- Waterproof fused distribution block made from PA66 and high and low temperature resistant materials. It offers strong mechanical strength, reliable insulation and heat resistance, and is designed to resist breaking, deformation, burning and short circuits in automotive environments. - Fused distribution block with spare fuse and multiple amperage options. It is delivered with a spare fuse and supports fuses of multiple amperage ratings; when a fuse blows, you can replace it immediately from the spare. - Fuse organizer with waterproof protection. Compared with many market fuse boxes, this unit includes waterproof measures and provides a dependable automotive replacement fuse box solution. - Automotive replacement fuse box for automotive and marine use. The fuse amperage can be selected according to the electrical appliance, making it suitable as a marine fuse block as well. Use scenarios - In a car or truck, power aftermarket accessories (LED lighting, radios, dash cams) with protected circuits to prevent damage from overloads. - On a boat or marine vessel, organize and protect critical circuits (navigation lights, fish finders, pumps) with waterproof performance. - In an RV, trailer or off‑road vehicle, distribute power to multiple devices while selecting appropriate fuse ratings for each circuit.