Common PDU configurations in European data centres
Schleifenbauer designs and manufactures PDUs based on what is actually required within the rack. Not from fixed product ranges, but from the power architecture and practical layout of European data centres. In practice, this often results in recognisable PDU configurations that are widely used across many facilities.
This article outlines these commonly requested configurations, explains why they are so frequently applied, and describes how they are technically structured within modern data centre environments.
Schleifenbauer PDU
Why PDU configurations are so recognisable
Data centre designs are rarely created entirely from scratch. In practice, racks are expanded, mirrored, replicated across multiple locations, adapted within existing power architectures.
As a result, engineers tend to select configurations that have already proven themselves in operation. Many of these layouts are familiar from standard product ranges offered by various PDU manufacturers, but the underlying specifications are largely vendor-independent.
In practice, the same questions always arise:
How much power per rack?
Which phase configuration?
Which outlet types?
What level of metering and switching is required?
Single-phase 16A vertical rack PDU (0U)
This configuration is widely used in colocation and enterprise environments with a relatively even load per rack.
Typical specifications
Single-phase 230V / 16A input
Vertical 0U mounting
12 to 14 IEC C13 outlets
2 to 4 IEC C19 outlets
Optional metering or outlet-level switching
Applications
Colocation racks
Edge environments
Network racks
Schleifenbauer configures these PDUs without additional cost, with attention to phase balance, outlet positioning and future expandability, ensuring straightforward integration into existing racks.
Three-phase 32A managed PDU – the data centre standard
By far the most common configuration in modern European data centres is the three-phase 32A PDU.
Typical specifications
Three-phase 400V / 32A input
Vertical 0U format
24 to 36 outlets
Combination of IEC C13 and C19
Input, branch and outlet-level metering
Outlet-level switching
Network connectivity via SNMP, API and web interface
Applications
Enterprise data centres
Colocation facilities
Private cloud environments
This configuration often forms the basis for standardisation within a data centre. Schleifenbauer supports this by configuring PDUs at no additional cost that remain technically familiar to engineers and operators.
High-density PDUs for HPC and AI racks
With the rise of GPU servers and AI workloads, power demand per rack is increasing significantly. This requires PDU configurations capable of handling higher currents and elevated operating temperatures.
Typical specifications
Three-phase 63A
High proportion of IEC C19 or combination outlets
High temperature rating
Designed for high power density
Extensive metering capabilities
Applications
HPC clusters
AI training and inference environments
Research and academic data centres
For these configurations, Schleifenbauer takes thermal load, cable routing and future rack power requirements into account as standard, without additional cost.
Metering and switching as standard building blocks
Where metering and switching were once optional, these functions are now standard elements of many PDU configurations.
Common metering levels
Input-level metering
Branch-level metering
Outlet-level metering
Common functions
Remote outlet switching
Staggered switching
Load balancing support
These features are not vendor-specific, but reflect how data centres are operated today. Schleifenbauer integrates this functionality so that the PDU can evolve alongside changing operational requirements.
Configuration based on existing rack designs
Engineers rarely look for a “new” PDU architecture. In practice, the requirement is usually for:
the same outlet distribution
the same phase configuration
the same functionality
adapted to the specific project. Many search queries implicitly refer to familiar configurations from existing environments. Schleifenbauer uses these recognisable layouts as the starting point for new PDU configurations, without being restricted by fixed part numbers or product series.
Other common PDU configurations in European data centres
In addition to the most widely used standards, other PDU configurations are also found in European data centres. These are typically not driven by new design, but arise from existing power architectures, legacy environments or specific project requirements.
Single-phase 32A vertical rack PDU
This configuration is used where higher power per rack is required, but a three-phase connection is not available or desirable.
Typical specifications
Single-phase 230V / 32A input
Vertical 0U mounting
16 to 20 IEC C13 outlets
4 to 6 IEC C19 outlets
Optional input or outlet-level metering and switching
Applications
Specific colocation environments
Edge locations with limited infrastructure
Legacy racks with higher single-phase loads
While technically viable, this configuration is increasingly replaced by three-phase solutions in modern data centres due to improved phase distribution and scalability.
Three-phase 16A vertical rack PDU
The three-phase 16A PDU is more common than often assumed, particularly in existing European data centres where available rack power is lower but a three-phase infrastructure is present.
Typical specifications
Three-phase 400V / 16A input
Vertical 0U format
18 to 24 IEC C13 outlets
Limited number of IEC C19 outlets
Optional input and branch-level metering
Applications
Existing data centres
Mirrored rack deployments
Environments with standardised lower rack power
Technically, this configuration closely resembles three-phase 32A solutions, but with a lower total rack power. It therefore remains relevant where expansion must take place within existing power limits.
European manufacturing and project-based configuration
Schleifenbauer manufactures PDUs in Europe and configures them on a project basis. This enables:
delivery of both small and large quantities
exact replication of existing configurations
rapid response to project specifications
For engineers, this means that a PDU can align with what is already present in the rack, without the need to redesign the power layout.
Conclusion
Most rack PDUs in European data centres are based on a limited number of proven configurations. By using these configurations as a reference point, Schleifenbauer aligns with how data centres are actually built, expanded and operated.
Not by promoting fixed product ranges, but by configuring PDUs that are technically logical, recognisable and compatible with existing infrastructure.
If you are not looking for a new PDU architecture, but for a reliable alternative to an existing configuration, Schleifenbauer aligns with how engineers and data centre managers actually search. By using well-known APC, Raritan and Vertiv configurations as a reference, Schleifenbauer does not replace a brand, but provides a technically familiar and practically deployable solution.
