Siemens 6ES7922-3BC50-0AB0 is a TOPconnect front connector for SIMATIC S7-300 I/O systems, providing a 20-pole interface for S7-300 front-mounted digital I/O modules. Each conductor is 0.5 mm2 and consists of single-core H05V-K wires, and the assembly uses a screw-terminal version with a total length of 2.5 meters. Sold as a single unit, this front connector functions as a spare part within the S7-300 TOPconnect family, enabling straightforward replacement and consistent wiring in installations.
