Measuring AC current with an Arduino can be a little tricky.  The use of this Itead TA12-100 current transformer makes it possible.

Current sensor ICs allow design engineers to use Hall-effect-based current

sensor ICs in new applications where increased energy efficiency or new operating

features are required.


  • Onboard precision micro current transformer.
  • Onboard sampling resistor .
  •  Module can be measured within 5 a alternating current, the corresponding analog output 5 A/ 5 mA
  •  PCB board size: 18.3 (mm) x17 (mm).
  •  Rated Primary Current at 50/60 Hz: 5 A
  •  Maximum Primary Current at 50/60 Hz: 20 A
  •  Turns Ratio: Np:Ns = 1:2,500
  •  Current Ratio: 5A:2mA
  •  Winding D.C. Resistance at 20 °C: 155 Ω
  •  Accuracy •@RL≤10 Ω: 2%
  •  Operating Temperature: -40 to 85 °C
  • Storage Temperature: -45 to 90 °C
  • Dielectric Withstanding Voltage: 4,000 V / 1 mA / 1 sec

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ZMCT103C 5A Range Single Phase AC Current Transformer Sensor Module for Arduino

  • Product Code: ZMCT103C
  • Availability: In Stock
  • Rs.250

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