• Output Power: 420 W
• Output Voltage: 12 V DC
• Output Current: 35 A
• Input Voltage Range: 16.8 – 33.6 V DC (24V Nominal)
• Efficiency: 93%
• Ripple & Noise: ≤ 100 mVp-p
• Inrush Current: 30 A (Resistor suppressed with Relay bypass)
• Operating Temperature: −40 °C to +80 °C
• Cooling: Fanless design, half encapsulated, free air convection
• Protection Functions: Short circuit, Overload, Over voltage, Over temperature, Input reverse polarity, Input under voltage
• Overvoltage Category: OVC II
• Isolation Voltage: 4KV DC I/O isolation (Reinforced)
• Dimensions (L x W x H): 237 mm x 100 mm x 41 mm
• Weight: 1.45 kg
• Safety & EMC Certificates: IEC62368-1, UL62368-1, AS/NZS62368-1, EN50155, EN45545-2, EAC
• LED Indicator: Power On Indicator
• Manufacturer Warranty: 3 Years

Information about the MEAN WELL RSD-500B-12

The MEAN WELL RSD-500B-12 is a high-performance 500W enclosed type DC-DC converter specifically engineered to meet the stringent requirements of railway applications and harsh industrial environments. This model features a 1U low profile of 41mm and a 2:1 wide input range, making it exceptionally versatile for transportation systems utilizing 24V nominal battery voltages. Its fanless design and semi-potted silicone interior provide superior resistance against high vibration, dust, and moisture, while also ensuring silent operation and a remarkably long service life in challenging conditions. The unit is fully compliant with BS EN/EN50155 and BS EN/EN45545-2 standards, guaranteeing safety regarding fire protection and electronic performance for rolling stock and railside facilities.

Beyond its physical durability, the RSD-500B-12 delivers high efficiency up to 93% and features advanced 4KVdc reinforced I/O isolation to ensure maximum safety for sensitive electronic equipment. It is equipped with an array of sophisticated protection mechanisms, including input reverse polarity protection via MOSFET and active inrush current suppression to prevent system disturbances during startup. The wide operating temperature range of -40 to +80 °C allows for reliable deployment in extreme climates, from desert heat to freezing environments. This converter is the ideal choice for bus, tram, and metro systems, as well as high-reliability industrial automation, telecommunications, and wireless network infrastructures where downtime is not an option.