Mersen Ferraz Shawmut Fuse Block, Open Style, 250 VAC, 30 A, 2 Pole, 2, Class: R, Box Lug, 14 to 4 AWG Wire, Threaded Mount, For Use With: A2D-R, A2K-R and TR-R Series Fuse, Glass Reinforced Polycarbonate, 3 in L x 2.03 in W x 1.38 in H