DIN rail can be added to 5A frame and 8A frame of US-N* type asstandard and 20A frame as special product. Type name : US-N5SS(TE),US-N5SS(TE), US-N20(TE)RMMoreover, DIN rail can be added to 20A frame and 30A frame of US-H*type as special product. Type name : US-H20RM, US-H30RM, US-H20DDRM, US-H30DDRM, US-H20UF, US-H30UF, US-H20DDUF, US-H30DDUF