SDN-C DIN Rail Power Supplies SolaHD SDN-C DIN Rail Power Supplies combine high efficiency and compact size with visual diagnostic LEDs. The line offers a wide variety of power supplies ranging from 5A to 40A in both single phase and three phase models. Features include Sag Immunity, Power Factor Correction, universal voltage input, and adjustable output voltage. With an operating temperature from -25°C to +60°C and parallel operation capability, SDN-C units are suitable for a variety of industrial applications.