... of GB16916.1, IEC61008, BS4293 etc. It is used in the circuits of AC 50~60Hz, single phase 230V(220V ... ), three phases 400V (380V) in industrial & mining enterprises, commercial buildings and2.Product DescriptionLIEL series Residual ... 60Hz, single phase 230V(220V), three phases 400V (380V) in industrial & mining enterprises, commercial buildings and housing for protection of ...