The ABB ZL300 Main Contact Kit is a replacement main contact assembly designed for use in compatible ABB contactors (such as A300/AF300 series). It serves as a spare or service part to restore the primary switching contacts of a contactor, ensuring reliable operation of the main power circuit. The kit includes the essential contact elements — fixed and movable contacts, springs, and mounting hardware — needed to maintain or repair the main electrical switching path in three‑phase contactors.
