The isolated DC-DC converters provide clean 24 VDC output power suitable for solenoids, relays, and other electrical systems. For operation under the most harsh and demanding conditions, the IP67 rated units are encapsulated in an enclosure to protect against moisture, shock, and vibration. Power from a battery or other source at 110 VDC nominal, 96 VDC nominal, or 72 VDC nominal is converted to a 24 VDC regulated output. Isolation is provided for the input and the output. The railway power supplies manage heat dissipation and requires no forced cooling systems. Short circuit and reverse polarity protection are provided. The units are designed with extremely rugged surge and transient suppression in addition to sustained over/under voltage protection. With a nameplate rating of 240 Watts of output power, the 72VDC/96VDC/110VDC to 24VDC Power Converters feature proprietary dual-phase topology for a high efficiency.