Heat exchanger Rittal 3373.100

The Rittal 3373.100 heat exchanger provides forced air-to-water cooling with an IP55 protection rating, suitable for use in dusty or wet industrial environments. It measures 400 mm wide, 145 mm deep and 950 mm high and is designed for partial or full internal mounting or wall attachment. The unit supports output classes from 375 to 5,000 W and offers flexible water connection and convenient mounting options for integration into control cabinets and machinery enclosures.

Advantages

This heat exchanger combines a compact footprint with robust protection (IP55), making it appropriate for challenging environments. Flexible water connection options and the ability to mount the unit either partially or fully inside an enclosure — or on a wall — allow adaptable installation. The unit covers a wide range of cooling capacities (375–5,000 W), enabling selection for different thermal loads.

Suitable for

• Cooling control cabinets and electrical enclosures in industrial settings
• Temperature control for machinery and automation equipment
• Applications requiring IP55 protection against dust and water
• Installations needing flexible water connections and varied mounting options

When it may not be suitable

The unit may not be appropriate for installations that require higher protection ratings than IP55 (for example, IP65 or above) or for situations where passive cooling without water connection is preferable. It is also not suitable if a smaller or much larger cooling capacity than the 375–5,000 W range is required.

Key specifications

• Cooling principle: air-to-water heat exchanger
• Protection rating: IP55
• Output range: 375–5,000 W
• Dimensions (W × D × H): 400 × 145 × 950 mm
• Mounting: partial or full internal mounting; wall mounting possible
• Connection: flexible water connection options
• Color: grey

How to use

Install the heat exchanger according to the enclosure manufacturer’s guidelines, choosing partial or full internal mounting or wall attachment depending on space and cooling needs. Connect the water circuit with appropriate hoses and fittings, ensuring tight, leak-free joints and correct flow direction. Provide electrical supply and any required control wiring per the installation instructions. Commission the system by verifying water flow, checking for leaks, and monitoring temperature stabilization under expected load.

What to consider before purchase

• Required cooling capacity compared to the unit’s 375–5,000 W output range
• Available mounting space inside the enclosure or on a wall
• Compatibility of water connection fittings and routing for coolant pipes
• Required protection rating for the installation environment

Usage recommendations

For reliable operation, match the exchanger’s output to the thermal load, ensure correct water flow and filtration to prevent fouling, and follow regular maintenance schedules to retain IP55 performance and heat transfer efficiency.