The NSD15-48S3 is a model of DC-DC power supply manufactured by the company Mean Well. This model is an open frame, 15 Watt, single output DC-DC converter with a wide input range and attractive pricing. It has an input voltage of 18 to 36 VDC, and an output voltage of 3.3 VDC, with a maximum output current of up to 4.5 A. The NSD15-48S3 has an efficiency of up to 84% and features galvanic isolation and over load and over voltage protections. It also features built-in EMI-filtering for FCC Class B compliance, as well as short circuit and thermal protection. This device is suitable for use in a variety of applications, including industrial control systems, telecommunications, computer systems and more.