Marine ST Blade Fuse Block - 6 Independant Circuits. This product is corrosion resistent, tin-plated copper fuse clips to reduce heat and improve the efficiency of the electrical system. It has two terminal block jumpers, it accepts ring terminals and includes clear insulating covers. Maximum operating voltage - 32V DC. Maximum operating amperage - 30A per circuit, 40A per jumped circuit group. Fuse type - ATO or ATC Fuses. Screw terminal - #8.32 screws with captive lock washer. Mounting - #8 screw (M4). Recommended wire size - Branch circuits: 10-16 AWG (6-1.5mm squared). recommended torque - #8-32 screw: 18 in-lb (2.0 N-m).