DURACOMM's HE1U-1248 is a heavy duty AC - DC 750 W power supply in a 1 U chassis. The HE1U-1248 comes with power factor correction, and four layers of protection against overload, over voltage, over temperature, and short circuit. The internal power supply has on / off remote control, and DC-OK connected to the HE1U-1248 rear terminal strip.