• Output Power: 210 W
• Output Voltage: 5 V DC
• Output Current: 42 A
• Input Voltage Range: 16.8 – 40 V DC
• Efficiency: 86 %
• Ripple & Noise: 100 mVp-p
• Input Current: 13.5 A @ 24 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-300B-5

The MEAN WELL RSD-300B-5 is a high-performance 210W DC-DC converter specifically optimized for low-voltage DC systems, featuring an input range of 16.8V to 40V DC. This "B" series variant is the ideal choice for 24V nominal battery architectures found in railway rolling stock and heavy-duty industrial vehicles. A standout characteristic of this power supply is its ability to deliver a massive 42A of stabilized 5V output, making it a powerhouse for high-current logic circuits, onboard infotainment systems, and complex sensor arrays. Its compact 1U low-profile design ensures that it can be integrated into shallow cabinets or crowded control racks where space efficiency is a critical requirement.

Engineered to thrive in harsh environments, the RSD-300B-5 is built with a semi-potted internal structure that provides superior protection against moisture, dust, and mechanical shocks. It is fully compliant with the EN50155 railway standard and boasts a 5G anti-vibration capability, ensuring uninterrupted service even under constant motion. The unit operates via natural air convection cooling, eliminating the need for fans and significantly reducing the risk of mechanical failure. With 4000VDC reinforced isolation and a comprehensive safety suite including input reverse polarity protection, this converter provides a rugged, safe, and maintenance-free 5V power solution for mission-critical transportation and automation infrastructure.