These power supplies are designed for used in the servo motor and stepper motor drive and high over loaded applications. They will work on both standard 115V and 230V at 50Hz or 60Hz. This toroidal transformer has heavier gauge wires then the normal requirement to avoid the copper lost during the full load output and over load output. The power supply has a flexible add on option that allows more outputs as needed in the future. The main output has 2 large capacitors to guaranty the output ripple to minimum. The chassis is made of 3/32" thick aluminum for strength and heat dissipation from rectifier. It will work continuously without any over heat problem.