WCS1800 35A Hall Effect Sensor, Overcurrent Protection

Description

The WCS1800 35A Hall Effect Sensor is a non-invasive AC/DC current detection module built around the Winson WCS1800 linear Hall-effect sensor IC, designed for precise current monitoring and overcurrent protection in power supplies, motor drives, battery systems, and industrial equipment. The module features a 9.0mm through-hole conductor that allows the measured wire to pass directly through without cutting or modifying the existing circuit, preserving circuit integrity and providing galvanic isolation up to 4000V . The sensor outputs an analog voltage proportional to the measured current, centered at VCC/2 when no current flows, with a sensitivity of approximately 60 mV/A — the highest in the WCS series, delivering the best resolution for low-to-moderate current measurements . The overcurrent protection variant adds a comparator circuit with an adjustable potentiometer, allowing users to set a trip threshold across a usable range of approximately 0.5A to 35A . When the measured current exceeds the set threshold, a digital TTL output changes state and an indicator LED illuminates, enabling direct connection to a microcontroller, relay, or shutdown circuit. The WCS1800 is well-suited for individual makers building precise motor stall protection or short-circuit detection systems, and for business purchasers seeking a cost-effective, isolated current monitoring solution where measurement resolution matters.

Features

• Highest Sensitivity in the WCS Series: At ~60 mV/A, the WCS1800 delivers the best resolution for measuring low-to-moderate currents, making it ideal where accuracy matters more than raw range .

• 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 .

• Adjustable Overcurrent Protection: An onboard potentiometer sets the overcurrent trip point across a usable range of roughly 0.5A to 35A .

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

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

• Wide Supply Voltage Range: The WCS1800 IC operates from 3.0V to 12V, though module boards are typically configured for 5V DC operation .

Technical Specifications