DIN rail mount DC power supplies have two small ledges on the back that secure around the ridges of a DIN rail. These power supplies are ideal for industrial and commercial applications like conveying, food and beverage, and oil and gas.

Open chassis DC power supplies enclose only part of the components to allow for heat dissipation. These power supplies are not finger safe and are meant to be affixed or placed inside a PCU, electrical, or other enclosure.

Wall-mount DC power supplies feature a closed design to offer protection and allow mounting outside a control cabinet, potentially saving space. They can be used in applications like signal processing and industrial control.