SIEMENS 8WD4428-0BA Description Description SIEMENS SIGNALLING COLUMN AS-INTERFACE ELEMENT W/O EXTERNAL AUX. VOLTAGE, Related products SIEMENS 1FN3300-4SA00-0AA0 SIEMENS 1FK7022-5AK71-1DA0 SIEMENS 1FK6042-6AF71-1TB0 SIEMENS 1FK6032-6AK71-1TG0 SIEMENS 1FK6060-6AF71-1TG0 SIEMENS 1790L811A
