The present invention is directed to a power control device. The device includes an interchangeable user interface assembly includes a frame member having a plurality of connector elements configured to mate with a plurality of frame connection apertures. The frame member is removable from the device heat sink without any tools. The interchangeable user interface assembly includes an interface paddle rotatably coupled to the frame member and detached relative to the device's rocker switch such that the interface paddle slidably moves relative to the rocker switch with at least one degree of freedom during a rotational movement, the user interface assembly further including an interface dimmer movably disposed within the frame member and coupled to the device's dimmer actuator.