Blue Sea - ATO/ATC Fuse Blocks

Blue Sea ATO/ATC fuse blocks are designed to safely consolidate branch circuits and protect onboard electrical systems. Each block features a clear insulating cover with label recesses, conductive-part insulation that meets ABYC and USCG standards, and durable tin-plated copper buses for reliable performance. Beryllium copper fuse clips deliver full 30-amp rating per circuit, and each unit stores spare fuses for quick onboard service. Available in 6-circuit and 12-circuit options with or without a negative bus, these fuse blocks provide clean, organized power distribution for any marine electrical system. Harbour Chandler stocks multiple configurations to support both DIY boaters and professional installations.