Attwood ATO/ATC Fuse Holder

The Attwood ATO/ATC Fuse Holder is a watertight, heavy-duty electrical protection component designed for marine and boating applications. This fuse holder accommodates ATO and ATC fuses up to 30 amps, making it suitable for mid-range DC electrical circuits found on recreational boats, pontoons, and offshore vessels. Its weatherproof construction ensures reliable performance in salt spray, moisture, and the corrosive marine environment where standard automotive fuse holders fail prematurely.

The fuse holder comes equipped with 12-gauge wire leads, eliminating the need for additional connectors and simplifying installation on existing boat electrical systems. The heavy-duty construction protects against vibration damage and loose connections—critical concerns on vessels subject to wave action and engine vibration. The 30-amp rating supports essential circuits such as navigation lighting, bilge pumps, cabin fans, and auxiliary equipment without overload risk. The sealed design prevents water ingress that would otherwise compromise electrical continuity and create short circuits below deck.

This product is intended for weekend anglers upgrading aging electrical systems and serious offshore operators maintaining critical safety circuits. Freshwater and saltwater boaters both rely on ATO/ATC fuse holders to isolate and protect individual circuits without running a complete harness replacement. If you're rewiring an older console, adding dedicated circuits for new electronics, or simply replacing a corroded fuse block, the Attwood ATO/ATC Fuse Holder delivers the marine-grade reliability required for years of service. Note that fuses are sold separately.