• Output Power: 321 W (Free air convection) / 499.2 W (With 25 CFM forced air)
• Output Voltage: 18 V DC
• Output Current: 17.8 A (Convection) / 27.8 A (With 25 CFM fan)
• Voltage Adj. Range: 17.1 – 18.9 V DC (Main output)
• Voltage Tolerance: ±1.0%
• Input Voltage Range: 80 – 264 V AC / 113 – 370 V DC
• Frequency Range: 47 – 63 Hz
• Efficiency: 94% (typ.)
• Power Factor: PF > 0.98 / 115 VAC (PF > 0.94 / 230 VAC at full load)
• Ripple & Noise: 200 mVp-p (max.)
• Auxiliary Power (AUX): 5 V @ 0.6 A without fan (1 A with 25 CFM fan, tolerance ±2%, ripple 120 mVp-p max.); 12 V @ 0.5 A for driving a fan
• No Load Power Consumption: < 0.5 W (via PS-ON control)
• Input Current: typ. 5.8 A / 115 VAC, 2.9 A / 230 VAC
• Setup, Rise, Hold-up Time: 1500 ms, 30 ms / 115 VAC; 1000 ms, 30 ms / 230 VAC; Hold-up 10 ms at full load
• Operating Temperature: −30 °C to +70 °C (refer to derating curve)
• Operating Humidity: 20 – 90% RH non-condensing
• Protections: Short circuit, Overload (105 – 135%, hiccup mode, auto-recovery), Overvoltage (19.8 – 23.4 V, hiccup mode, auto-recovery), Over temperature (shut down o/p voltage, auto-recovery)
• Isolation Voltage: I/P-O/P: 3.0 kVAC, I/P-FG: 2.0 kVAC, O/P-FG: 0.5 kVAC
• Dimensions (L x W x H): 127 mm x 76.2 mm x 41 mm (5" x 3" compact size)
• Weight: approx. 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 (Conduction), BS EN/EN61000-3-2, -3, BS EN/EN61000-4-2,3,4,5,6,8,11
• Advanced Functions: Power Good / Power Fail signal, Built-in remote sense function, PS-ON input signal for remote ON/OFF
• Manufacturer Warranty: 3 Years

Information on MEAN WELL EPP-500-18

The MEAN WELL EPP-500-18 is a highly reliable, 500 W open-frame AC/DC power supply built into a compact 5" x 3" footprint featuring high power density and an active PFC function. Designed for versatile installation in both Class I (with FG) and Class II (no FG) systems, it operates across a universal input range of 80 to 264 V AC, delivers a peak power of up to 550 W for 3 seconds, and provides a regulated single 18 V DC output. It provides up to 17.8 A (321 W) under free air convection cooling, and up to 27.8 A (499.2 W) when provided with 25 CFM of forced air cooling.

Featuring an exceptional efficiency rating of up to 94% and an extremely low no-load power consumption below 0.5 W via PS-ON control, the EPP-500-18 supports energy-efficient system design. It includes advanced built-in features such as a 5V standby output, a 12V fan supply, Power Good/Fail signals, and a remote sense function. Comprehensive protections against short circuit, overload, overvoltage, and overtemperature are integrated as standard. Fully compliant with international safety and EMC standards, the module includes a 3-year manufacturer warranty.