Sola HD SDN 40-24-100C is a 40-A, single-phase model with a small footprint and high efficiency that delivers the same capacity as the largest SolaHD three-phase model. It features visual diagnostic LEDs to indicate I/O status, and is equipped with standard screw terminal connections and an industrial-grade metal outer case that dissipates heat and delivers full power from -25 °C to +60 °C.