Blue Sea 5503 ANL 750 Fuse Block with Cover. 5503Stainless steel studs provide resistance to corrosion and high torque for excellent electrical contact Insert molded studs ensure secure fuse mounting For use on systems up to 32 Volts DC Large studs accept cables up to 4/0 AWG Insulating cover satisfies ABYC/USCG requirements and cover breakouts allow access in any direction For use on systems up to 32 Volts DC Large 5/16-18 studs accept 5/16 (M8) ring terminals - 14 AWG to 2/0 AWG wire.