• Input Voltage Range: 80 – 264 V AC / 113 – 370 V DC
• Input Frequency Range: 47 – 63 Hz
• Rated Output Voltage: 12 V DC
• Voltage Adjustment Range: 11.4 – 12.6 V
• Rated Output Current: 26.7 A (Convection cooling) / 41.6 A (25 CFM Forced air)
• Rated Output Power: 319.5 W (Convection) / 499.2 W (25 CFM Forced air)
• Peak Power (3 sec.): 550 W
• Efficiency (Typ.): 93%
• Power Factor (Typ.): PF > 0.98 @ 115 V AC, PF > 0.94 @ 230 V AC (at full load)
• Ripple & Noise (Max.): 200 mV p-p
• Voltage Tolerance: ±2.0%
• Line Regulation: ±0.5%
• Load Regulation: ±1.0%
• Inrush Current (Cold Start): 40 A @ 115 V AC / 80 A @ 230 V AC
• Leakage Current: < 0.75 mA @ 240 V AC
• Auxiliary Outputs: 5 Vsb @ 0.6 A (convection) / 1 A (forced air); 12 V @ 0.5 A fan supply
• No-Load Power Consumption: < 0.5 W (via PS-ON control)
• Operating Temperature Range: −30 °C to +70 °C (refer to derating curve)
• Operating Humidity: 20% – 90% RH non-condensing
• Protection Functions: Short Circuit, Overload (105–135% hiccup mode, auto-recovery), Over Voltage (13.2–15.6 V, hiccup mode), Over Temperature (shut down, auto-recovery)
• Operating Altitude: Up to 5000 meters
• Form Factor / Dimensions: 5" x 3" Open Frame (127 mm x 76.2 mm x 41 mm)
• Weight: 0.46 kg
• Safety & EMC Standards: UL62368-1, TUV BS EN/EN62368-1, BS EN/EN60335-1, IEC62368-1, EAC TP TC 004, BS EN/EN55032 (Class B for Class I, Class A for Class II)
• MTBF: 1,133,600 hours min. (Telcordia SR-332)
• Warranty: 3 years

Information about the EPP-500-12

The MEAN WELL EPP-500-12 is a highly efficient 500W open-frame AC/DC power supply featuring an extremely high power density packed into a compact 5" x 3" footprint. Designed for high reliability, it delivers a nominal 12V DC output with a high efficiency of up to 93% and an extremely low no-load power consumption of under 0.5W via PS-ON control. The unit can deliver up to 319.5W under free-air convection cooling and up to 499.2W continuous (with a 550W peak for 3 seconds) when provided with 25 CFM of forced airflow. It accommodates flexible system layouts, supporting both Class I (with FG) and Class II (without FG) grounding configurations.

Equipped with primary system controls such as Remote Sense, Power Good/Power Fail signals, a 5V standby output, and a dedicated 12V fan power supply, the EPP-500-12 offers complete functionality for modern system integration. It operates reliably across a wide temperature range from −30 °C to +70 °C and up to 5,000 meters altitude. Built-in protections guard against short circuits, overloads, over-voltage, and over-temperature. Compliant with international safety standards including IEC/EN/UL 62368-1 and EN60335-1, this power supply is an ideal solution for industrial automation machinery, control systems, telecommunications, and PoE equipment. It comes backed by a 3-year manufacturer warranty.