Siemens 3TY4803-0AQ0 Three Phase AC Contactor

Siemens 3TY4803-0AQ0 is a replacement coil assembly for Siemens three-phase contactors, providing 480V AC control power to energize the contactor winding in motor-control circuits. This part is cataloged as a contactor/starter coil, serving as the electromagnet that pulls the contactor's main contacts closed or allows them to open in response to the control voltage, enabling safe, remote switching of three-phase loads. The 3TY4803-0AQ0 designation indicates the coil's compatibility with Siemens equipment and its 480V AC control specification, a common requirement in industrial control panels where the control circuit operates at higher voltage. As a replacement coil, it enables maintenance of existing Siemens contactor assemblies without replacing the entire unit, supporting quick service in automation lines that rely on reliable control relays for motor-driven equipment. Given its 480V AC coil rating, ensure your control circuit matches this voltage to avoid coil damage and verify that the associated contactor is intended to be energized by a 480V control signal in your plant.