3 phase without distributed neutral, supp without mnt pltReplacement for Acti9 Isobar and Isobar 4c dist brdsFor switchboard mntg supplied+earths and neutral phase coloured Isobar swFor switchboard mntg supplied with earths & neutral black Isobar switch dis3 phase without distributed neutral, supplied fitted on a mounting plateDoor and cover assembliesPan assemblies - accessoriesIsobar P Pan Assembly