PB NO
Normally open pushbutton
A pushbutton contact normally shown open before actuation.
Schematic
Symbols · PB NO LAMP
Illuminated normally-open pushbutton
An illuminated NO pushbutton combines a manual normally-open contact function with an indication lamp.
Schematic · PB NO LAMP
What it represents
An illuminated NO pushbutton combines a manual normally-open contact function with an indication lamp. The lamp circuit is drawn or referenced separately because its indication need not follow the contact state.
How to read it
- Trace the lamp supply independently from the pushbutton contact circuit.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.
Information to show or reference
- Identify contact terminals
- Identify lamp supply and colour
- State the indicated condition
A distinction that matters
An illuminated actuator does not make its contact a lamp-test contact.
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: Illuminated push buttons
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
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.
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