Siemens FDB221-AA Addressable Detector Socket (with DBZ1190-AA Micro Terminal)

FDB221-AA is the socket that forms the base where the detector sits on Siemens addressable fire detection lines and is supplied under order number A5Q00012741. Its body is identical to the FDB221 without connector; the only difference is that one DBZ1190-AA orange micro terminal comes ready in the box, allowing the thin addressable line conductors with 0.28…0.5 mm² cross-section to be terminated without waiting for additional parts. The socket's own spring-loaded terminals work with 0.2…1.5 mm² cross-section; the white (approximately RAL 9010) Ø100 mm body sits in mounting hole spacing between 46 and 79 mm and accepts both subsurface conduits and surface cable entry up to Ø6 mm. The socket alone has a height of 22 mm, reaching 54 mm when the detector is mounted, and weighs 0.029 kg. Before ordering, it is useful to distinguish between two codes: for installations that do not require a micro terminal, the terminal-free FDB221 is sufficient; the protection class and operating temperature depend not on the socket but on the data sheet of the detector mounted on top.