SK3209.100 Rittal Air/water heat exchanger Roof-mounted 2.5 kW 230 V 1~ 50/60 Hz

Why Choose the Rittal SK 3209.100 Roof-Mounted Air/Water Heat Exchanger?

The Rittal SK 3209.100 is a robust roof-mounted air/water heat exchanger designed for efficient climate control of industrial electrical enclosures in demanding environments. By transferring enclosure heat to a cooling-water circuit, it provides effective closed-loop cooling without exposing sensitive internal components directly to contaminated ambient air.

With a total cooling output of 2.5 kW at L35 W10 with 400 l/h water flow, the SK 3209.100 is suitable for managing substantial heat loads generated by drives, PLCs, power electronics and other industrial equipment. It operates from a 230 V, 1~, 50/60 Hz supply and uses a basic temperature controller factory-set to +35 °C.

Designed for roof mounting, the unit measures 597 × 417 × 475 mm and provides IP55 protection to IEC 60529 as standard. Copper/brass water-carrying components, flexible water connection options and an operating temperature range extending up to +70 °C make it particularly suitable for harsh industrial environments.

Key Advantages

• High-performance 2.5 kW roof-mounted air/water heat exchanger.
• Closed-loop enclosure cooling helps protect sensitive components from contaminated ambient air.
• IP55 protection to IEC 60529 as standard.
• Suitable for demanding environments with operating temperatures up to +70 °C.
• Roof-mounted configuration preserves valuable enclosure side-panel space.
• Flexible water connection options simplify integration with industrial cooling-water systems.
• Copper/brass water-carrying components provide a robust cooling-water circuit.
• Supplied fully wired and ready for electrical connection.

Key Features

• Rittal SK roof-mounted air/water heat exchanger.
• 2.5 kW total cooling output at L35 W10 and 400 l/h.
• 230 V, 1~, 50/60 Hz rated operating voltage.
• Power consumption of 95 W at 50 Hz.
• Power consumption of 110 W at 60 Hz.
• Maximum rated current of 0.4 A at 50 Hz and 0.48 A at 60 Hz.
• Basic temperature controller with factory setting of +35 °C.
• Adjustable temperature setting range of 20–55 °C.
• Cooling-water inlet temperature range of 1–30 °C.
• Operating temperature range of 1–70 °C.
• IP55 protection as standard.
• Maximum permissible operating pressure of 10 bar.
• Water connections via ½-inch connector sleeve and G ⅜-inch external thread.
• 100% duty cycle for continuous industrial operation.

Efficient Closed-Loop Water Cooling for Industrial Enclosures

Air/water heat exchangers remove heat from an enclosure by transferring thermal energy from the internal air circuit to a cooling-water circuit. Because the enclosure air remains separated from the surrounding environment, this method is particularly effective in industrial locations where ambient air contains dust, oil mist or other contaminants that make open-loop fan ventilation unsuitable.

The Rittal SK 3209.100 combines 2.5 kW cooling performance with a roof-mounted format that preserves enclosure wall space. Its basic controller regulates the enclosure temperature, while the flexible water connection arrangement and 10 bar maximum permissible operating pressure support integration into suitable industrial cooling-water systems.

Typical Applications

• Industrial electrical control enclosures.
• Automation and PLC control panels.
• Machine-building electrical cabinets.
• Variable-speed drive and servo-control enclosures.
• Power electronics and industrial control systems.
• Dusty or contaminated production environments.
• Applications with an existing industrial cooling-water supply.
• Installations requiring roof-mounted closed-loop enclosure cooling.