DC Miniature Circuit Breakers (DC MCBs) are protective devices designed to safeguard direct current (DC) electrical circuits from overloads and short circuits. Unlike their AC counterparts, DC MCBs are specifically engineered to handle the unique characteristics of DC power, such as the constant voltage and lack of zero-crossing points, which affect the breaker’s ability to interrupt current flow. DC MCBs automatically disconnect the circuit when they detect excessive current, thereby preventing damage to electrical components and enhancing safety in applications such as solar power systems, battery circuits, and other DC-powered installations.