Isolator
Disconnector
A switching device providing an electrical isolation function.
SLD / Schematic
Symbols · SD
Switch-disconnector
A switch-disconnector combines operational switching with an isolation function.
SLD / Schematic · SD
What it represents
A switch-disconnector combines operational switching with an isolation function. Its designation should distinguish it from a disconnector that is not intended to interrupt load current.
How to read it
- Check both switching duty and the documented isolation function.
- 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 utilization category
- Show pole and neutral arrangement
- Document isolation designation
A distinction that matters
A load-break switch is not automatically a switch-disconnector; isolation suitability must be documented.
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: Disconnector variants
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
Elementary switching devices
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.
Explore related references
Put the reference into a drawing workflow.
Elora Grid helps electrical teams work with drawings, specifications and equipment information. Explore the drafting workflow or join the early-access waitlist.