Westinghouse GCA530 Starter Contactor

The Westinghouse GCA530 Size 5 starter contactor is a heavy-duty NEMA magnetic contactor engineered for reliable high-current motor control and power switching in industrial environments. It supports 3-phase motors up to 200 HP at 480/600 V and carries a current rating of approximately 270 A, with coil voltage variants including 120 V and 480 V (other configurations available). Designed for panel or enclosure mounting, it is commonly installed in motor control centers, MCCs, and industrial control panels to manage conveyors, pumps, compressors, HVAC systems, and other heavy loads. The unit is compatible with the Westinghouse/Cutler Hammer family, with common replacements including Eaton GCA530, Allen-Bradley 500 Series Size 5 Contactor, and Siemens Furnas Size 5 Contactor.