The Littelfuse 313/315 Slo-Blo fuse is designed to offer broad application requirements while providing reliable performance and cost-effective circuit protection. Its unique indicating design, which shows discoloration upon opening, simplifies troubleshooting and saves time. This fuse is ideal for use as supplementary protection in appliance or utilization equipment to protect components and internal circuits. It is available in various ratings and configurations to meet diverse application needs.