DC Molded Case Circuit Breakers (MCCBs) are protective devices designed to interrupt and isolate electrical circuits in direct current (DC) systems when overcurrent conditions or faults occur. Unlike their AC counterparts, DC MCCBs are engineered to handle the unique characteristics of DC power, such as the absence of a zero-crossing point that helps extinguish arcs. They provide reliable protection by automatically disconnecting the circuit to prevent damage, overheating, or potential fire hazards, making them essential for safeguarding DC-powered equipment and installations.