SS
Selector switch
An operator switch selecting between documented control positions.
Schematic
Symbols · KEY SEL 4
Four-position key selector
A four-position key selector provides key-controlled selection among four documented positions.
Schematic · KEY SEL 4
What it represents
A four-position key selector provides key-controlled selection among four documented positions. The schematic and operator schedule should agree on position numbering and permitted key removal.
How to read it
- Check the contact table against the front-panel legend.
- 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
- Define position order
- State key removal
- Reference contact terminals
A distinction that matters
A keyed four-position operator is different from four separately keyed switches.
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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