Design and Implementation of an IoT-Based Automatic Circuit Breaker with Node MCU

The increasing demand for intelligent electrical systems has led to the evolution of advanced circuit protection solutions. This paper focuses on the development of an IoT-enabled automatic circuit breaker utilizing Node MCU ESP8266. The system is designed to provide real-time monitoring, remote access, and automated fault detection, enhancing safety by identifying issues such as overloads, short circuits, and electrical faults before they cause damage. A significant aspect of this system is its role in ensuring the safety of linemen during electrical maintenance. Many accidents occur due to inadequate communication between substations and field personnel. To address this challenge, the proposed system enables linemen to remotely control power lines through Blynk or Arduino IoT Cloud applications. The Raspberry Pi serves as the core processing unit, integrating with sensors and actuators to collect real-time data. When maintenance is required, linemen can safely turn off the power supply, carry out repairs, and restore electricity using a secure IoT interface. Additionally, LED indicators and an LCD screen display system status for better operational visibility. By incorporating IoT technology, this project significantly improves electrical safety, fault detection, and energy management, offering a modern, efficient, and user-friendly solution for circuit protection.