Reliance Electric 0-51890-1 DPSB 250 V power supply (0518901) is a power-supply unit from Reliance Electric identified by part number 0-51890-1. The DPSB 250 V designation indicates a nominal 250-volt rating for this model. Part numbers 0-51890-1 and 0518901 refer to the same device in Reliance Electric's catalog, providing a precise identification for ordering and maintenance.
