The JTN60030 is a JTN600-series 30A 600VAC/DC cartridge Branch Circuit Fuse Holder with neon indicating finger safe, tin-plated copper alloy terminations. This holder features neon lamp is ON when fuse opens, voltage source and current path are present, short-circuit current rating of 300000A with Cooper Bussmann LPJ, SP fuses, rapid, flexible 35mm DIN rail mounting, one piece interlocking design for assembling multiple pole blocks reduces inventory costs, removable fuse carrier allows fuse replacement away from base while maintaining finger-safe rating, for use with class-J fuses.