The rugged industrial quality AC-DC power supplies use field proven topology to generate the required output power. Each unit is enclosed in a robust IP66-rated waterproof, die cast aluminum package. Cooling is achieved by internal conduction to the walls of the IP66 enclosure with additional convection via the outside surface. Cooling is further enhanced by the heatsink assembly block attached to the under-surface of the unit. The heatsink frame has mounting flanges which also allow for mounting on uneven and thermally non-conductive surfaces. The input and output are via sealed cable glands, circular connectors or custom connections. The internal board is ruggedized for immunity to high levels of shock and vibration. An optional built-in redundancy diode allows for parallel and N+1 operation. Full electronic protection, low component count, large design headroom, and the use of components with established reliability contribute to high MTBF. The unit is manufactured at our plant under strict quality control.