This is the Siemens 6ES7922-5BC50-0HC0 front connector, purpose-built for the SIMATIC S7-1500 system. It provides a 40-pole screw-type termination to a 2.5 m harness of 40 individually numbered single cores, each 0.5 mm², type H05Z-K halogen-free cable. The connector mates with the 40-pole base connector 6ES7592-1AM00-0XB0 on the I/O module. Rated for 24 V nominal with a maximum of 30 V, this front connector is designed for digital I/O modules and is not rated for analog signal transmission. The screw-type terminals on the enclosure side accept the field wiring; the numbered cores simplify tracing back to the module channel.
The 40 poles match the full I/O count of a 40-channel digital module — one core per channel plus commons. The 0.5 mm² conductor cross-section is sufficient for the signal-level currents typical of S7-1500 digital inputs and outputs; it is not sized for power distribution. The 2.5 m cable length gives enough reach to route to a terminal strip or marshalling cabinet within a standard panel depth. The H05Z-K cable is halogen-free, which matters for panels that must meet low-smoke, zero-halogen requirements in public-access or safety-critical installations. The blue sheath (RAL 5010) and consecutively numbered cores (1 to 40) make channel identification straightforward during commissioning and troubleshooting. This covers typical industrial control cabinet conditions but not extended cold storage or high-heat environments near ovens or furnaces.