What it is and where it fits
The Siemens 3RK1400-1KG02-0WB1-ZX95 is an AS-i busbar extender that adds 2 electronic inputs and 1 electronic output to a 60 mm busbar system, running on 24 V DC. It snaps onto the busbar inside a control panel, extending the AS-Interface network to a local cluster of sensors and actuators without running separate cables back to the gateway.