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ResourcesElectrical symbols, ANSI/IEEE 315 style

Contact, normally closed, time delay opening (TDO) symbol (DWG block)

Contact, normally closed, time delay opening (TDO) is a ready-to-use AutoCAD block named IEEE_CONTACT_NC_TDO in the Electrical symbols, ANSI/IEEE 315 style, group “Contacts, pushbuttons and switches”. It carries 7 attributes, 2 of them visible, so it works in equipment lists and BlockSync exports.

Contact, normally closed, time delay opening (TDO) symbol, block IEEE_CONTACT_NC_TDO
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Download the whole library (79 symbols)

Block details

Block nameIEEE_CONTACT_NC_TDO
LibraryElectrical symbols, ANSI/IEEE 315 style
GroupContacts, pushbuttons and switches
StandardANSI/IEEE 315
Attributes7 attributes, 2 visible

Attributes

Visible on the drawing: TAG, DEVICE.

Hidden, they carry the data for schedules: RATING, PART_NO, MANUFACTURER, REMARKS, DESC.

Export the attributes of every copy in a drawing to Excel with BlockSync, check them and write the corrections back in one run.

How to use it

  1. Download the ZIP and unzip it. It holds one DWG with the block IEEE_CONTACT_NC_TDO.
  2. Open the DWG and copy the block into your drawing, or insert it from the DWG with INSERT.
  3. Double-click a copy to fill in the tag and the other attributes.

The symbol is our own drawing after the common form of ANSI/IEEE 315, not a certified copy. The library page explains how the symbols relate to the standard.

Names in other languages

The same symbol under its name in the other site languages.

English
Contact, normally closed, time delay opening (TDO)
Simplified Chinese
触点，常闭，延时断开（TDO）
Traditional Chinese
觸點，常閉，延時斷開（TDO）
Japanese
接点、常閉、限時動作(TDO)
Korean
접점, 상시 닫힘, 지연 열림(TDO)
German
Kontakt, Öffner, abfallverzögert (TDO)
French
Contact à ouverture, temporisé à l'ouverture (TDO)
Italian
Contatto NC, ritardato all'apertura (TDO)
Spanish
Contacto NC, retardado a la apertura (TDO)

More symbols in the group “Contacts, pushbuttons and switches”