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. A unique indicating design allows for instant identification 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 glass body, nickel-plated brass cap, and tin-plated copper leads, meeting MIL-STD-202G standards for terminal strength, solderability, and various environmental conditions.