S7-300 front connector with single cores
The Siemens 6ES7922-3BD20-5AB0 is a pre-wired front connector for SIMATIC S7-300 digital I/O modules, delivering 20 individually numbered single cores (H05V-K, 0.5 mm²) terminated at the module end via the matching 20-pole screw-type connector 6ES7392-1AJ00-0AA0. The 3.2 m cable length gives enough reach to route to a field junction box or terminal strip inside a standard control cabinet without splicing.
Voltage rating and signal compatibility
Rated 24 V with a maximum of 30 V — this is the insulation voltage limit for the cable and connector system, not a functional signal level; it matches the standard 24 VDC field supply used across S7-300 digital I/O modules. Designed for digital signal transmission only; the 0.5 mm² conductor cross-section and PVC sheath (RAL 5010 blue) are adequate for the 20 mA typical sink current per channel of an S7-300 input or output module.