{"schemaVersion":1,"slug":"iec-push-button-plan-mark","name":"Push button plan mark","kind":"symbol","abbreviation":"PB","aliases":["bell push","door bell button","push-button plan symbol"],"category":"installation-communications","drawingTypes":["GA"],"referenceFamilies":["IEC"],"summary":"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.","description":["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."],"readingNotes":["Identify which system the push belongs to from its tag or link.","Check whether it is outdoors and needs a weatherproof rating."],"drawingChecklist":["Tag the system served.","State illumination or weatherproofing.","Show the link to the operated device."],"distinction":"A schematic push button shows contacts; the plan mark shows the position of the accessory only.","facts":[{"label":"Graphic form","value":"Circle with inner circle or dot"},{"label":"Common uses","value":"Door bell, call or release button"},{"label":"Exact standard graphic","value":"Not reproduced here; confirm the form against IEC 60617 and the project legend"}],"references":[{"sourceId":"iec-diagrams","relevance":"IEC graphical symbol context; independently drawn here."}],"related":["iec-audible-bell","iec-time-delay-push-switch","iec-door-intercom-station"],"artwork":"s28-iec-push-button-plan-mark","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEC","form":"Push button","reference":"IEC 60617 installation-plan style (architectural and topographical installation symbols); independently drawn, not certified IEC geometry or a database identifier."},"plainEnglish":{"title":"What does Push button plan mark mean?","introduction":"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.","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.","drawings":"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.","terms":[{"name":"Rating","meaning":"A value stating the conditions for which equipment is specified."},{"name":"Schematic","meaning":"A drawing showing function and connections rather than physical appearance."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"IEC graphical symbols for diagrams","url":"https://tc3.iec.ch/tc-activity/graphical-symbols-for-diagrams/"}],"detail":"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.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/iec-push-button-plan-mark","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/iec-push-button-plan-mark.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"iec-diagrams","title":"IEC graphical symbols for diagrams","publisher":"IEC","url":"https://tc3.iec.ch/tc-activity/graphical-symbols-for-diagrams/","type":"standard","scope":"IEC 60617 and related symbol-design publications. Full database access requires a subscription.","checkedOn":"2026-10-13","reuse":"link-only","relevance":"IEC graphical symbol context; independently drawn here."}]}