Industrial 3TY7450-0A N

The Siemens 3TY7450-0A-N is a three-pole main contact kit designed for use with Siemens 3TF45 contactors in motor-control and industrial switching applications. This replacement kit includes three moving contacts and six fixed contacts to renew switching performance when contacts wear, and it is compatible specifically with the 3TF45 family. It is rated for AC3 operation up to 38 A at a maximum of 600 V, making it suitable for standard motor-start scenarios in panels and control cabinets. The 3TY7450-0A-N designation identifies this variant of the contact kit in Siemens catalogs. Weight is approximately 0.11–0.13 lb (about 50–60 g), enabling straightforward replacement in field service or panel maintenance. Use this accessory in industrial control environments where Siemens 3TF45 contactors are employed to restore reliable opening and closing of the main contacts and to maintain the performance of the drive or motor-start assembly.