RCCBs (Residual Current Circuit Breakers) with overcurrent protection combine two essential safety functions in a single device. They not only detect and disconnect electrical circuits in the event of an imbalance between live and neutral currents, which could indicate a leakage current or potential electric shock hazard, but also provide protection against overcurrent situations such as overloads or short circuits. This dual functionality ensures comprehensive protection by preventing electrical faults and minimizing the risk of fire or damage caused by excessive current.