SIMATIC S7-300 Front Connector 20-pin, Spring Terminal, Package of 100
Front connector for signal modules, 20-pole, spring-loaded contacts, 100 units per packing unit. Mechanically coded to prevent wiring errors when replacing modules. [VERIFIED via Siemens official datasheet]
Technical Specifications
| Product Type | Front Connector (Spring-Loaded) |
| Poles | 20-pole |
| Pack Quantity | 100 units |
| Feature | Mechanically coded on first insertion to prevent wiring errors during module replacement |
Typical Applications
Used to connect field sensors and actuators to S7-300 I/O modules while preserving the wiring during module replacement (‘permanent wiring’) — only the connector itself is unplugged when swapping a module, avoiding the time-intensive rewiring of all individual wires. The mechanical coding feature specifically prevents accidentally plugging a wired connector into the wrong module type.
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