Marine ST Blade Battery Terminal Mount Fuse Block Kit. Screw terminal. Easily add fused circuits and negative busbar to the barttery terminals. ignition protected when the cover is secure, includes a 4-circuit negative busbar, tin-plated pure electrical copper for maximum coductivity, insulating covers meet ABYC/USCG insulation requirements, screw terminals for securing wires, includes write-on circuit labels and four 16-14 AWG Nylon insulated ring terminals. Voltage maximum operating - 32V DC. Amperage Maximum Operating - 30A per circuit, 100A per block. Fuse typer - ATO or ATC fuses. Bus material - Tin-plated copper C11000. Mounting Hole - Clearance for 3/8" (M10) stud. Screw terminal - #8-32 screws with captive star lock washer.