SlimKool Series SP28 480 Volt 3-PhaseNEMA 4 or 4X Air Conditioners

The SlimKool Series SP28 is a 480-volt, 3-phase air conditioning unit engineered for demanding industrial and commercial enclosure cooling applications where reliable temperature control and environmental protection are critical. Available in NEMA 4 or 4X ratings, this system delivers closed-loop cooling that isolates the enclosure's sensitive internal components from ambient air and external contamination, ensuring a clean, dehumidified environment regardless of external conditions.

The unit's built-in condensate evaporator eliminates the need for manual condensate drainage under normal operating conditions, reducing maintenance requirements and installation complexity. The system incorporates a compressor short cycle protector that extends compressor lifespan by preventing rapid restart cycles caused by fluctuating heat loads, power interruptions, or solar gain--a particularly valuable safeguard for facilities anticipating future equipment additions or operating in variable-load environments. Condenser impeller cycling control further optimizes energy efficiency by modulating fan operation based on cooling demands. The refrigeration system uses environmentally responsible CFC-free R134a refrigerant and features epoxy-coated condenser and evaporator coils that withstand 1000 hours of salt spray testing per ASTM B 117, providing reliable performance in challenging environments. NEMA 4X models include internal corrosion protection on brazed refrigeration system joints for enhanced durability in chemically aggressive or high-moisture settings, while stainless steel cabinet construction is available for applications requiring maximum corrosion resistance.

Electrical protection and operational monitoring are integral to the design, featuring phase sequence and phase loss detection with under-voltage monitoring to prevent equipment damage from power anomalies. Both programmable thermostat and temperature alarm functions provide precise climate control and early-warning alerts when intervention is needed. The compact slim-profile design with heavy-duty steel shell and ANSI 61 gray polyester powder coating fits space-constrained installations while maintaining full NEMA Type 4 or 4X gasket integrity for leakproof operation. The unit includes a multi-layer corrugated aluminum filter to maintain internal cleanliness, with replacement filters available through Kooltronic's spare parts service. UL/CUL Listed and backed by comprehensive electrical and environmental protections, the SlimKool Series SP28 is engineered to deliver years of dependable service in industrial facilities where uptime and equipment protection are non-negotiable.