Blue Sea ST Blade Fuse Block, 12 Circuits12 Circuits with cover and negative bus Accepts ATO or ATC fuses from 1A to 30A Features: Can be used for 24 hour circuits Clear insulating cover with label recesses accepts small format labels Insulating cover satisfies ABYC USCG requirements Storage for two spare fuses Accepts ring terminals Easy to open, push button latch provides easy access to fuses Tin plated copper buses and fuse clips Positive distribution bus with #10 32 stud Includes 20