Data Center Power Distribution Box Model

Data center power distribution boxes include panelboards, PDUs, modular busways, and power cabinets, each designed for specific capacity, redundancy, and monitoring needs.

Common Types of Power Distribution Boxes

1. Panelboard Distribution Panelboards distribute main data center power to multiple wall-mounted boards. They are typically rated from 1.5 kVA to 75 kVA and can be assembled in the field or pre-assembled by vendors. Power is routed via overhead trays or underfloor conduits to IT racks. This approach is cost-effective and highly customizable for specific data center layouts .
2. Power Distribution Units (PDUs) PDUs are centralized units that distribute power to IT equipment. They can be transformer-based or transformer-less, rated from 50 kVA to 500 kVA, and are often placed along the room perimeter. PDUs may include monitoring, surge protection, and redundancy features. Examples include Delta's regulated PDUs, which protect against surges and provide region-specific configurations .
3. Modular Busway Systems Modular busways provide flexible overhead or underfloor power distribution. They support high-density racks (up to 30 kW per rack) and allow easy addition or removal of IT devices without rewiring. Busways improve efficiency and enable branch-circuit-level monitoring for capacity management .
4. Power Distribution Cabinets Cabinets like Vertiv's Liebert RXV or TFX series offer dense power distribution in compact footprints. They can handle up to 400 Amp inputs and multiple poles in a single panelboard. These cabinets often include automatic switching between AC sources, monitoring at panelboard or branch circuit levels, and pre-packaged, factory-tested configurations for small to mid-sized data centers .

Manufacturer Examples

• ABB: Offers low and medium voltage products, intelligent distribution systems, and smart metering solutions for optimized energy management and reliability .
• Delta: Provides rack-mounted PDUs with surge protection and regulated power, suitable for region-specific requirements .
• Vertiv: Liebert RXV and TFX cabinets provide compact, configurable power distribution with monitoring and automatic source switching .

Key Considerations

• Capacity: Match the unit's kVA or Amp rating to the data center's load requirements.
• Redundancy: Consider N+1 or 2N configurations for critical systems.
• Monitoring: Branch-level or panelboard-level monitoring improves efficiency and fault detection.
• Flexibility: Modular systems allow easy expansion and reconfiguration.
• Footprint: Compact cabinets save space in high-density environments. Selecting the right model depends on the data center size, power density, redundancy requirements, and monitoring needs, with options ranging from simple panelboards to advanced modular busways and intelligent PDUs.