# Normally-open limit switch

Canonical URL: https://eloragrid.ai/symbols/normally-open-limit-switch
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: LS NO
Drawing use: Schematic
Reference families: IEC, Manufacturer

A normally-open limit switch closes when the documented mechanical travel or position condition actuates it.

## What it represents

A normally-open limit switch closes when the documented mechanical travel or position condition actuates it. It identifies a position input rather than the complete mechanical arrangement.

## How to read it

- State which equipment position actuates the switch.
- 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 monitored position
- Label actuator reference
- Show contact terminals

## Important distinction

A limit switch responds to mechanical position; a pushbutton responds to an operator action.

## Facts

- Drawing role: Actuated indication
- Representation scope: Functional concept; not an official standard graphic or a product footprint
- Public vendor block reference: HLS11, VLS11 (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: Limit switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-3CF4BE45-A302-4757-B5C9-C1AFF9BDC512.htm) — Autodesk. 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.