THANLFB-500 500 Amp Fuse with Fuse Block, Fuses Rated at 32 Vdc, Stainless Steel Connection Post, Polycarbonate Base, Thermoformed ABS cover. THOR ANL Fuse Kit assemblies are designed to provide code compliant over-current protection. They are used to protect the battery bank, inverter and cables from damage caused by short circuits and overloads. Each Fuse Block Assembly uses a fast acting, current limiting fuse cartridge which provides instantaneous protection in the event of a short circuit, but also employs a time delay to allow momentary current surges common in inverter applications. A rugged injection molded poly carbonate base and thermoformed ABS cover provides durability, easy installation, and good looks all in a compact, cost effective package.