SK3216.480 Rittal Air/water heat exchanger Wall-mounted 4.5/7 kW 400/480 V 3~ 50/60 Hz

Why Choose the Rittal SK 3216.480 Wall-Mounted Air/Water Heat Exchanger?

The Rittal SK 3216.480 is a high-capacity wall-mounted air/water heat exchanger designed for reliable climate control of industrial electrical enclosures in demanding environments. By transferring enclosure heat into a cooling-water circuit, it provides efficient closed-loop cooling while keeping sensitive internal components isolated from contaminated ambient air.

With a total cooling output of 7 kW at L35 W10 with 500 l/h water flow and 4.5 kW at L35 W20, the SK 3216.480 is suitable for substantial thermal loads generated by drives, power electronics, automation equipment and other heat-producing components. A thermostat-controlled magnetic valve regulates the cooling-water flow according to enclosure temperature.

The unit supports 400 V AC, three-phase, 50 Hz and 480 V AC, three-phase, 60 Hz supplies and provides IP55 protection to IEC 60529. Its robust 450 × 1800 × 300 mm wall-mounted housing, copper/brass water circuit and operating temperature capability up to +70 °C make it particularly suitable for harsh industrial installations.

Key Advantages

• High-capacity air/water heat exchanger for industrial electrical enclosures.
• 7 kW cooling output at L35 W10 and 500 l/h.
• 4.5 kW cooling output at L35 W20.
• Closed-loop water cooling helps protect equipment from dust and contaminated ambient air.
• IP55 protection to IEC 60529.
• Thermostat-controlled magnetic valve automatically regulates cooling-water flow.
• Suitable for harsh environments with ambient temperatures up to +70 °C.
• 100% duty cycle supports continuous industrial operation.

Key Features

• Rittal SK wall-mounted air/water heat exchanger.
• 7 kW total cooling output at L35 W10, 500 l/h.
• 4.5 kW total cooling output at L35 W20, 500 l/h.
• 400 V AC, 3~, 50 Hz rated operating voltage.
• 480 V AC, 3~, 60 Hz rated operating voltage.
• Maximum rated current of 1.4 A at 50 Hz and 1.2 A at 60 Hz.
• Internal airflow of 4075 m³/h at 50 Hz and 4840 m³/h at 60 Hz.
• Thermostat-controlled magnetic valve.
• Internal thermostat with change-over contact.
• Factory temperature setting of +35 °C.
• Temperature setting range of 20–55 °C.
• Cooling-water inlet temperature range of 1–30 °C.
• IP55 protection rating.
• Copper/brass water-carrying components.

High-Capacity Closed-Loop Cooling for Industrial Enclosures

Air/water heat exchangers remove thermal energy from an electrical enclosure by transferring heat from the internal air circuit into a controlled cooling-water supply. This allows the enclosure to remain effectively isolated from the surrounding atmosphere, making water-based cooling particularly useful in dusty, oily or otherwise contaminated industrial environments.

The Rittal SK 3216.480 combines a high 7 kW cooling capacity with thermostat-controlled water regulation and powerful internal airflow. Its wide operating temperature range, continuous-duty capability and robust copper/brass water circuit make it suitable for demanding machinery, automation and power-electronics applications.

Typical Applications

• High-power industrial electrical control enclosures.
• Variable-speed drive and servo-control cabinets.
• Power electronics and inverter systems.
• Automation and PLC control panels.
• Machine-building electrical enclosures.
• Manufacturing and production equipment.
• Dusty or contaminated industrial environments.
• Applications with an available industrial cooling-water circuit.