ECNR300 is a 300 A Edison RK5-class time-delay current-limiting fuse rated for 250 V, designed for feeder and branch protection in industrial power systems. It uses dual-element construction with knife-blade (blade end x blade end) terminals and measures about 2.06 in by 8.63 in (52.3 mm x 219.2 mm). With an interrupting rating of 200 kAIC at 250 V, this non-indicating fuse is intended for protection where short surges are tolerated but sustained overloads must be interrupted, making it well suited for feeder/branch protection applications in electrical panels and equipment.
