Blue Sea 5245 30A ATO/ATC Fuse

The Blue Sea Systems 5245 30A ATO/ATC Fuse is a fast-acting circuit protection device engineered for marine electrical systems, automotive applications, and sensitive electronic equipment. Available in a two-pack, this fuse provides reliable overload and short-circuit protection when reliability matters most on the water or at the dock.

The 30-amp rating handles moderate-draw circuits common in marine navigation systems, cabin lighting, and auxiliary power distribution. Tin-plated connector blades resist corrosion in salt-air environments, a critical advantage for boat owners operating in coastal waters where oxidation and electrical degradation occur rapidly. The fast-acting design is optimized for electronics sensitive to voltage spikes, making it suitable for depth sounders, GPS plotters, and radio systems. A visible indication of blown condition allows quick identification during troubleshooting—essential when electrical diagnostics need to happen quickly while underway or away from shore.

Weekend anglers running smaller sport boats, offshore fishermen with complex electrical demands, and cruising sailors all rely on ATO/ATC fuses as standard circuit protection. The 30-amp rating bridges applications requiring more protection than common 25-amp circuits but less than heavy-load 40-amp installations. Whether upgrading an aging electrical panel, maintaining backup inventory, or replacing a blown fuse in an emergency, the two-pack format ensures you're never caught without a spare.

ATO/ATC fuses remain the marine industry standard for circuit protection, trusted across recreational and commercial vessels. Blue Sea Systems is recognized for manufacturing marine-grade electrical components built to withstand harsh saltwater conditions and demanding duty cycles that exceed automotive-grade standards.