397530 with Fuse is a one pole, 1 kiloamp (1kA), 500 volts alternating current (VAC), nh4 rated motherboard fuse manufactured by DF Electric. The nh4 rate indicates that this fuse has a breaking capacity of 4000 amps, allowing up to 1kA of steady current flow. The 500 VAC rating indicates that this fuse is suitable for use in networks operating at a voltage between 250 VAC and 500 VAC. This fuse can be used in a variety of applications including power distribution systems, automotive, solar, wind, and marine applications.