The Bussmann Fusetron FRN-R-70 Dual Element Time-Delay Class RK5 Fuse is a reliable electrical fuse designed for industrial applications. This plug-in/on fuse has a maximum amperage of 250A and operates with a time-delay/slow-blow fuse speed to provide overload protection. Made of copper and suitable for interior use, this D-type cartridge fuse is designed for one phase and has a voltage rating of 201-250V. It also features a dial control style and is manufactured in the United States. With its high-quality construction and brand reputation, the Bussmann Fusetron FRN-R-70 fuse ensures the safety and efficiency of electrical systems.