The Mean Well RS-50-12 has a rated output of 50W at 12V DC. This range of switch mode power supplies offer high efficiency DC power in a compact enclosure. They are designed to be installed within a secondary cabinet as the 240V input terminals are exposed. The mesh casing allows free air cooling without the need for fans (-25° to +70°C working temperature). The low profile casing makes them ideal for mounting into 1RU rack cases. Switch mode power supplies offer several significant advantages over traditional linear transformer power supplies. They are far more efficient than their linear counterparts. As they do not use power or mains transformers the equivalent power supply weighs considerably less than traditional types. Physical size is also reduced. Features Universal AC input / Full range Protections: Short circuit / Overload / Over voltage Cooling by free air convection LED indicator for power on 100% full load burn-in test All using 105oC long life electrolytic capacitors Withstand 300VAC surge input for 5 second High operating temperature up to 70 Withstand 5G vibration test High efficiency, long life and high reliability