CAR BOAT MARINE AUDIO INLINE CIRCUIT BREAKER 50 AMP AMPLIFIER FUSE HOLDER AGUCircuit breakers offer critical protection to your system if the system over powers or short circuits the breaker will cut in and save your equipment. No need to replace expensive fuses, the system is reset via a simple switch also offers safe and instant system shutdown. You will be back listening to your favorite music in no time. Features:Rating: 50 Amp4/8 awg input & output (4mm in diameter)Size: 98mm (L) x 43mm (W) x 35mm (H)High Current Circuit BreakerWorks with 12v - 24v DCFor car, boat, marine, bike use, etc.Stops Power Surges from Damaging Your AmpsMount on Panel or FirewallUnique Push Button Reset can also be used as a Kill SwitchHigh Tech water resistant housingRUBBER BOOTS FOR WATER PROTECTIONNo More Spending Money on Replacing FusesReplaces the AGU Style Fuseholder