The product is a set of four LITTELFUSE polyfuses, each rated at 60V and 400mA with a tripping characteristic of PTC. These self-resettable fuses are designed for DC current and have a maximum amperage of .4A. The fuses are dipped in finish and are model 0ZRR0040FF1E. Made in the USA, they offer a reliable and efficient solution for electrical equipment and industrial applications requiring resettable fuses.