750 Amp Fuse Block With Cover | Blue Sea Systems 5503 Blue Sea Systems 750 Amp Fuse Block With Cover 5503 750 Amp Fuse Block with Cover Stainless 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 in.-18 studs accept 5/16 in. (M8) ring terminals, 14 AWG to 2/0 AWG wire