Why can't you use AC Circuit Breakers for DC Circuit Breaker?

There are three primary reason AC circuit breakers can't be used for DC applications lies in the fundamental differences between AC and DC current.AC current naturally crosses zero current, aiding arc extinction in circuit breakers during faults. DC lacks this zero-crossing point, so arcs are not naturally extinguished. Using an AC circuit breaker in a DC system may lead to sustained arcs and potential hazards.DC circuit breakers require specific arc-quenching mechanisms due to the absence of natural zero crossings. These include magnetic blowouts or techniques to rapidly increase contact distance, which are not typically found in AC circuit breakers.AC circuit breakers are designed for maximum AC voltages, which may not adequately withstand DC voltages. DC voltages can degrade insulation materials faster than AC voltages of the same level.While both AC and DC circuit breakers protect electrical circuits from faults, they are not interchangeable due to their inherent differences. Using an AC circuit breaker in a DC system can pose safety risks and may not effectively interrupt fault currents. Always use the appropriate type of circuit breaker for the specific system to ensure safety and proper operation.