Rack cooling unit Rittal 3329.540 TopTherm — steel, IP34/IP54, for 19" racks, 400 mm width

Rittal 3329.540 TopTherm is a steel-mounted rack cooling unit designed for 19" racks with a 400 mm installation width. With protection classes IP34 and IP54, this TopTherm model provides directed cooling for electronic components in network, server and industrial control cabinets. The unit is built for wall or rack mounting and integrates energy-efficient Blue e technology, an e-Comfort controller and a corrosion-resistant RiNano coated condenser with electrical condensate evaporation.

Advantages

This rack cooling unit combines a compact steel housing with targeted airflow management to maintain stable internal cabinet temperatures. The integrated e-Comfort controller enables precise temperature regulation and easy monitoring, while the RiNano coating improves condenser durability in demanding environments. Electrical condensate evaporation reduces the need for external drains, simplifying installation and maintenance. The IP34/IP54 ratings offer protection against dust and splashing water, suitable for many industrial and IT settings.

Suitable for

• Cooling 19" server and network cabinets with 400 mm internal width
• Small to medium-sized industrial control cabinets and switchgear enclosures
• Wall- or rack-mounted installations where space is limited
• Environments that require corrosion resistance and condensate management

When it may not be suitable

This unit is intended for cabinets with a 400 mm width and may not fit wider or non-standard enclosures. For installations that need higher protection than IP54 (for example, full washdown or immersion), or for very large data center rooms where centralized cooling is preferred, a different cooling solution may be more appropriate.

Key specifications

• Mounting: wall or rack-mounted for 19" cabinets
• Housing material: steel
• Installation width: 400 mm
• Protection class: IP34 / IP54
• Cooling category: Blue e energy-efficient series (2–4 kW range)
• Controller: integrated e-Comfort temperature controller
• Condenser protection: RiNano coating
• Condensate handling: electrical condensate evaporation

How to use

Install the unit into the 19" cabinet or onto the wall following the manufacturer’s mounting instructions, ensuring correct alignment with the 400 mm opening. Connect the electrical supply and integrate the e-Comfort controller to set the desired cabinet temperature and control parameters. Position intake and exhaust pathways so airflow through the cabinet is not obstructed. Regularly check condensate evaporation function and clean air filters and condenser surfaces according to the maintenance schedule to ensure reliable operation.

What to consider before purchase

• Confirm the internal width of the cabinet is 400 mm and that the unit fits the available mounting space
• Verify required protection level (IP34/IP54) matches the installation environment
• Check the cooling capacity required for the heat load of installed equipment (refer to kW range)
• Plan for electrical supply and possible integration with cabinet monitoring systems

Usage recommendations

For reliable cabinet climate control, match the unit’s cooling capacity to the heat dissipation of installed equipment, maintain unobstructed airflow paths, and schedule periodic filter and condenser inspections. Use the e-Comfort controller to optimize setpoints and reduce energy consumption while protecting sensitive electronics.