SS
Selector switch
An operator switch selecting between documented control positions.
Schematic
Symbols · SEL 3 LRET
Three-position selector returning from left
This three-position selector has a documented spring return from its left position.
Schematic · SEL 3 LRET
What it represents
This three-position selector has a documented spring return from its left position. Other positions may be stable or have different behaviour, so the return direction must remain explicit.
How to read it
- Establish the rest position and the state after the left-hand command is released.
- 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
- Label rest position
- Show return direction
- Provide position/contact schedule
A distinction that matters
Return from left is not equivalent to return from both outer positions.
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: Three-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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