LOT OF (4) The Bussmann Fusetron FRN-R-100 Time Delay Dual Element Fuse is a reliable and high-quality electrical component designed for commercial and industrial applications. With a maximum amperage of 100A and voltage rating of 201-250V, this fuse offers thermal overload protection and operates on an on/off method. Made of copper material, it is suitable for both interior and exterior use, providing universal smart home compatibility. This D-Type Cartridge fuse, with 4 poles, is a dependable choice for ensuring electrical safety in various settings.