Mersen Ferraz Shawmut Fuse Block, Open Style, Series: 6SJ, 600 VAC/VDC, 30 A, 3 Pole, 3 Phase, Class: J, Fuse Holder Code: Z, Box Lug, 14 to 2 AWG Wire, DIN Rail/Threaded Mount, For Use With: AJT, A4J and HSJ Series Fuse, Glass Reinforced Polycarbonate, 3.9 in L x 3.62 in W x 2.2 in H