Cabinet Coolers

Cabinet coolers use clean compressed air to control the temperature within cabinets containing electrical components and to keep them cool and clean. They are a practical alternative in many applications to fans, which can pull in dirty or humid air, and air conditioners, which are more expensive and need ongoing maintenance.

RS Australia stocks a broad range of compressed air cabinet coolers suited to industrial enclosures of varying sizes and heat loads. The range includes pneumatic cabinet cooler units and panel cooler systems available across multiple flow rates, with models operating at standard compressed air pressures and pneumatic maximum cooling capacities to suit light-duty and heavy industrial environments.

How Cabinet Coolers Work

A vortex cabinet cooler works by introducing clean, filtered compressed air into a swirl chamber, which sets the air spinning at high speed. This rotation separates the single air stream into two distinct streams: a hot outer vortex and a cold inner counterflow, with no moving parts involved in the process.

The cold air stream is directed into the electrical control cabinet coolers to reduce internal temperatures, while the hot air stream is safely exhausted to the outside. The result is continuous, reliable cooling without electricity or refrigerants.

Benefits of Compressed Air Cabinet Coolers

Compressed air cabinet coolers offer several advantages over fan-based ventilation and active air conditioning systems:

• No Moving Parts: With no mechanical components to wear out, compressed air coolers deliver maximum reliability and require minimal servicing compared to fans or refrigerant-based cooling systems.
• Compact Footprint: Panel coolers mount directly through a standard electrical knockout, requiring minimal space and enabling fast installation without modification to the enclosure.
• Quiet Operation: An integrated silencer muffles the hot air exhaust stream, keeping operational noise to a minimum in shared or occupied workspaces.
• Stainless Steel Construction: The vortex tube and body are manufactured from stainless steel, resisting corrosion, supporting easy washdown cleaning, and extending service life with minimal upkeep.
• Sealed Enclosure Protection: Unlike fans, compressed air cabinet coolers prevent dust, moisture, and contaminants from entering the electrical enclosure during operation.

Applications of Cabinet Coolers

Cabinet coolers are deployed wherever sealed electrical enclosures are exposed to high ambient temperatures, contaminants, or rigorous cleaning processes.

Heavy Manufacturing Lines

On heavy manufacturing lines, control panels housing PLCs, variable frequency drives, and motor starters generate significant internal heat loads. When ambient temperatures rise, electrical control cabinet coolers prevent the thermal conditions that cause digital displays to misread, instrumentation calibration to shift, and circuit breakers to trip below their rated loads.

Processing Plants

Chemical and industrial processing plants expose control enclosures to high ambient temperatures and corrosive atmospheres. A pneumatic cabinet cooler provides sealed, contamination-free cooling without introducing outside air into the enclosure. As a result, it protects automation equipment from chemical vapours and particulates that degrade insulation and accelerate component failure.

Food and Beverage

Food and beverage facilities require cooling equipment that withstands frequent high-pressure washdowns and sanitising chemicals. Stainless steel cabinet air coolers rated to NEMA 4X (IP66) maintain enclosure integrity during washdown cycles. They protect control electronics from moisture ingress while meeting food-safe production hygiene requirements.

Cabinet Cooler Types

Cabinet coolers are available in several configurations to suit different heat loads and environments.

• Continuous Operation Cabinet Coolers: These run at a constant flow rate to deliver ongoing cooling and positive enclosure pressure. They are best suited to high-ambient-temperature environments or where continuous purging is needed to exclude dust, moisture, and contaminants at all times.
• Vortex Tubes: The core technology inside most compressed air coolers, vortex tubes are also available as standalone units for custom cooling configurations where a standard cabinet cooler footprint cannot be accommodated.
• Thermostatically Controlled Systems: A solenoid valve and thermostat activate the cooler only when enclosure temperature exceeds a preset threshold. This conserves compressed air and reduces operating costs in environments where heat loads fluctuate throughout the day.

How to Choose Cabinet Coolers

Selecting the right pneumatic cooler requires matching the unit to the enclosure's thermal, environmental, and operational needs:

• Calculate Total Heat Load: Convert internal component wattage (Watts × 3.41 = Btu/hr) and add external heat transfer from ambient conditions to determine the required cooling capacity.
• Match the NEMA/IP Rating: NEMA 12 (IP54) suits general industrial environments while NEMA 4 (IP66) handles wet or damp conditions. NEMA 4X (IP66) is required for corrosive or washdown areas.
• Verify Compressed Air Pressure: Pneumatic coolers perform best at 60 to 100 PSI (4.1 to 6.9 bar). Reduced inlet pressure directly lowers cooling output.
• Select the Flow Model: Use continuous operation for constant heat loads or contamination risk. Thermostatically controlled models conserve compressed air where heat loads fluctuate.

Buy Cabinet Coolers Online from RS Australia

RS Australia is a trusted manufacturer, supplier, and distributor of cabinet coolers for industrial and commercial applications. The RS PRO range includes pneumatic cabinet coolers rated at 35 cfm and 1,500 Btu/h, engineered to eliminate heat-induced downtime across manufacturing lines, processing facilities, and control panels.

RS Australia ships nationwide, ensuring prompt delivery of cooling equipment to industrial facilities across the country. For full details on delivery services and fees, visit our Delivery page.