Main Buss Fuse 25A Type of product: Main fuse / Power fuse / Buss Fuse Manufacturer: Balboa Fuse rating: 25 amp Length: 40mm Diameter: 10mm Commonly used with: Balboa systems and PCB's. Also used in some other systems such as Brett Aqualine, Gecko and Hydroquip. Additional notes: This is usually used as the main buss fuse and also as a protector for the components