Mersen Ferraz Shawmut Fuse Block, Open Style, 250 VAC/VDC, 30 A, 3 Pole, 3, Class: H, Fuse Holder Code: H, Screw, 14 to 10 AWG Wire, Threaded Mount, For Use With: OT, RF, A2Y Types 1 and 3 OTN, CRN and NRN Fuse, Glass Reinforced Polycarbonate, 3 in L x 3 in W x 1.38 in H