Siemens World Series 3TY6540-OA is a 3-pole, 250 A replacement contact kit (NEMA size 3.5) designed to refresh the main-contact assembly on compatible World Series contactors used in industrial motor-control applications. This 3TY6540-OA package serves as the replacement main-contact set for high-current switching, restoring the electrical path and switching performance when contacts wear in starters, MCCs, or motor drives. Sold as a complete assembly with mounting screws and related hardware, it provides the components needed to install on eligible Siemens World Series equipment and maintain compatibility with existing control circuits.
