In this blog, we'll explore different types of PDUs, review top-rated models for data centers and server racks, and provide guidance on choosing the best PDU for your environment. Not all PDUs are created equal. Best-in-class intelligent rack power distribution (PDU) with up to 50% more power, twice as many outlets, and a 4-in-1 combination outlet design for fast, flexible deployment Maximizing density, speed of deployment, and availability in data center environments. Unique colors, input cord plugs and. A cabinet or floor-standing PDU is a large, three-phase power distribution unit enclosed within its own cabinet. Simply put, a distribution cabinet is an enclosure that contains circuit breakers, relays, busbars, and monitoring devices.