Residual Current Breakers (RCCB/RCBO)

About Residual Current Breakers (RCCB/RCBO)

RCCBs and RCBOs add earth-leakage protection to a circuit, interrupting current when a fault to ground is detected. RCBOs combine this residual-current function with overload and short-circuit protection in a single DIN-rail module, while RCCBs are used alongside an upstream MCB.