The Littelfuse 313/315 Slo-Blo fuse is designed to provide reliable and cost-effective circuit protection for a wide range of applications, including appliances and utilization equipment. The fuse's unique indicating design, where the glass body discolors upon opening, eliminates guesswork and reduces troubleshooting time. It's available in various ampere ratings and voltage ratings, offering flexibility for different circuit protection needs. The fuse is constructed with a glass body, nickel-plated brass cap, and tin-plated copper leads, ensuring durability and reliable performance. It meets various industry standards for terminal strength, solderability, and environmental testing.