Rhino Pro (DIN-rail performance series) PSN and PSD series switching power supplies are available in single- and three-phase input units and feature a universal ac input voltage range (one-phase units), a built-in constant current circuit for charging applications (three-phase units) and a power boost of 150% for up to 7 seconds. Current output is available from 3.4 to 40 A at 24 Vdc. The advanced power boost (APB) feature protects the system and ensures continuing operation when a large inrush current is detected due to faulty load on a multiple load connection. A built-in dc OK contact and dc OK/overload LED indicator are common on both series.