Stulz updates CyberRack active rear door
23rd January 2026
GERMANY: Stulz has launched an updated version of its CyberRack active rear door, offering enhanced performance, greater flexibility and easier integration for high density cooling applications.
The CyberRack active rear door is a space saving, rear mounted heat exchanger with EC fans that capture heat directly at the exact point of generation.
For use in both air- and liquid-cooled data centre environments, the CyberRack includes integrated sensors to continuously monitor both return and supply air temperatures within a server rack to ensure optimal cooling performance. As a result, cooling output automatically adapts to server heat load.
It is engineered to deliver maximum cooling capacity in a footprint depth of just 274mm. Delivering up to 49kW chilled water cooling, it also supports higher water temperatures and can extend free cooling hours.
Thanks to its compact footprint, the CyberRack can be deployed without rack repositioning, making it ideal for retrofit projects and environments where floorspace is limited. Custom adaptor frames allow seamless integration with a wide range of rack sizes, supporting standalone operation, supplemental precision air conditioning or hybrid deployments alongside direct-to-chip liquid cooling.
It has been designed for easy maintenance, with a two-step door opening of more than 90° allowing access to fans and coils, while hot swappable axial fans with plug connectors help to simplify servicing and minimise downtime. Alongside low noise emissions, the system’s differential pressure control precisely adjusts fan speed to match the server’s airflow requirements.
Stulz’s E² intelligent control system features a 4.3in touchscreen with unified menu logic. It enables advanced functions such as redundancy management, cross-unit parallel operation, standby mode with emergency operation and seamless integration with building management systems.
