This lot includes two Bussman Fusetron FRS-R-60 fuses, each with a maximum amperage of 60 amps and voltage of 551-600V. These fuses are classified as RK5 fuses and are designed for use with AC current. They are ideal for electrical equipment and supplies applications and are perfect for use in a variety of industries. The brand is Fusetron, which is known for its high-quality electrical fuses. This lot is a great value and is sure to meet your needs.