# Three-phase bridge rectifier

Canonical URL: https://eloragrid.ai/symbols/three-phase-bridge-rectifier
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: BR 3PH
Drawing use: Schematic
Reference families: IEC, Manufacturer

A three-phase bridge rectifier converts a documented three-phase AC input into a DC output.

## What it represents

A three-phase bridge rectifier converts a documented three-phase AC input into a DC output. Its input phase terminals and DC polarity must be identifiable.

## How to read it

- Check the rectifier's output and any smoothing network as separate circuit elements.
- 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

- Label three AC phases
- Mark DC polarity
- Reference rectifier ratings

## Important distinction

Three-phase rectification differs from a single-phase bridge connection.

## Facts

- Drawing role: Semiconductor function
- Representation scope: Functional concept; not an official standard graphic or a product footprint
- Public vendor block reference: HDI1V5, VDI1V5 (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: Semiconductor components](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-AC954072-7314-4682-88AF-38160D61E9A2.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.