Technical Information & Details for the MEAN WELL RSD-300F-48 Power Supply
- Output Power: 300 W
- Output Voltage: 48 V DC
- Output Current: 6.3 A
- Input Voltage Range: 67.2 – 143 V DC
- Efficiency: 91 %
- Ripple & Noise: 200 mVp-p
- Input Current: 3.1 A @ 110 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-300F-48
The MEAN WELL RSD-300F-48 is a high-voltage 300W DC-DC converter meticulously engineered for railway systems and telecommunication infrastructure. Providing a stable 48V DC output, this unit is ideal for powering remote sensors, communication hubs, and specialized industrial machinery that requires higher voltage to minimize line loss. A standout feature of this model is its exceptional thermal management; despite the high power density in a compact 1U profile, it maintains a peak efficiency of 91%, allowing for reliable operation via natural air convection without the need for mechanical cooling fans.
Built to endure the harshest operational stresses, the RSD-300F-48 is compliant with the EN50155 railway standard and features a ruggedized, semi-potted design that protects internal components from moisture, dust, and vibrations up to 5G. The 4000VDC reinforced isolation provides a critical safety buffer, shielding sensitive downstream electronics from high-voltage surges and transients common in heavy industrial environments. With its wide operating temperature range and comprehensive protection suite—including input reverse polarity protection—this power supply is a premier, maintenance-free solution for mission-critical applications where long-term reliability is non-negotiable.