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Yokogawa CL345 40mA/400A Leakage Current Clamp-On Meters


Clamp-On Tester for AC Leakage Current Measurements 


  • True RMS display.
  • Leakage current measurement with current range from 40mA to 400A.
  • 40mm in diameter of measurable conductor.
  • Auto power off.
  • Manual range switching.
  • Approved for conformity to safety standards EN61010-1, EN61010-2-032
    (CAT III 300V)


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SKU: Yokogawa CL345 Category: Tags: ,

Yokogawa CL345 is a true RMS Clamp-on tester that provides an easy-to read, 3999 count display. The CL345 is able to measure current with noise or harmonics from 40 mA to 400 AAC .  It is an accurate and robust dedicated leakage meter with a mid-size clamp diameter  that accepts conductors up to 44 mm diameter.

Parameter Reference


AC Current Wide (20Hz to 1kHz) 50/60Hz
40mA/400mA 2.5+10 (20 to 1kHz) 1.0+5 (50/60Hz)
400A (0 to 350A) 2.5+10 (40 to 1kHz) 1.0+5 (50/60Hz)
400A (350 to 400A) 5.0 (40 to 1kHz) 2.0 (50/60Hz)
At 23°C ±5°C, 75% RH or less
Accuracy: ±(% rdg + dgt) = ±(% readout + value of least significant digit)
General Specifications


Method of detection True RMS
Display LCD (Digital display:3999 counts)
Response Time Approx. 2 seconds
Range Switching Manual range
Data Hold On all ranges
Peak Hold On all ranges
Ambient Temperature and Humidity 0 to 40°C
85% RH or less (no condensation)
Temperature Coefficient N/A
Influence of External Magnetic Field 10mA or less in proximity to a 15mm-dia conductor carrying 100Amps.
Influence of Conductor Position 40/400mA range: Within 5dgts at every part inside the jaw (400A range).
0 to 250A range: Within ±0.5% rdg ±5dgt at every part inside the jaw section.
Influence of residual current 12mA or less in proximity to a 10mm-dia conductor carrying 100Amps.
Safety Standard EN61010-1, EN61010-2-032 (CAT III 300V)
Circuit Voltage 300Vrms or less
Withstanding Voltage 3.7kV AC for one minute
Power Supply R0-3(UM-4) x 2 or LR03 x 2
Battery Life Approx. 40 hours (continuous)
Consumed Current Approx. 13mA
Auto Power Off Approx. 10 minutes
Diameter of Measurable Conductor 40mm maximum
Dimensions Approx. 81mm (W) x 185mm (H) x 40mm (D)
Weight Approx. 270g
Accessories User’s manual (IM CL345), Batteries & Carrying Case (93030)
Ordering Information
Yokogawa CL345 Clamp-On Tester for AC Leakage Current. Includes: User’s manual, batteries, and carrying case


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