FeaturesDIN rail adapters permit secure, positive snap-on mounting of Bussmann Series 0 to 30 a fuse blocksAdapter mechanically locks into mounting hole of fuse block in sec to become an integral part of the blockOne adapter is required for Bussmann Series 1 and 2-pole blocksTwo adapters are required for 3-pole blocksWith the exception of the 32 mm DIN rail, all blocks with adapters can be removed from a rail simply by pulling up its release tabUse of rail end stops on both sides of adapters is recommended