SIEMENS 8WD4428-0BA Description Description SIEMENS SIGNALLING COLUMN AS-INTERFACE ELEMENT W/O EXTERNAL AUX. VOLTAGE, Related products SIEMENS 1FN3300-4SA00-0AA0 SIEMENS 1FT5072-0AC01-1-Z SIEMENS 1FK7042-5AF71-1EA0 SIEMENS 1FN1910-0AA20-1AA0 SIEMENS 1FK7083-5AF71-1EB3 SIEMENS 1FK7063-5AF71-1FG2
