PDUs (Power Distribution Units) come in several types, each designed to support different power distribution needs within IT environments. Choosing the correct type of PDU depends on system size, equipment demand, and the level of power control required by the facility.
Basic PDUs
Basic PDUs offer simple electrical distribution. These units do not feature monitoring or switching functions. They are commonly used in compact 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
Metered PDUs allow facilities teams to view electrical load information at the unit. A display panel indicates how much power is being drawn by connected equipment. Tracking 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
Monitored PDUs provide remote access to load information through a network connection. IT teams can review power usage without visiting the cabinet physically. This assists with maintenance planning and system audits. Remote monitoring also enables facilities teams to identify 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 combine monitoring and switching features. These units provide real-time data on voltage, current, and power usage. Some models support environmental monitoring sensors that measure temperature and humidity levels. Intelligent PDUs are widely used in larger 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 feature supports business continuity during power interruptions.
Rack Mounted PDUs
Rack mounted PDUs are built for installation within server cabinets. Zero-U units provide multiple outlets without occupying check here rack unit space. Horizontal units 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 protect uptime and supports infrastructure reliability.