Siemens 6FC5247-0AA00-0AA3 NCU-Box Housing 13A

Siemens 6FC5247-0AA00-0AA3 SINUMERIK 840D/DE NCU Box housing, 13A, is a sheet-metal enclosure that serves as the mechanical mounting carrier for the NCU assembly in SINUMERIK 840D/DE controls, designed for installation of NCU 561.2/561.3/561.4, 571/571.2/571.3/571.4, 572/572.2/572.3, and 573.2/573.3/573.4/573.5 modules, and is supplied as a complete NCU Box including a power unit, battery and fan; the 13A variant specifies this housing configuration and lists an AC input of 57 V with a 20 kHz power circuit. The NCU Box is defined in Siemens documentation as the Baugruppenträger der NCU-Baugruppe—a sheet-metal housing with integrated guide rails to accommodate the NCU subassemblies—bearing the order number 6FC5247-0AA00-0AA3. Industry listings corroborate the 13A NCU Box as the SINUMERIK 840D/DE enclosure for NCU installations with the same power, battery and cooling components, confirming its role as the protective housing for the NCU system.