IEC · X

Additional connector pin

A further pin of a connector already tagged elsewhere, drawn without repeating the connector body or tag.

In plain English

What does Additional connector pin mean?

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.

A simple example

Readers should treat every child pin as part of the parent connector, so separating the connector disconnects all of them. The child symbol does not repeat the connector type or rating, which must be read from the parent. Pin numbers on child symbols must still be unique within the connector.

Identify the device and formRead the connections and stateCheck the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

What the drawings help you do

Find the parent connector tag for each child pin. Remember all child pins separate when the connector is unplugged. An additional connector pin is a child of a tagged connector; a standalone plug and socket pair is a connector in its own right.

This particular reference

A further pin of a connector already tagged elsewhere, drawn without repeating the connector body or tag. An additional connector pin is a child of a tagged connector; a standalone plug and socket pair is a connector in its own right.

Terminal
An identified point where a conductor connects.
Rating
A value stating the conditions for which equipment is specified.
Schematic
A drawing showing function and connections rather than physical appearance.

Read the source: AutoCAD Electrical: Connectors · Autodesk IEEE Symbol Preview — Connectors - No Wirenumber Changes

IEC · 2nd+ Plug/Jack child form

Autodesk IEC-60617 Symbol Preview: Connectors - No Wirenumber Changes; vendor family reference, not certified IEC geometry.

Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.

Schematic · XAdditional connector pin: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

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.

Readers should treat every child pin as part of the parent connector, so separating the connector disconnects all of them. The child symbol does not repeat the connector type or rating, which must be read from the parent. Pin numbers on child symbols must still be unique within the connector.

How to read it

  • Find the parent connector tag for each child pin.
  • Remember all child pins separate when the connector is unplugged.

Information to show or reference

  • Cross-reference child pins to the parent.
  • Keep pin numbers unique.
  • State connector data only on the parent.

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.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

AutoCAD Electrical: Connectors

Public IEC-oriented preview listing 2nd+ plug and jack forms.

Autodesk · Public reference checked 13 October 2026 · Link only

Autodesk IEEE Symbol Preview — Connectors - No Wirenumber Changes

Public IEEE-oriented preview of the same connector family.

Autodesk · Public reference checked 14 October 2026 · Link only

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 28 October 2026

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