SS
Selector switch
An operator switch selecting between documented control positions.
Schematic
Symbols · SEL 4 HOLD
Four-position maintained selector
A four-position maintained selector provides four stable operating choices.
Schematic · SEL 4 HOLD
What it represents
A four-position maintained selector provides four stable operating choices. Each contact's state across those choices is recorded in a schedule instead of trying to express the complete logic in one contact outline.
How to read it
- Verify the sequence and order of all four positions.
- 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
- Name four positions
- Provide switching table
- Identify common operator tag
A distinction that matters
Four positions do not imply four independent contact poles.
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: Four-position selectors
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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