Blue Sea 5240 7.5A ATO/ATC Fuse

The Blue Sea 5240 7.5A ATO/ATC Fuse is a fast-acting circuit protection device engineered for marine electrical systems, automotive applications, and sensitive electronic equipment. Whether you're running a fishing electronics suite, powering navigation systems, or protecting auxiliary circuits on your boat, this fuse provides reliable protection against electrical overloads and short circuits. The ATO/ATC form factor is the industry standard for small-craft and vehicle electrical panels, making it the go-to replacement when your system trips protection.

Built with tin-plated connector blades, the Blue Sea 5240 resists corrosion—critical in the salt-spray and humid environments where anglers and boaters operate. The 7.5-amp rating sits in the sweet spot for protecting mid-draw circuits like fish finders, VHF radios, cabin lights, and bilge pumps without nuisance trips under normal operating conditions. The fast-acting design means it responds quickly to dangerous current surges, preventing damage to expensive navigation and safety gear. A visible indication of blown condition lets you diagnose electrical faults at a glance, eliminating guesswork when troubleshooting deck systems.

Serious boaters and anglers keep a spare pack of these fuses in their emergency kit—they're compact, lightweight at just 0.1 lbs, and solve electrical gremlins before they strand you on the water. Installation is tool-free; simply pop out the blown unit and slide the replacement into your fuse block. Compatible with all standard ATO/ATC-style fuse panels found in marine binnacles, auxiliary switch panels, and automotive dash blocks, the Blue Sea 5240 is the trusted choice for reliable circuit protection where it counts.