Ilsco PDB-24-500-2 - This dual-rated power distribution block has a line conductor range of 500-4 and a load range of 4/0-6, with 2 ports per pole on the line side and 4 ports per pole on the load side. It is UL and CSA recognized, with a voltage rating of 600V and a conductor material of aluminum. With a mounting hole diameter of 0.191 inches and a mounting hole spacing of 4.75 inches, this block is suitable for various electrical applications requiring a heavy-duty and reliable power distribution solution.