The Littelfuse 313/315 Series Slo-Blo[®] fuse is a time-lag fuse designed for a broad range of applications requiring reliable performance and cost-effective circuit protection. It offers a unique indicating design where the glass body discolors upon opening, eliminating guesswork and circuit testing. This fuse is suitable for use in appliances and utilization equipment, providing individual protection for components and internal circuits. It features a standard 248-14 lead-free format and is available with various forming dimensions.