Westinghouse 503C421801 NSMP is a New Surplus Manufactured Product OEM replacement component from Westinghouse Electric Corporation, built for industrial electrical and automation systems. With part number 503C421801, it is commonly installed in industrial machinery, switchgear assemblies, control panels, and electrical distribution equipment to support maintenance, retrofit, or restoration of legacy Westinghouse systems. Designed for equipment service and replacement installations in industrial and commercial electrical applications, this NSMP part enables OEM‑compatible maintenance and dependable operation of motor control and related control equipment.
