Rack cooling unit Rittal 3366.505, built-in display, 1250 W, 230 V, steel housing, grey

Rittal 3366.505 is a rack cooling unit with a built-in display, intended for controlling the climate inside server racks and electrical enclosures. The unit provides up to 1250 W of cooling power and operates on 230 V at 50–60 Hz with a nominal current of 6.9 A. Its steel/stainless-steel grey housing is designed for reliable installation in wall-mounted or rack-mounted applications where regulated temperature and consistent heat removal are required.

Advantages

The Rittal 3366.505 combines a compact design with a clear built-in display for local temperature and status monitoring. With 1250 W cooling capacity and compatibility with standard 230 V power supplies, it supports continuous operation in environments with moderate heat loads. The steel housing offers mechanical robustness and corrosion resistance appropriate for industrial and IT environments. Where required, the Blue e series features energy-efficient control characteristics and models with integrated condensate evaporators above certain outputs.

Suitable for

• Small to medium server racks and network cabinets requiring active cooling
• Electrical control cabinets and distribution enclosures with heat-generating components
• Wall-mounted installations or flat/horizontal mounting formats where space is limited
• Enclosures that benefit from local display readout for temperature and unit status

When it may not be suitable

This unit provides up to 1250 W of cooling power and is therefore not intended for very large data centers or enclosures with high-density heat loads that require greater cooling capacity. It also requires a 230 V supply and a suitable mounting arrangement; installations lacking adequate clearance, airflow paths, or power supply compatibility may need a different model. For applications requiring remote IoT connectivity, the Blue e IoT adaptor is available but only for models from certain output categories.

Key specifications

• Cooling capacity: up to 1250 W
• Supply voltage: 230 V, 50–60 Hz
• Current draw: 6.9 A
• Housing material: steel / stainless-steel finish, grey
• Display: integrated local display for temperature and status
• Mounting: wall-mounted / rack-compatible flat format
• Condensate management: electrical condensate evaporator integrated on higher-output Blue e models

How to use

Install the cooling unit according to enclosure manufacturer guidelines and Rittal mounting instructions, ensuring correct orientation and adequate ventilation paths. Connect to a 230 V supply with proper circuit protection and verify the unit’s current rating against the available circuit capacity. Use the built-in display to set temperature setpoints, monitor operating status and alarms, and follow the service intervals specified by Rittal for filter cleaning or replacement. If condensate management is required, confirm the model includes the electrical condensate evaporator or provide an appropriate drain solution.

What to consider before purchase

• Required cooling capacity of the enclosure (compare heat dissipation of installed equipment to 1250 W)
• Mounting space and orientation (flat/horizontal or wall-mounted compatibility)
• Availability of a 230 V power supply and appropriate circuit rating
• Need for condensate management or IoT connectivity (Blue e IoT adaptor availability depends on model output)
• Environmental conditions such as ambient temperature range and ingress protection requirements

Usage recommendations

For reliable operation, maintain clear airflow through the enclosure, clean or replace filters regularly, and verify electrical connections and grounding. For installations requiring remote monitoring or integration, consider the Blue e IoT adaptor for compatible models and consult Rittal documentation for controller settings and integration options.