Guardian DP52 480 Volt 3-PhaseNEMA 4 Legacy Air Conditioners

The Guardian DP52 is a robust 480-volt, 3-phase NEMA 4 legacy air conditioning unit engineered to maintain precise environmental control in demanding industrial and commercial electrical enclosures. Its heavy-duty steel shell features a baked powder finish in ANSI 61 gray, with custom color options available to meet specific facility requirements, while the UL/CUL listing ensures compliance with stringent safety and performance standards.

This unit incorporates advanced cooling technologies designed to minimize maintenance and extend operational life. The built-in condensate evaporator eliminates the need for manual condensate drainage under normal operating conditions, and an overflow drain fitting with hose is included for situations involving extremely high humidity. The closed-loop cooling system isolates the enclosure interior airflow from ambient conditions, preventing warm air from invading the dehumidified component compartment and ensuring consistent cooling performance. The system uses CFC-free R134a refrigerant, meeting environmental regulations while delivering reliable heat rejection. A compressor short cycle protector prevents damage from frequent restarts caused by fluctuating heat loads, power interruptions, or low-capacity utilization, thereby extending compressor life--particularly valuable in installations subject to solar gain or anticipated future equipment additions.

The Guardian DP52 features epoxy-coated condenser and evaporator coils rated to withstand 1000 hours of salt spray per ASTM B 117, providing enhanced corrosion resistance in challenging environments. A phase sequence and phase loss detector with under-voltage monitoring protects three-phase electrical systems from imbalance conditions. Programmable thermostat and temperature alarm functions enable precise climate management and early warning alerts. Multi-layer aluminum grid filters with non-drying adhesive coating trap particulates and are reuseable; replacement filters are available as needed. An external junction box accommodates permanent wiring connections, and the unit operates with full NEMA 4 rating maintained per UL50.