UBAL High-Current Terminal Blocks Phoenix Contact UBAL High-Current Terminal Blocks are designed for aluminum conductors and copper wires (AL-CU). The high current terminal blocks operate at a voltage rating of 1kV. These UBAL terminal blocks provide pre-lubricated contact cavities that simplify the connection of aluminum conductors. The UBAL blocks help in achieving optimum conductor connection with a high-tightening torque. These blocks are maintenance-free and offer a simplified assembly process, with pre-greased terminal points. The UBAL blocks feature extremely robust housing that is made from fiberglass-reinforced polyamide with V0 approval. These blocks offer high-level safety, with optional touch-proof caps for conductive clamping par. Phoenix Contact UBAL terminal blocks can be mounted on standard DIN rail (except UBAL 240), or directly on the mounting plate.