• Output Power: 321.3 W
• Output Voltage: 54 V DC (adjustable from 49 – 58 V)
• Output Current: 5.95 A (adjustable from 2.97 – 5.95 A)
• Input Voltage Range: 90 – 264 V AC / 128 – 370 V DC, 47 – 63 Hz
• Efficiency: 95%
• Ripple & Noise: ≤ 350 mVp-p
• Inrush Current: max. 70 A @ 230 VAC (cold start)
• No-load Power Consumption: < 0.5 W
• Operating Temperature: −55 °C to +70 °C
• Cooling: fanless free air convection
• Protections: Short circuit, Overload (hiccup mode), Over voltage, Over temperature
• Protection Rating / Enclosure: IP65, aluminum case fully potted with heat-conductive silicone
• Vibration Resistance: Withstands 10G vibration test
• Surge Immunity: 6 kV surge immunity level
• Isolation Voltage: 3750 V AC input-to-output
• Dimensions (L x W x H): 252 mm x 90 mm x 43.8 mm
• Weight: approx. 1.88 kg
• Safety & EMC Standards: UL62368-1, IEC62368-1, IP65, EAC, CB, CE
• Warranty: 6 years

Information about MEAN WELL HEP-320-54A

Tailored for high-reliability 54 V DC applications, the MEAN WELL HEP-320-54A delivers ultra-stable power output in severe outdoor and heavy-industrial installations. Encased in a rugged aluminum enclosure sealed to an IP65 rating, it isolates internal components from dust, dirt, and water ingress, while fanless free air convection ensures uninterrupted performance across extreme temperatures from −55 °C to +70 °C. Outstanding physical durability is proven by its 10G vibration testing resistance combined with 6 kV surge protection, making it an optimal power source for Power over Ethernet (PoE) systems, remote communications towers, and heavy equipment facilities. Highlighting its long-term reliability and premium construction, this unit is backed by a comprehensive 6-year warranty.