HEP-320 is a industrial AC/DC power supply featuring the outstanding capability to operate under aharsh environment with high dust density, humidity, vibration and altitude. The entire series is housedwith a robust aluminum case and fully potted with heat-conducted silicone. Thanks to state-of-the-art design, the working efficiency is up to 95%, enabling HEP-320, with a fanless design, perfectly work between -55and +70 under free air convection.