• Output Power: 300 W
• Output Voltage: 24 V DC
• Output Current: 12.5 A
• Input Voltage Range: 67.2 – 143 V DC (continuous) / 57.6 – 154 V DC (1 sec)
• Efficiency: 91 %
• Ripple & Noise: ≤ 150 mVp-p
• Inrush Current: max. 45 A @ 110 VDC
• No-load Power Consumption: Not specified (Semi-potted)
• Operating Temperature: −40 °C to +70 °C (with derating)
• Cooling: Fanless natural 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 (L x W x H): 216 mm x 96.5 mm x 40 mm
• Weight: approx. 1190 g
• Safety & EMC Certificates: IEC 62368-1, UL 62368-1, EN 50155, EN 45545-2, EAC
• LED Indicator: Power On indicator (Green)
• Manufacturer Warranty: 3 years

Information about the MEAN WELL RSD-300D-24

The MEAN WELL RSD-300D-24 is a professional-grade 300W DC-DC converter specifically engineered for railway applications, complying with EN 50155 and EN 45545-2 fire protection standards. Its rugged semi-potted construction ensures internal components are shielded from vibration, humidity, and dust, making it an ideal power solution for rolling stock and harsh industrial machinery. The unit features a 1U low-profile 40mm design, facilitating seamless integration into modern, space-limited control cabinets while relying on fanless natural convection for efficient thermal management.

A key strength of this model is its wide 2:1 input range, which allows it to handle input voltage transients of up to 154V DC for one second without interruption to the stable 24V output. Reliability is further enhanced by a high 4000VDC I/O isolation and the use of premium 105°C long-life electrolytic capacitors, which together contribute to a high MTBF. Operating at a peak efficiency of 91%, the RSD-300D-24 minimizes energy waste, while the built-in constant current limiting circuit provides robust protection against overloads, ensuring continuous operation even in demanding environments.