WCS1500 Hall Effect Current Sensor Module, 200A Overcurrent/Short Circuit Protection Detector for Arduino/Power Supply

Description

The WCS1500 Current Sensor Module is a Hall-effect-based detection board designed for non-invasive AC/DC current measurement up to 200A, with integrated overcurrent and short-circuit protection signaling. Built around the Winson WCS1500 linear Hall sensor IC, the module features a 9.0mm through-hole conductor that allows the measured wire to pass directly through without breaking or modifying the existing circuit layout . The sensor outputs an analog voltage proportional to the current, centered at VCC/2 when no current flows, with a sensitivity of approximately 11–12 mV/A . The module version adds a comparator circuit (typically LM393) with an adjustable potentiometer, enabling users to set an overcurrent threshold between 2A and 200A with roughly 3A resolution . When the measured current exceeds the set threshold, the module provides both an analog output for measurement and a digital TTL signal for direct microcontroller or relay control. This makes it suitable for individual makers building motor stall protection or short-circuit detection systems, as well as business purchasers seeking a cost-effective, isolated current monitoring solution for power supplies, battery systems, and industrial equipment diagnostics.

Features

• Non-Invasive Through-Hole Sensing: The 9.0mm conductor hole allows the measured wire to pass through without electrical connection, preserving circuit integrity and providing galvanic isolation up to 4000V .

• Wide Current Range: Measures DC current from 0 to ±200A and AC current up to 150A RMS, suitable for high-power motor and power supply applications .

• Adjustable Overcurrent Threshold: An onboard potentiometer allows the overcurrent trip point to be set between 2A and 200A, with a resolution of approximately 3A .

• Dual Output Signals: Provides both an analog voltage output (proportional to current) for ADC measurement and a digital TTL-level output that changes state when overcurrent is detected .

• Visual Status Indicators: Includes a power indicator LED and a separate overcurrent indicator LED that illuminates when the set threshold is exceeded .

• Wide Supply Voltage Range: Operates from 3.0V to 12V, compatible with both 3.3V and 5V logic systems .

Technical Specifications