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home > 5A Current Sensor Current Transformer ZMCT103C Single Phase AC Current Transformer Module Active Output Current Sensor Module BOARD > 5A Current Sensor Current Transformer ZMCT103C Single Phase AC Current Transformer Module Active Output Current Sensor Module BOARD

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5A Current Sensor Current Transformer ZMCT103C Single Phase AC Current Transformer Module Active Output Current Sensor Module BOARDSpecification: Parameter Details Model ZMCT103C Sensor Type Current Transformer (CT) Input Current Range 0 5A AC (RMS) Output Signal Analog voltage (active output via op amp) Rated Input Current 5A Output Voltage Range Typically 0 1V (depends on burden resistor and gain) Operating Voltage (Module) 5V DC Transformer Type Single phase, closed loop current transformer Sensitivity High suitable for milliamps to amps sensing Linearity Error 0. 2% (typical)

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Specification:

Name: 5A Current Sensor Current Transformer ZMCT103C Single Phase AC Current Transformer Module Active Output Current Sensor Module BOARD
Brand: www.lodomez-construction.com
SKU: 42306826385
Price: 110.00 USD
Availability: InStock
Rating: 4.0963 (1008 reviews)

Parameter	Details
Model	ZMCT103C
Sensor Type	Current Transformer (CT)
Input Current Range	0 – 5A AC (RMS)
Output Signal	Analog voltage (active output via op-amp)
Rated Input Current	5A
Output Voltage Range	Typically 0 – 1V (depends on burden resistor and gain)
Operating Voltage (Module)	5V DC
Transformer Type	Single-phase, closed-loop current transformer
Sensitivity	High – suitable for milliamps to amps sensing
Linearity Error	≤ 0.2% (typical)
Isolation	Galvanic isolation between input (AC line) and output
Core Material	Ferrite core
Onboard Components	Resistors, op-amp (for signal amplification)
Accuracy Class	Class 1 (±1%) or better depending on circuit design
Frequency Response	50Hz / 60Hz (AC Mains frequency)
Module Dimensions	~25mm × 20mm × 20mm (varies slightly by variant)
Output Interface	3-pin header (VCC, GND, Signal OUT)
Applications	Energy metering, overload detection, smart meters, IoT

Features:

Measures AC current up to 5A with high accuracy.
Active analog output — easy to read using ADC pins on MCUs.
Based on ZMCT103C precision current transformer.
Electrical isolation between high-voltage AC and microcontroller.
Compact design with 3-pin interface: VCC, GND, and analog output.
Plug-and-play with ESP8266, ESP32, Pi, etc.
Suitable for home automation, energy monitoring, and smart grid applications.

Description:

The ZMCT103C AC Current Transformer Module is a compact, high-accuracy sensor designed to measure single-phase AC current up to 5A. It uses the ZMCT103C core, a precision current transformer chip known for high linearity and low phase shift, especially useful in energy metering and AC current monitoring applications.

This module converts the AC current passing through the primary side into a small analog voltage signal proportional to the current. The active output is amplified through onboard components (such as op-amps and resistors), making it suitable for direct interfacing with microcontrollers (Arduino, ESP32, STM32, etc.), analog-to-digital converters (ADCs), or data acquisition systems.

It is widely used in smart energy meters, overload protection, IoT energy monitoring, and current sensing circuits. Its high sensitivity and isolated measurement allow safe and accurate sensing without direct electrical connection to the high-voltage AC line.