Maxi Fuse Block. The most economical fuse block for 30-80 Ampere fusing. Snap-on terminal cover insulates all conductive parts, satisfying ABYC/USCG requirements. Accepts wire sizes 18-4 AWG from sides or bottom. For use on systems up to 32 Volts DC. Terminal screws compress fuse blades within blocks for low resistance connections. Accepts Maxi™ Fuses.