MEAN WELL RSD 300 273.6W Railway Certified Regulated Isolated DC-DC Converter 48V DC Output Surface Mount RSD-300B-48

MEAN WELL RSD-300B-48 is a 273.6W regulated and isolated DC-DC converter designed for railway and vehicle applications. It delivers a stable 48V DC output voltage with a maximum output power of 273.6W. The converter supports a wide input voltage range from 16.8V to 31.2V DC, allowing operation from various DC power sources.

This series complies with stringent railway certifications such as EN50155, IEC60571, IEC61373, and EN50121-3-2, ensuring suitability for harsh environments and high reliability in transportation systems including trains, metros, buses, and vessels. The device withstands shock and vibration shocks up to 5G and operates reliably over a temperature range of -40°C to +55°C.

The RSD-300 features a half encapsulated surface mount package which provides excellent protection against moisture, dust, and mechanical damage while facilitating effective heat dissipation through free air convection cooling, enabling fanless operation. It is equipped with multiple protective functions including short circuit, overload, output over voltage, over temperature, and reverse polarity input protection to prevent damage in adverse conditions.

The product incorporates 4000V DC isolation between input and output terminals, contributing to operational safety and noise immunity. With an efficiency rating of 91.5%, the converter reduces energy loss and supports reliable power management in industrial and transportation electronics.

Typical uses include railway electronics, metro transit systems, buses, telecom equipment, DC UPS systems, and security systems in demanding environments. The built-in current limiting circuit and constant current control provide stable operation under varied loads. This model comes with a power LED indicator and has been 100% burn-in tested for full load reliability.

High efficiency up to 91.5% reduces energy waste. Wide operating input voltage range from 16.8Vdc to 31.2Vdc accommodates diverse scenarios. Compliance with railway standards EN50155, IEC60571 ensures suitability for vehicle-mounted applications.

Robust protective features guard against common faults without device damage. Half encapsulated surface mount design offers PCB protection and thermal management. 5G anti-vibration rating for reliable performance in harsh mechanical environments.

Operates reliably in temperatures from -40°C to 55°C. Suitable for railway, metro systems, buses, telecom, and security system applications. Built-in constant current limiting and LED power indicator enhance operational reliability.

Explore the wide range of DC/DC Converters from MEAN WELL on EnvMart for efficient and reliable power solutions in industrial and transportation sectors.