• Output Power: 210 W
• Output Voltage: 5 V DC
• Output Current: 42 A
• Input Voltage Range: 33.6 – 62.4 V DC
• Efficiency: 88 %
• Ripple & Noise: 100 mVp-p
• Input Current: 5.5 A @ 48 VDC
• No-load Power Consumption: < 1.5 W
• Operating Temperature: -40 °C to +70 °C
• Cooling: Free air convection
• Protection Functions: Short circuit, Overload, Over voltage, Over temperature, Input reverse polarity
• Overvoltage Category: OVC II
• Isolation Voltage: 4000 V DC between input and output
• Dimensions (H x W x D): 40 mm x 216 mm x 114 mm
• Weight: approx. 1000 g
• Safety & EMC Certificates: EN50155, IEC60571, EN45545-2, EAC, CE
• LED Indicator: Power On Indicator
• Manufacturer Warranty: 3 Years

Information about the MEAN WELL RSD-300C-5

The MEAN WELL RSD-300C-5 is a high-performance 210W DC-DC converter specifically engineered for the 48V nominal battery systems common in railway and telecommunication sectors. Operating within a 33.6V to 62.4V DC input range, this unit provides a highly stabilized 5V output with a massive 42A current capacity. Its primary strength lies in its ultra-low profile 1U height, which allows for seamless integration into high-density rack systems and shallow control cabinets where vertical space is severely restricted. Despite the high output current, the unit maintains 88% efficiency, ensuring that thermal waste is kept to a minimum during heavy-duty industrial cycles.

Designed for longevity in harsh operational environments, the RSD-300C-5 features a semi-potted internal structure that offers superior protection against dust, humidity, and mechanical vibrations up to 5G. It is fully compliant with the EN50155 railway standard and the EN45545-2 fire protection standard, guaranteeing safety and reliability for rolling stock and transit infrastructure. The 4000VDC reinforced isolation provides a critical safety barrier between the primary DC bus and sensitive logic-level electronics. With a fanless architecture that relies on natural air convection, this converter offers a maintenance-free power solution for mission-critical signaling, communication hubs, and automated industrial control systems.