The GO POWER 43979-FBL-400 400A FUSE BLOCK with INSULATING COVER is a high-quality replacement part designed specifically for RV, trailer, and camper setups. With a maximum capacity of 400A, this fuse block is reliable and efficient in protecting electrical systems from overloads and short circuits. Manufactured by GO POWER, this part is designed with an insulating cover for added safety and durability, making it a crucial component for maintaining the functionality of your recreational vehicle.