The rugged industrial quality AC-DC power supplies utilize field proven topology to generate the required output power. The units are packaged in rugged, waterproof, IP66 die cast aluminum enclosures. The input and output are via sealed cable glands, circular connectors or custom connections. The internal boards are ruggedized and conformal coated for increased immunity to high levels of shock and vibration. Cooling is by internal conduction to the walls of the IP66 enclosure and by baseplate to an external chassis or cabinet wall, and additional convection via the outside surface. This enables operation within a wide temperature range for full specification. If installed on a heat-sinking surface, cooling is further enhanced and the power supplies achieve higher output power. High frequency conversion enables compact construction and high efficiency. Full electronic protection, generous design headroom and the exclusive use of components with established reliability also contribute to high MTBF. The unit is manufactured at our plant under strict quality control. Customized versions are available. The design is suitable for operation in transportation, mining, marine, oil rig, military and other severe environments.