• Output Power: 460.8 W
• Output Voltage: 24 V DC
• Output Current: 19.2 A
• Input Voltage Range: 67.2 – 143 V DC (110V Nominal)
• Efficiency: 92%
• Ripple & Noise: ≤ 150 mVp-p
• Inrush Current: 30 A (Resistor suppressed with Relay bypass)
• Operating Temperature: −40 °C to +80 °C
• Cooling: Fanless design, half encapsulated, free air convection
• Protection Functions: Short circuit, Overload, Over voltage, Over temperature, Input reverse polarity, Input under voltage
• Overvoltage Category: OVC II
• Isolation Voltage: 4KV DC I/O isolation (Reinforced)
• Dimensions (L x W x H): 237 mm x 100 mm x 41 mm
• Weight: 1.45 kg
• Safety & EMC Certificates: IEC62368-1, UL62368-1, AS/NZS62368-1, EN50155, EN45545-2, EAC
• LED Indicator: Power On Indicator
• Manufacturer Warranty: 3 Years

Information about the MEAN WELL RSD-500D-24

The MEAN WELL RSD-500D-24 is a specialized 500W-class DC-DC converter designed specifically for railway infrastructures and high-voltage battery systems. As a "D" type model, it is optimized for a 110V DC nominal input, making it perfectly suited for the power grids found in modern rolling stock and subway systems. The unit features a slim 1U low profile of 41mm, which allows for high-density mounting in standard cabinets or integration into compact onboard electronics. Its fanless design and semi-encapsulated construction utilize a high-quality silicone potting compound to protect internal components from heavy vibration, dust, and humidity while ensuring efficient thermal management via natural air convection. Full compliance with BS EN/EN50155 and BS EN/EN45545-2 standards guarantees that it meets the most rigorous safety and fire protection requirements for global rail transport.

Beyond its physical durability, the RSD-500D-24 offers superior electrical performance with an efficiency of 92% and a reinforced 4KVdc I/O isolation to safeguard sensitive communication and control equipment. The converter is equipped with advanced safety features, including MOSFET-based input reverse polarity protection and active inrush current suppression to prevent damage during high-voltage startup cycles. Capable of operating in extreme temperatures from -40 to +80 °C and at altitudes up to 5000 meters, this power supply is an ideal solution for metro systems, tramways, and demanding industrial automation. Its combination of high power density and reliable DC-DC conversion makes it a critical component for systems where failure is not an option and environmental conditions are exceptionally harsh.