We specialize in Current Sensors, CT Sensors, and Measuring Instruments.

AC Leakage Clamp Meter

M-140 Mini AC Leakage Current Clamp Tester (CE)40mmφCT, ACA

AC Leakage Current, 30mA /300mA, 30/300A, 40mmφ CT


40mmφCT window and ultra compact size.
Least affection from the external magnetic field.
Wide current measurements.(AC0.01mA-300A)
Safety standard IEC 61010-1, IEC 61010-2-032
Installation CategoryⅡ600V or CategoryⅢ300V.
E.M.C. standard EN 61326
Measuring method Dual slope integration mode
Range AC 0~30mA/300mA, 30A/300A, 2 range manual
Accuracy 23℃±5℃ 80%RH or less (50/60Hz)
AC 30/300mA/0.01mA/±1.2% rdg ± 5dgt
AC 30/300A/0.01A/0~200A : ±1.2% rdg ± 5dgt 200~250A : ±3.0% rdg ± 5dgt 250~300A : ±5.0% rdg ± 5dgt
Jaw opening capability 40mmφ
Display 3.5 digit LCD, max. reading of 3200
Over range indication "OL" mark on LCD
Data hold indication "DH" mark on LCD
Low battery indication "Battery" mark on LCD
Operating Temperature 0℃ to 40℃, 80%RH max. ( Without condensation )
Storage Temperature -10℃ to 60℃, 70%RH max. ( Without condensation )
Auto power off Approx. 10 minutes later after power on
Power supply 1.55V (SR-44, LR-44)×2
Battery life Approx. 50 hours(LR-44)
Power consumption 5mW
Withstanding Voltage AC 3700V 1 minute max. (Between the core of CT and outer case)
Size 64(W)×162(H)×23(D)mm
Weight Approx. 125g
Sampling 2 times/sec (Digital display)
12 times/sec (Bar graph display)
Accessories Soft case:1
Instruction manual:1
Batteries LR-44(1.55V):2