The product is a lot of 3 Ferraz Shawmut OTS30 one-time 30A 600V class K5 fuses. These electrical fuses are designed for commercial, branch circuit, and industrial applications. With a maximum amperage of 30A and voltage range of 551-600V, these D-type cartridge fuses are suitable for specific current ratings of 16-30A. The brand Ferraz Shawmut ensures quality and reliability, making these fuses a trusted choice for electrical equipment and supplies in various industries.