Westinghouse A202K2B1 is an industrial power contactor used to switch and control heavy electrical loads such as motors, lighting, and heating circuits. It is typically a multi‑pole device designed to handle higher current and voltage levels in commercial and industrial control panels. The contactor operates by energizing a control coil which pulls in the main contacts to complete the load circuit; when the coil is de‑energized, the contacts open to interrupt the load. These contactors are built for frequent operation and long life, making them suitable for motor starters, automation systems, and other demanding electrical applications. The rugged construction and serviceability of Westinghouse contactors make them common in legacy and retrofit installations.