# Switch-disconnector

Canonical URL: https://eloragrid.ai/symbols/switch-disconnector
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: SD
Drawing use: SLD, Schematic
Reference families: IEC, Manufacturer

A switch-disconnector combines operational switching with an isolation function.

## 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

## Important distinction

A load-break switch is not automatically a switch-disconnector; isolation suitability must be documented.

## Facts

- Drawing role: Switching path
- Representation scope: Functional concept; not an official standard graphic or a product footprint
- Public vendor block reference: HDS11Q69, VDS11Q69 (Autodesk identifiers; not IEC symbol numbers)
- Identifier status: The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name.

## Public references

- [AutoCAD Electrical: Disconnector variants](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-745AF70A-8A25-4729-AAB7-408A61929B9E.htm) — Autodesk. Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
- [Elementary switching devices](https://www.electrical-installation.org/enwiki/Elementary_switching_devices) — Schneider Electric — Electrical Installation Guide. Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.