Bring 208 V three-phase power into a cabinet and distribute it across 24 locking IEC outlets with this Raritan PX4 intelligent rack PDU. The outlet layout combines 12 locking C13 receptacles with 12 locking CX receptacles, allowing a single unit to support equipment with different IEC power connector requirements. Locking outlets help retain power-cord connections in densely cabled racks where vibration, cable movement, or service activity can loosen an ordinary connection. PX4-5551-E7V2A1 is specified for a 60 A input rating, derated to 48 A, and uses an IEC 60309 3P+E 60 A input connection. That electrical configuration suits racks supplied from a three-phase 208 V circuit rather than a standard single-phase branch circuit. Match the input connector, available circuit capacity, receptacle types, and connected equipment load before installation. Within the PX4 rack PDU range, this configuration stands out through its three-phase 208 V service, high-current 60 A input class, and equal split of locking C13 and locking CX outlets. It fits high-density compute, storage, and network cabinets that need numerous retained IEC power connections from one rack-side distribution point. The intelligent PX4 platform places this unit in a managed rack-power environment rather than a basic strip-style PDU.