IEC · X

Coaxial plug and socket

A plug and socket pair with concentric inner and outer contacts, used to connect coaxial cables to equipment.

In plain English

What does Coaxial plug and socket mean?

The coaxial plug and socket shows a connector that mates both the centre conductor and the outer conductor of a coaxial cable. In power and control systems it appears on GPS antenna inputs for time synchronisation, partial-discharge and RF sensors, and video or radio links.

A simple example

The symbol does not tell you the connector series, impedance or gender convention, which vary between product families. A 50 ohm connector mated to a 75 ohm cable will work poorly, so the connector type should be stated. Outer conductor earthing through the connector body is often implicit and should be checked.

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

Read connector series and impedance in the annotation. Check how the outer conductor is earthed at the equipment. A coaxial plug and socket mates concentric contacts; an ordinary plug and socket pair mates single pins.

This particular reference

A plug and socket pair with concentric inner and outer contacts, used to connect coaxial cables to equipment. A coaxial plug and socket mates concentric contacts; an ordinary plug and socket pair mates single pins.

Terminal
An identified point where a conductor connects.
Signal
Electrical information passed between devices, rather than necessarily the main power supply.
Schematic
A drawing showing function and connections rather than physical appearance.

Read the source: AutoCAD Electrical: Connectors · IEC-60617 symbol preview directory

IEC · Coaxial plug and socket

Independent IEC-context illustration; 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 · XCoaxial plug and socket: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

The coaxial plug and socket shows a connector that mates both the centre conductor and the outer conductor of a coaxial cable. In power and control systems it appears on GPS antenna inputs for time synchronisation, partial-discharge and RF sensors, and video or radio links.

The symbol does not tell you the connector series, impedance or gender convention, which vary between product families. A 50 ohm connector mated to a 75 ohm cable will work poorly, so the connector type should be stated. Outer conductor earthing through the connector body is often implicit and should be checked.

How to read it

  • Read connector series and impedance in the annotation.
  • Check how the outer conductor is earthed at the equipment.

Information to show or reference

  • Name the connector series.
  • Match impedance to the cable.
  • Show outer conductor earthing where it matters.

A distinction that matters

A coaxial plug and socket mates concentric contacts; an ordinary plug and socket pair mates single pins.

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 of plug and jack connector forms.

Autodesk · Public reference checked 13 October 2026 · Link only

IEC-60617 symbol preview directory

Public directory of IEC-oriented symbol families.

Autodesk · Public reference checked 13 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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