Blue Sea 5191: Battery Terminal Single Fuse Block, 30-300 AmpsCompact, high-amp fuse, appropriate for DC main, inverter, windlass, and bow thruster circuit protectionProvides high current protection in tight space constraintsWeatherproof – for small open boats and other harsh environmentsMounts to 3/8″ battery post, battery switch, or bus system.Voltage Max. Operating: 58V DCAmperage Max. Operating: 300ATerminal Fuses Available: 30-300 AmpsFuse sold separatel