... 2.Professional of MCB 3.Leakage action current:30,100,300mA. 4P NFIN RCCB Residual Current Device (RCD),are designed for protection of humans and ... : Number of Poles2P, 4PRated Current (A)16, 20, 25, 32, 40, 50, 63, 80Rated Residual Operating Current (lΔn)(mA)30, ... 100, 300, 500Rated Residual Non-operation Current (lΔno)(mA)≤0.5l ...