AC Leakage Clamp meter


M-1140 series


In addition to measuring leakage current and load current with high accuracy, the measured data can be stored on a server by linking with a smartphone or tablet with a built-in Bluetooth function. The data can be used for “early detection of equipment failure” and as an “indication for deterioration diagnosis”.


  • Storage of measured data
  • Simple display of current waveform
  • Easy management by linkage with map information
  • Central management of multiple measuring instruments
  • Measured data will be stored on the server


Range Resolution Accuracy
30mA 0.01mA ±1.2% rdg ±5dgt
300mA 0.1mA
3A 0.001A
30A 0.01A ±1.0% rdg ±1% of full scale
300A 0.1A 0 〜 200A : ±1.2% rdg ±5dgt
200A 〜 250A : ±3.0% rdg ±5dgt
250A 〜 300A : -5.0% rdg ±5dgt


Parameters M-1140X M-1140XR M-1140
(No Bluetooth Function)
Measuring Range AC: 30 mA / 300 mA / 3 A / 30 A / 300 A / auto-range
CT inner diameter φ40 mm
Communication Bluetooth 4.2, communicate range: up to 10 m(indoor, line-of-sight) -
True RMS detection - Yes -
Filter Function High frequencies higher than approximately 150Hz will be cut
Max Hold Function The Maximum displayed value will be held
Other Functions Over-rangge indication, Low battery indication, Auto-power off, Data hold, Backlight.
Sampling Rate Approx. 2 times/sec
Overvolatage Category CAT III 1000V / CAT IV 600V
Conformable Standards EN61326, EN61010, RoHS
Applicable Circuit Voltage Low Voltage circuit AC 600 V or less (insulated wire)
Operating temperature and humidity range 0℃ to 50℃, 85%RH or less (without condensation)
Power Source Battery CR2032x1
Dimension, Mass Max.2000m
Accessories Battery, Carrying case, Hand strap, Instruction Manual
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