The Siemens 6SE7090-0XX84-1HK0 is a genuine electronic assembly board (Baugruppe) engineered for high-performance industrial applications. As a critical component, this control board is commonly found in the Siemens SIMOVERT MASTERDRIVES series of frequency converters, where it manages essential control and interface functions. Identified by PCB number 476479.0000.01, this module ensures reliable communication and operation within a larger drive system. Built with quality components like the integrated Schrack relay, it serves as a direct replacement part, guaranteeing perfect compatibility and restoring your equipment to its original operational standards with minimal downtime.