PE
Protective earth
An identified connection serving the protective earthing function.
SLD / Schematic
Symbols · SA
Surge arrester
A surge arrester diverts a documented surge-related current through its protective path.
SLD / Schematic · SA
What it represents
A surge arrester diverts a documented surge-related current through its protective path. Its system connection, rating and earthing lead arrangement are essential drawing information.
How to read it
- Trace the protected conductor and discharge path independently.
- 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 protected circuit
- State arrester ratings/type
- Reference earth connection and placement
A distinction that matters
A surge arrester limits overvoltage transients; it does not replace overcurrent interruption.
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: Earthing, sources and surge protection
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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