The 3209510 is a Terminal Block Connector 2 Position Feed Through Gray 12-26 AWG. Phoenix Contact Push-In Technology DIN Rail Terminal Blocks Push-In technology allows wires to be connected easier and faster than ever before. Developed by Phoenix Contact, users can quickly connect ferruled wires by directly pushing them into the terminal, without the use of tools. Stranded wires can also be connected by depressing the orange actuator, and inserting the conductor. The wires are retained with a stainless steel leg spring which tightens under tension. This allows for the rapid connection of many wires while still keeping very high pullout forces.