-on Meters include Test Leads (where applicable) and a carrying case

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  • Can measure leakage currents of 1 mA, which is useful for checking the insulation of low-voltage circuits and electrical components.
  • Can measure a broad range of currents from leakage currents (at a resolution of 0.001 mA) to load currents up to 60 A.


Yokogawa offers an inexpensive dedicated Clamp-on meters that allow you to measure up to 200AAC, with a wide frequency response range.CL100 series and 2343 series have basic function of AC current measurement. These clamps allow you to measure current range from 20mA to 1000A. Choose your desired diameter of measurable conductor from 24mm to 54mm.
  • Literature
  • Specifications
Literature and Technical Information
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Clamp-on Meters – Portable Test Instruments

++ 30031A/30032A Clamp-on Meters| Specification sheet
Model: Yokogawa 30031A/30032A Clamp-on Meters
Display (Bar-graph display: 32 segments)
LCD (Digital display: 3200 counts)
Specific Accuracies
AC Accuracy: 1.0 + 5 (0~30mA)
1.0 + 5 (0~50A)
5.0 + 5 (50~60A)
General specifications
Accuracy: (20A) 2.0+7 (50 to 1kHz)*
Accuracy: (200A) 3.0+10 (40 to 1kHz)*
Frequency characteristics (AC) – 40Hz to 1kHz
(AC-DC) – 20Hz to 1kHz
AC Current 3/30 mA, 30/60A
Measurement Cycle 2 times/second (Digital display), 12 times/second (Bar-graph display)
Method of detection Mean value
Response Time Approx. 2 seconds
Range Switching Auto-range
Data Hold On all range
Ambient temperature & humidity >0 to 40 deg.C, 85% RH or less (no condensation)
Temperature Coefficient 0.05% of range /°C or less (within the ranges of 0-18° and 28-50° for measurement of 0-50 A)
Influence of external magnetic field 0.0005% typical 1 (on current value of adjacent cable)
Influence of conductor position Within accuracy
Safety Standard Approved for conformity to EN 61010-1,EN 61010-2-032
Circuit Voltage 300 Vrms or less
Withstanding Voltage 3.7kV AC for one minute
Auto power-off Approx. 10 minutes
Diameter of measurable
40 at maximum mm
Operating Temp.: 0 – 50
Relative Humidity: 80% (non condensing)
Dimensions Approx. 70 (W) x 176 (H) x 25 (D) mm
Weight Approx. 200 g
Accessories Instruction manual, battery, Soft case
Power Supply One CR2032 (Coin-shaped) 3 V battery
Battery Life Approx. 90 hours (when continuously used)
Consumed Current Approx. 1mA