This lot of 10 BUSSMAN NOS-1 fuses are designed for use in electrical applications with a maximum amperage of 1 AMP and voltage range of 551-600 V. The fuse body type is cartridge and the classification is one-time only. These fuses are manufactured in the United States and are perfect for use in a variety of industrial and business applications. The item length is 5 inches and the color is black. These BUSSMAN fuses are reliable and high-quality, ensuring that your electrical equipment is protected from damage and downtime. With their Class H classification, these fuses are perfect for use in a wide range of electrical applications. Whether you are in the market for new fuses for your business or simply need to replace a few old fuses, this lot of 10 BUSSMAN NOS-1 fuses is an excellent choice.