LittelfuseĀ® POWR-GARDĀ® Fuse Block, Indicating, Series: LFJ, 600 VAC, 30 A, 2 Poles, Class: J, Box Lug, 14 to 10 AWG Wire, DIN Rail Mount, 2.252 in Fuse Length, 0.81 in Fuse Dia, 125 deg C, For Use With: JTD_ID, JTD Time-Delay Fuse and JLS Fast Acting Fuse, Thermoplastic, 3.84 in L x 2.2 in W x 1.95 in H