This particular accessory is a three-piece aluminum body lug designed for use with 3-pole 600A-1200A MD/ND frame breakers. It can accommodate wire sizes ranging from 500 to 750KCMIL (CU/AL) and features a two-barrel lug design. These lugs are suitable for both the line and load sides of the breaker. The accessory comes in a kit of three lugs.