# Push button plan mark

Canonical URL: https://eloragrid.ai/symbols/iec-push-button-plan-mark
Publisher: Elora Grid
Updated: 2026-10-28
Lookup label: PB
Drawing use: GA
Reference families: IEC

## Symbol convention

Convention: IEC
Form: Push button
IEC 60617 installation-plan style (architectural and topographical installation symbols); independently drawn, not certified IEC geometry or a database identifier.

Installation plan mark for a momentary push button, such as a door bell push or call button, shown as a small circle with a dot.

## In plain English

### What does Push button plan mark mean?

On installation plans a momentary push button is drawn as a small circle, often with a smaller concentric circle or dot inside, at the wall position. It is used for door bell pushes, assistance call pushes, door release buttons and timer pushes, with a tag clarifying which.

### A simple example

The symbol is usually linked to the device it operates: a bell or chime, an intercom door release or a timer. Reading the link is important because the same push mark serves very different systems on a mixed plan. It does not show whether the push is illuminated, weatherproof or extra-low voltage. Those are scheduled.

### What the drawings help you do

Identify which system the push belongs to from its tag or link. Check whether it is outdoors and needs a weatherproof rating. A schematic push button shows contacts; the plan mark shows the position of the accessory only.

### This particular reference

Installation plan mark for a momentary push button, such as a door bell push or call button, shown as a small circle with a dot. A schematic push button shows contacts; the plan mark shows the position of the accessory only.

### Terms

- Rating: A value stating the conditions for which equipment is specified.
- Schematic: A drawing showing function and connections rather than physical appearance.

Concept diagram: Identify the device and form → Read the connections and state → Check 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.

- [IEC graphical symbols for diagrams](https://tc3.iec.ch/tc-activity/graphical-symbols-for-diagrams/)


## What it represents

On installation plans a momentary push button is drawn as a small circle, often with a smaller concentric circle or dot inside, at the wall position. It is used for door bell pushes, assistance call pushes, door release buttons and timer pushes, with a tag clarifying which.
The symbol is usually linked to the device it operates: a bell or chime, an intercom door release or a timer. Reading the link is important because the same push mark serves very different systems on a mixed plan. It does not show whether the push is illuminated, weatherproof or extra-low voltage. Those are scheduled.

## How to read it

- Identify which system the push belongs to from its tag or link.
- Check whether it is outdoors and needs a weatherproof rating.

## Information to show or reference

- Tag the system served.
- State illumination or weatherproofing.
- Show the link to the operated device.

## Important distinction

A schematic push button shows contacts; the plan mark shows the position of the accessory only.

## Facts

- Graphic form: Circle with inner circle or dot
- Common uses: Door bell, call or release button
- Exact standard graphic: Not reproduced here; confirm the form against IEC 60617 and the project legend

## Public references

- [IEC graphical symbols for diagrams](https://tc3.iec.ch/tc-activity/graphical-symbols-for-diagrams/) — IEC. IEC graphical symbol context; independently drawn here.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.