EKL1-63B High Quality 10KA 30mA Type B RCD 4P 40A/ 63 Amp B Type RCCB

40A 4Pole Type B RCD RCCB Residual Current Circuit Breaker. Type B RCCBs, in addition to normal AC, can detect high frequency AC and pure DC earth leakage currents. Automatically disconnect the circuit when earth fault/leakage current occurs and exceeds the rated sensitivity.