Bussmann CPB162-3 Power Distribution Block Cover. Bussmann Power Distribution Block Cover, 3 Pole, For Use With: 162 Series Power Distribution Block, Thermoplastic, Black, 2.56 in L x 2.75 in H Dimensions. Additional Description: BUSS-CPB162-3 COVER/SCREW ASSY. FOR 3 POLE 160XX. Catalog Description: Eaton Bussmann series cover/screw assembly, Power distribution block, Flat, Three-pole, Used with PDB series.