Rack heat exchanger Rittal 3375.500, IP55, Heat exchanger for cabinets, Width 450 mm, Depth 220 mm, Height 1400 mm, Grey

Rittal 3375.500 is a water-to-air heat exchanger designed for cabinets and racks that require IP55 protection and reliable thermal management. With a compact footprint of 450 mm width, 220 mm depth and 1400 mm height, this grey heat exchanger removes heat from electrical enclosures by transferring internal heat to a closed water circuit. It is suitable for industrial control cabinets, server racks and enclosures in harsh environments, offering flexible mounting and water-connection options and an output range that covers typical rack cooling needs.

Advantages

The unit provides IP55-rated protection to guard internal components against dust and splash water while maintaining effective heat removal through a water/air exchange principle. It supports partial or full internal mounting and offers convenient mechanical mounting options for wall or cabinet installation. Flexible water connection options simplify integration with existing cooling loops. Built to perform in tough environments, it delivers consistent thermal control across a range of output classes from 375 to 5,000 W.

Suitable for

• Industrial control cabinets requiring continuous temperature control
• Server racks and network enclosures in small- to medium-sized IT rooms
• Enclosures in manufacturing and process automation exposed to dust or splash water
• Applications where space is limited and a slim footprint is required

When it may not be suitable

This heat exchanger is designed for water-cooled systems; it is not suitable where no facility exists to provide a closed water circuit or where air-cooled cooling is specifically required. For environments requiring higher ingress protection than IP55 or extreme corrosion resistance, alternative enclosure cooling solutions or materials should be considered.

Key specifications

• Protection class: IP55
• Cooling principle: water-to-air heat exchanger
• Width: 450 mm
• Depth: 220 mm
• Height: 1400 mm
• Typical output range: 375–5,000 W (depending on operating conditions)
• Mounting: partial or full internal mounting; wall/cabinet mounting options
• Connections: flexible water connection options for integration with closed water circuits

How to use

Install the heat exchanger according to cabinet layout and available mounting points, choosing partial or full internal mounting as needed. Connect the unit to a closed water circuit using the provided or compatible plumbing fittings, ensuring correct flow direction and leak-free joints. Commission the system by verifying water flow, temperature differentials and enclosure temperature under typical load. Regularly inspect connections and clean external surfaces to maintain airflow and heat-transfer performance.

What to consider before purchase

• Availability of a compatible closed water circuit and chiller or cooling source
• Required cooling capacity based on enclosure heat dissipation and ambient conditions
• Space and mounting options within the cabinet for a 450 × 220 × 1400 mm unit
• Environmental requirements — confirm IP55 is adequate for the installation site

Usage recommendations

For reliable operation, size the heat exchanger to exceed the expected heat load with margin, ensure water quality meets supplier recommendations, and schedule periodic inspections of fittings and airflow paths. Use flexible connection hoses or properly installed rigid piping to minimize vibration transmission and potential leaks.