# ANSI/IEEE Two-pole power switch form

Canonical URL: https://eloragrid.ai/symbols/ansi-two-pole-power-switch
Publisher: Elora Grid
Updated: 2026-10-28
Lookup label: SW 2P
Drawing use: SLD, Schematic
Reference families: IEEE / ANSI, Manufacturer

## Symbol convention

Convention: IEEE / ANSI
Form: 2P Power Switch
Autodesk IEEE Symbol Preview: Power Switches, block HCB11Q50. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.
Related representation: [Two-pole power switch](https://eloragrid.ai/symbols/two-pole-power-switch)

IEEE-library form of two-pole power switch: a two-pole power switch operates two circuit conductors through a common device.

## In plain English

### What does ANSI/IEEE Two-pole power switch form mean?

This reference locates two-pole power switch in Autodesk's IEEE-oriented power switches family. A two-pole power switch operates two circuit conductors through a common device. The schematic may use separate pole elements linked by a mechanism annotation. The public library uses HCB11Q50 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.

### A simple example

Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.

### What the drawings help you do

Identify whether the two poles are phases, a phase and neutral, or DC conductors. Two poles do not necessarily mean a two-phase supply. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.

### This particular reference

IEEE-library form of two-pole power switch: a two-pole power switch operates two circuit conductors through a common device. Two poles do not necessarily mean a two-phase supply.

### Terms

- DC: Direct current: electricity flowing in one direction.
- Normally open / normally closed: The contact state in the normal condition defined for the drawing.
- Phase: One of the related AC waveforms in a power system.

Concept diagram: Identify the device and form → Read the connections and state → Check the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

- [Autodesk IEEE Symbol Preview: Power Switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-E57D79F6-E6C4-4B78-95DC-62F16642C95B.htm)


## What it represents

This reference locates two-pole power switch in Autodesk's IEEE-oriented power switches family. A two-pole power switch operates two circuit conductors through a common device. The schematic may use separate pole elements linked by a mechanism annotation. The public library uses HCB11Q50 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.
Identify whether the two poles are phases, a phase and neutral, or DC conductors. Two poles do not necessarily mean a two-phase supply. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.

## How to read it

- Identify whether the two poles are phases, a phase and neutral, or DC conductors.
- 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 both conductors
- Show common operator
- Reference switching ratings

## Important distinction

Two poles do not necessarily mean a two-phase supply.

## Facts

- Convention evidence: Autodesk IEEE Symbol Preview: Power Switches; published form: 2P Power Switch.
- Public vendor block: HCB11Q50. Vendor library token, not an IEEE symbol number.
- Drawing role: Switching path
- 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.
- Artwork scope: Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified.

## Public references

- [Autodesk IEEE Symbol Preview: Power Switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-E57D79F6-E6C4-4B78-95DC-62F16642C95B.htm) — Autodesk. Public IEEE-oriented Power Switches table explicitly lists HCB11Q50 as 2P Power Switch. This supports the vendor convention context, not reproduction of the publisher 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.