Guardian DP52 480 Volt 3-PhaseNEMA 4 Air Conditioners

The Guardian DP52 is a 480-volt, 3-phase NEMA 4 air conditioning unit engineered to provide reliable, closed-loop cooling and dehumidification for sensitive electrical enclosures and industrial equipment. Its heavy-duty steel shell features a baked powder finish in ANSI 61 gray, with custom color options available, ensuring durability and professional appearance in demanding industrial environments.

This unit incorporates several advanced protective systems designed to maximize equipment lifespan and operational efficiency. The built-in condensate evaporator eliminates the need for manual condensate drainage under normal operating conditions, with an overflow drain fitting and hose included for added safety. A compressor short cycle protector prevents damage from harmful frequent restarts, particularly valuable in installations subject to variable heat loads, solar gain, or power interruptions--extending compressor life by limiting the number of starts per hour. The closed-loop cooling design isolates the enclosure interior airflow from the ambient environment, preventing warm or humid outside air from compromising the dehumidified component compartment. The epoxy-coated condenser and evaporator coils provide robust corrosion resistance, withstanding 1000 hours of salt spray per ASTM B 117 standards, though severe corrosive environments may require additional protection options.

The Guardian DP52 operates on CFC-free refrigerant for environmental compliance and features a programmable thermostat and temperature alarm system that alert operators to temperature deviations before they become critical. Multi-layer aluminum filters with adhesive coating trap particulate matter and are reusable after washing and recoating. Additional safeguards include phase sequence and phase loss detection with under-voltage monitoring to protect against electrical irregularities, an external junction box for permanent wiring connections, and full UL/CUL listing to meet applicable safety standards.