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Simply put, Fuse Blocks are a marine device that provides overcurrent protection on your boat. The two main categories of overcurrent protection are Fuses & Circuit Breakers. Captain’s Marine Supply stocks a wide assortment of marine grade circuit protection devices, manufactured by such top brands as BEP, Blue Seas Systems, & Sea Dog. If you’re looking for quality, brand name Fuse Blocks & Holders for Branch Circuits or Hi – Amp circuits then shop with us today & save!