# Direct-current supply qualifier

Canonical URL: https://eloragrid.ai/symbols/iec-direct-current-supply-qualifier
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: Q020201
Drawing use: SLD, Schematic
Reference families: IEC, Manufacturer

## Symbol convention

Convention: IEC
Form: Direct-current supply qualifier
Autodesk IEC-60617 Symbol Preview — Winding connection and supply-character qualifiers; vendor family reference, not certified IEC geometry or database identifier.

A direct-current qualifier identifies the supply character associated with a circuit or device.

## What it represents

A direct-current qualifier identifies the supply character associated with a circuit or device.
Show voltage, polarity and circuit reference separately.
A DC indication does not establish whether the source is a battery, rectifier or converter.

## How to read it

- Show voltage, polarity and circuit reference separately.
- A DC indication does not establish whether the source is a battery, rectifier or converter.

## Information to show or reference

- Identify the associated device, circuit or diagram boundary.
- Show voltage, polarity and circuit reference separately.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

## Important distinction

A DC indication does not establish whether the source is a battery, rectifier or converter.

## Facts

- Reference scope: Specific public IEC-context family form
- Publisher reference token: Q020201, Q020203 (Autodesk token; not a verified IEC database ID)
- Information added: Show voltage, polarity and circuit reference separately.
- Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic

## Public references

- [AutoCAD Electrical: Winding arrangements and AC/DC indications](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-3F5A759D-872A-4990-8AAE-7CCAFBBBD4C5.htm) — Autodesk. Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.

## 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.