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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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Specification:
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:
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Measures AC current up to 5A with high accuracy.
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Active analog output — easy to read using ADC pins on MCUs.
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Based on ZMCT103C precision current transformer.
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Electrical isolation between high-voltage AC and microcontroller.
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Compact design with 3-pin interface: VCC, GND, and analog output.
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Plug-and-play with ESP8266, ESP32, Pi, etc.
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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.
Shipping & Returns
Shipping & Returns
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• Order can be return within 10 days from date of delivery.
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Refund policy
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• Refund of the order will be initiated after receiving the product at the warehouse address
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For any query, please Call/WhatsApp to our helpline number +91-9999115521/+91-9999115512







