RCCB Incoming: Can RCCB detect an anomaly or surplus current coming at instant and interrupt the cir

An RCCB (Residual Current Circuit Breaker) is designed to detect earth leakage currents by monitoring imbalance between live and neutral conductors through a core balance current transformer (CBCT). If a capacitive leakage current from the incoming line passes through the CBCT, it can cause an instantaneous imbalance, potentially tripping the RCCB. However, RCCBs do not provide overcurrent protection; they only respond to leakage currents. For protection against overcurrent or short circuits, an MCB (Miniature Circuit Breaker) or fuse is used in series with the RCCB. Alternatively, an RCBO (Residual Current Breaker with Overcurrent) combines both earth leakage and overcurrent protection in a single device.
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