The RCCBs F404 series assures protection to people and installations against fault current to earth. A large offer for standard instantaneous is completed with some configurations for special applications. This product is particularly suitable for the protection against smooth d.c. earth fault currents. Type B residual current devices are marked according to EN 62423. The F404 B is for the SMISSLNE TP system. Rated current In 63A, Rated voltage Ue 230/400VAC, Rated sensitivity I Δn 0.3A