Littelfuse 37211000411 is an 1 A 250 V AC DC Fuse Board Mount (Cartridge Style Excluded) Through Hole Radial, Can, Vertical (LTMR) with a fast acting, time delay, high interrupt rating, and high temperature standing function. It has an 1000 Vac operating voltage, a 250 Vac/250 Vdc interrupt rating, and a 6.3 x 32 mm body size. The fuse features a nickel-plated steel can and uses advanced ferrule technology with mechanical stability in vertical mounting designs. Its fast-acting properties provide additional protection against sudden surges, while the time-delay feature ensures proper operation in applications including motors and transformers. This fuse is suitable for use in board level power protection, machinery or industrial power supplies, power tools, and renewable energy systems.