• Output Power: 420 W
• Output Voltage: 12 V DC
• Output Current: 35 A
• Input Voltage Range: 33.6 – 67.2 V DC (48V Nominal)
• Efficiency: 93%
• Ripple & Noise: ≤ 100 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-500C-12

The MEAN WELL RSD-500C-12 is a high-reliability 500W-class DC-DC converter specifically developed for rolling stock and harsh industrial environments. As part of the "C" input voltage variant, this model is optimized for 48V nominal battery systems, offering a wide 2:1 input range of 33.6V to 67.2V DC. Its ultra-slim 1U low profile of 41mm makes it an ideal candidate for space-constrained installations in railway cabinets, telecommunications racks, and automated factory floors. The unit is strictly compliant with EN50155 and EN45545-2 railway standards, ensuring it can withstand significant mechanical shock, constant vibration, and meet stringent fire safety requirements for passenger transport systems.

This converter features a fanless design with a half-encapsulated interior using thermally conductive silicone potting, which facilitates efficient heat dissipation via natural air convection while protecting sensitive electronics from dust and moisture. With a high efficiency of 93% and 4KVdc reinforced I/O isolation, the RSD-500C-12 provides a stable and safe 12V DC output for mission-critical equipment. Advanced security features such as MOSFET-based input reverse polarity protection and active inrush current suppression ensure a smooth system startup. Capable of operating in a wide temperature range from -40 to +80 °C, it is perfectly suited for use in trams, metros, wireless network base stations, and demanding industrial control applications.