Fuse Blocks - Blue Sea Systems Fuse Blocks . Fuse blocks loaded with fuses protect the wire in electrical circuits. Blue Sea Systems broad selection of fuse blocks include single and consolidated fuse blocks. Their robust design makes them ideal for marine and vehicle AC & DC electrical systems.St Blade · SafetyHub · St Glass · Safety Fuse Blocks · Terminal Fuse Blocks · ANL Fuse Blocks ST Blade Fuse Block - Blue Sea Systems The ST Blade Fuse Block can offer a space saving and cost effective solution to adding circuit protection when there are limited available circuit breakers on the distribution panel. A single circuit breaker on a distribution panel can provide the circuit protection for the feed wire to the ST Blade Fuse Block. How to Wire a Fuse Box | DoItYourself wwwyourself››Home AutomationStep 6 - Remove Fuse Box. Use a screwdriver and remove the fuse box from its location on the wall. Make sure that there isn't any moisture behind it, or any other type of debris. Step 7 - Install and Wire New Fuse Box. Set the new fuse box in the location and attach it to the wall.