ZMCT103C 5A AC Current Sensor Module – High Precision Active Output Transformer for Arduino in Pakistan

Overview

The ZMCT103C Module is a single-phase AC active output current sensor. While other sensors can be “noisy,” the ZMCT103C uses a dedicated current transformer that provides excellent isolation and precision. It includes an onboard multi-turn potentiometer, allowing you to calibrate and amplify the output signal to fit your specific needs. This makes it the ideal module for DIY energy monitors, over-current protection circuits, and IoT projects looking to track the health of AC appliances.

Key Features 

• Active Output: Unlike passive transformers, this board includes an onboard Op-Amp (operational amplifier) to provide a usable analog signal.

• Adjustable Gain: Use the built-in potentiometer to fine-tune the output voltage range.

• Superior Isolation: Provides a high level of electrical isolation between the high-voltage AC line and your low-voltage microcontroller.

• Compact & Reliable: Small PCB footprint with high-quality soldering, designed for long-term AC monitoring.

• AC Specialization: Optimized for 50Hz/60Hz signals, making it more stable than Hall Effect sensors for home power monitoring.

Technical Specifications 

ZMCT103C vs. ACS712: Which one to choose? 

• Choose ZMCT103C if you are measuring AC only (like a light bulb, fan, or computer) and want high precision without the “drift” caused by magnetic fields.

• Choose ACS712 if you need to measure DC or very high current (up to 30A).