SK3374.540 Rittal AIR/WATER HEAT EXCHANGER 3000W COMFORT CONTROL, 400V, 50/60HZ

Why Choose the Rittal SK 3374.540 Wall-Mounted Air/Water Heat Exchanger?

The Rittal SK 3374.540 is a high-performance wall-mounted air/water heat exchanger with e-Comfort control designed for reliable cooling of industrial electrical and electronic enclosures. It transfers heat from the enclosure's closed internal air circuit to a cooling-water system, making it particularly suitable for harsh environments where dust, contamination or high ambient temperatures make conventional ambient-air cooling impractical.

The SK 3374.540 uses an advanced e-Comfort controller to regulate and monitor enclosure temperature, with a factory setting of +35 °C. The controller supports fault signalling and system monitoring, while an integral non-return valve assists reliable operation of the cooling-water circuit. Flexible water connections and support for external or fully internal mounting simplify integration into a wide variety of industrial enclosure systems.

The manufacturer specifies a total cooling output of 2 kW at L35/W10 with a 400 l/h water flow for the current SK 3374.540 configuration. The unit operates from a 400 V AC, two-phase, 50/60 Hz supply and measures approximately 400 × 950 × 145 mm (W × H × D), combining substantial enclosure cooling capacity with a relatively shallow wall-mounted design.

Key Advantages

• High-performance wall-mounted air/water heat exchanger for industrial enclosures.
• 2 kW total cooling output at L35/W10 and 400 l/h.
• e-Comfort controller provides intelligent temperature regulation and monitoring.
• IP55 protection rating supports operation in demanding industrial environments.
• Closed internal air circuit helps prevent dust and contaminants from entering the enclosure.
• Suitable for ambient operating temperatures up to 70 °C.
• Flexible water connections support straightforward integration with central cooling systems.
• External mounting or full internal mounting allows flexible enclosure installation.

Key Features

• Rittal wall-mounted air/water heat exchanger.
• 2 kW total cooling output at L35/W10 and 400 l/h.
• 400 V AC, two-phase, 50/60 Hz rated operating voltage.
• e-Comfort temperature controller with +35 °C factory setting.
• Water-carrying components manufactured from copper/brass (Cu/CuZn).
• Cooling-water inlet temperature range of 1–30 °C.
• Permissible operating pressure of 1–10 bar.
• IP55 protection category to IEC 60529.
• 100% duty cycle for continuous industrial operation.
• Integral non-return valve for the e-Comfort controlled version.

Reliable Closed-Circuit Cooling for Industrial Enclosures

Air/water heat exchangers such as the Rittal SK 3374.540 remove heat from an enclosure by circulating internal air across a water-cooled heat exchanger. The enclosure air and surrounding ambient air remain separated, allowing electrical and electronic components to be cooled without drawing contaminated outside air into the cabinet.

This cooling principle is particularly effective in production environments with high dust levels, elevated ambient temperatures or an existing central chilled-water supply. With an operating range extending to 70 °C ambient temperature, IP55 protection and e-Comfort control, the SK 3374.540 provides dependable thermal management for demanding industrial applications.

Typical Applications

• Industrial electrical control cabinets.
• Automation and PLC enclosures.
• Machine tool control systems.
• Drive and inverter cabinets.
• Manufacturing and production machinery.
• Dusty, contaminated or high-temperature industrial environments.
• Applications with a central cooling-water supply.
• Enclosures requiring closed-circuit cooling with intelligent temperature monitoring.