The DC-DC Converter provides clean 12 VDC power suitable for 24V solenoids, relays and other electrical systems. Isolation is provided. For operation under the most harsh and demanding conditions, the IP67 rated unit is fully sealed and potted in an enclosure to protect against moisture, shock and vibration. Power from a battery or other source of 48 VDC is converted to a 12 VDC regulated output. The unit has a high current output capability of 10 Amps nominal. The device manages heat dissipation and requires no forced cooling systems. Short circuit and reverse polarity protection are provided. The compact unit is designed with extremely rugged surge and transient suppression in addition to sustained over/under voltage protection. With a nameplate rating of 240 VA of output power, the DC-DC Converter features proprietary dual-phase topology for a high efficiency of 92%.