This lot of Fusetron FRS 100 dual element fuses includes four units with some shelf wear. These electrical fuses have a maximum amperage of 100A and a voltage range of 551-600V, making them suitable for various applications. The fuses are black in color, 7-3/4 inches in length, and designed for single-phase use. Whether you're replacing a faulty fuse or stocking up on spares, this lot of Fusetron fuses offers reliable performance and durability. Ideal for use in industrial and commercial settings, these fuses ensure a safe and efficient electrical system..