Littelfuse NLS090, Ul Class K5 One-Time Fuse, 90A, 600AC/600DC, 1 Piece

NLS series fuses provide low cost protection for general-purpose feeder and branch circuits when available short circuit currents are less than 50,000 amperes. They replace all Class H fuses which have only a 10,000 ampere interrupting rating. They are suitable for use in many residential and smaller commercial and industrial applications.