RCBO is a residual current operated circuit breaker mainly used to protect the safety of the circuit and personnel. It detects the current leakage of the circuit beyond the rated sensitivity and automatically disconnects the circuit in case of fault. RCBO is widely used in residential, commercial building, industrial field, medical field, laboratory and scientific research field where the circuit and equipment need to be protected from leakage current. Compared with RCD, RCBO is comprehen