The Littelfuse 313/315 Series Slo-Blo[®] fuse is designed for a broad range of applications requiring reliable performance and cost-effective circuit protection. The fuse's unique 'ID' design allows for instant identification through discoloration of the glass body, eliminating guesswork and circuit testing. It offers the same quality performance characteristics as standard 3AG Slo-Blo[®] Fuses and is suitable for use in appliances and utilization equipment to provide individual protection for components or internal circuits. It is available with various ampere ratings and voltage ratings, and is marked with brand logo, current and voltage ratings, series, and agency approval marks.