DC-DC power supply redundancy module, to be installed on DIN Rail TS-35/7.5 or 15, with single output, UL508 certified. Input voltage range oscilating between 21 VDC or 28 VDC, depending on the selected relay. 30 VDC output voltage and 20A current intensity. With power LED indicator. Cooling by free air convection. Perfect as a switching source or as a UPS for 24 VDC systems.