Blue Sea 6 Circuit Terminal BlockThe Blue Sea Systems Terminal Block features a closed black design that completely insulates power from the mounting surface. Each screw pair is one isolated circuit; Jumpers allow creation of common circuits; Specifications: Circuits: 6; Maximum Voltage: 600V AC/DC; Continuous Rating: 30A; Base Material: Phenolic; Bus Material: Nickel-Plated Brass; Screw Size: #8;