What this front connector does in the S7-400 rack
The 6ES7922-4BC50-5AE0: This is a pre-wired 48-pole front connector for SIMATIC S7-400 MS/MSP/MR units, terminated with 46 individual single cores in a 2.5 m cable bundle. It mates with the 6ES7492-1CL00-0AA0 connector on the module face, so you pull the module, land the connector, and dress the wires back to the terminal strip without punching down each core at the module. Rated at 24 V with a maximum of 30 V on the line, this connector handles the signal-level currents typical of S7-400 digital I/O modules — no analog signal transmission here, just 46 channels of 24 VDC digital in or out. Each core is 0.5 mm² (roughly 20 AWG), H05V-K PVC insulated, and numbered consecutively from 3 to 48 so the field wiring map matches the module channel assignment without guesswork.
Crimp termination and panel routing
The connector uses crimp termination — you strip the core, crimp the contact, and push it into the housing. No screw terminals on the module side, so the connection is vibration-resistant and consistent across all 48 positions. The cable sheath is blue (RAL 5010), outer diameter 2.2 mm per bundled single core. Sold in a VPE of 5 units — order one position to get five connectors, enough for a full rack or spares for the next line change.