Circuit breakers are essential electrical protection devices designed to safeguard circuits from damage caused by overcurrent, short circuits, or electrical faults. They automatically interrupt current flow when abnormal conditions are detected, preventing equipment failure and fire hazards. Common types include miniature circuit breakers (MCBs), molded case circuit breakers (MCCBs), and air circuit breakers (ACBs), each suited for different voltage and current ratings. Key features include trip mechanisms (thermal, magnetic, or hybrid), adjustable trip settings, and modular designs for easy installation. Typical products in this category include residential MCBs (e.g., 10A-63A), industrial MCCBs (up to 2500A), and high-voltage ACBs for power distribution systems. Advanced models may offer smart monitoring, remote control, and IoT integration for predictive maintenance.