Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

IEC

Additional connector pin

On schematics a connector often has pins scattered across several circuits and sheets. The first pin carries the connector tag and body, and each additional pin is drawn with a lighter child symbol that refers back to it. This avoids drawing the same connector several times with conflicting tags.

Drawing use: Schematic
Application: Connections & wiring
Reference family: IEC / Manufacturer
Form evidence: 2nd+ Plug/Jack child form. Autodesk IEC-60617 Symbol Preview: Connectors - No Wirenumber Changes; vendor family reference, not certified IEC geometry.

A distinction that matters

An additional connector pin is a child of a tagged connector; a standalone plug and socket pair is a connector in its own right.

Full reference

IEC

Multi-pole plug and socket

The multi-pole form draws each contact of a connector as a pin and socket pair, grouped together and tied by a common outline or mechanical link to show they belong to one connector body. It is used for machine harness connectors, removable control modules and multi-pin field connectors on instruments.

Drawing use: Schematic
Application: Connections & wiring
Reference family: IEC
Form evidence: Multi-pole plug and socket, multi-line form. Autodesk IEC-60617 Symbol Preview: Connectors - No Wirenumber Changes; vendor family reference, not certified IEC geometry.

A distinction that matters

A multi-pole plug and socket draws each pin; the one-line connector representation shows the whole connector as one mark.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.