The Different Types of PDUs Used in IT Infrastructure

Power Distribution Units (PDUs) come in a range of types, each created to meet varying power distribution requirements within IT infrastructures. Selecting the appropriate type of PDU is determined by system size, equipment demand, and the level of power control required by the facility.

Basic PDUs

Standard PDUs offer simple electrical distribution. These units do not include monitoring or switching capabilities. They are typically used in smaller server rooms where equipment demand is stable and does not require real-time oversight. Basic PDUs are economical and support consistent power delivery across connected devices.

Metered PDUs

Load-Metered PDUs enable facilities teams to monitor electrical load information directly from the unit. A display panel shows how much power is being drawn by connected equipment. Monitoring this information helps minimise the risk of exceeding circuit limits. Metered PDUs are frequently used in environments where power usage must be monitored across multiple racks.

Monitored PDUs

Networked PDUs offer remote access to load information through a network connection. IT teams can review power usage without visiting the cabinet in person. This supports maintenance planning and system audits. Remote monitoring also enables facilities teams to detect unused capacity within power circuits.

Switched PDUs

Switched PDUs include remote outlet control. Each socket can be turned on or off through a management interface. This enables technicians to restart servers or network devices if a system becomes unresponsive. Switched PDUs are commonly used in unmanned facilities or in distributed network environments.

Intelligent PDUs

Intelligent PDUs integrate monitoring and switching features. These units deliver real time data on voltage, current, and power usage. Some models include environmental monitoring sensors that measure temperature and humidity levels. Intelligent PDUs are widely used in enterprise-scale data centres where system performance depends on precise power management.

Automatic Transfer Switch PDUs

ATS PDUs provide redundancy by connecting equipment to two power sources. If one source fails, the unit automatically switches to the backup supply. This function supports business continuity during power interruptions.

Rack Mounted PDUs

Cabinet-mounted PDUs are designed for installation within server cabinets. read more Vertical units offer multiple outlets without occupying rack unit space. Horizontal models fit within standard rack slots and are used where vertical mounting is not suitable.

Selecting the Right PDU

Choosing the appropriate PDU type supports safe electrical distribution and equipment performance. Facilities teams should assess equipment demand, load requirements, and maintenance processes before installing PDUs. Suitable selection helps maintain uptime and supports infrastructure reliability.