Siemens 3TY7503-0XD0 Industrial Relay Coil Module

Siemens 3TY7503-0XD0 is a replacement magnet coil for Siemens contactor assemblies, specifically designed to work with the 3TF50/51 and 3TK50 series, and is listed as the 3TY7503-0XD0 coil variant. It is an alternating-current coil rated for 45/50 V AC operation at 50/60 Hz, making it suitable for standard control circuits in industrial equipment. In use, the coil energizes the contactor’s magnetic core to move the main contacts, enabling or interrupting power to motors, pumps, conveyors, and other loads in automation panels and machine control. The 3TY7503-0XD0 designation distinguishes this coil from other voltage variants (for example 0AF0 or 0AV0 variants) within the Siemens coil family, so selecting the exact part code ensures proper electrical characteristics and mechanical fit for compatible contactors. When replacing a worn coil, verify that the target contactor is a 3TF50/51 or 3TK50 model and that the supply voltage and frequency match the coil’s 45/50 V AC, 50/60 Hz rating to maintain correct actuation and safe, reliable operation.