In addition to the usual features of DIN rail power supplies, such as output voltage adjustment, the DRA-40 series also includes output current adjustment. This allows the output current to be set via an external voltage of 1-10V DC, PWM signal, or resistor, providing flexibility to the user. They can be mounted on TS-35 / 7.5 or TS-35/15 DIN rails, have an input voltage range of 90-264V AC, and offer 12 or 24V DC output voltage. Thanks to their high efficiency of up to 87%, the power supplies can operate even at ambient temperatures ranging from -30 to +70°C with simple air convection. Additional features include short-circuit, overload, and over-voltage protection, as well as a power-on LED indicator. The power supplies are certified according to UL, CUL, CB, TUV, and CE and meet the requirements of IEC60950-1 Limited Power Source (LPS). Suitable applications include machine testing systems and system assembly with LED light sources.