# Three-point current measurement selector

Canonical URL: https://eloragrid.ai/symbols/iec-three-point-current-measurement-selector
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: HSW1S94
Drawing use: Schematic
Reference families: IEC, Manufacturer

## Symbol convention

Convention: IEC
Form: Three-point current measurement selector
Autodesk IEC-60617 Symbol Preview — Measurement-selection and mechanically operated switch forms; vendor family reference, not certified IEC geometry or database identifier.

This representation identifies selection among three current-measurement points.

## What it represents

This representation identifies selection among three current-measurement points. The meter is connected to one of three documented current-measurement circuits. When CT secondaries are involved, the selected switch arrangement must be considered with their continuity and test provisions.
Document the exact terminal and switching scheme from the selected equipment. The concept is an interpretation reference rather than a field switching or testing procedure.

## How to read it

- Coordinate CT secondary handling and the selected meter-switch connection scheme.
- A current selector cannot be treated as an ordinary voltage selector because CT circuits require documented continuity arrangements.

## Information to show or reference

- Identify the associated device, circuit or diagram boundary.
- Coordinate CT secondary handling and the selected meter-switch connection scheme.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

## Important distinction

A current selector cannot be treated as an ordinary voltage selector because CT circuits require documented continuity arrangements.

## Facts

- Reference scope: Specific public IEC-context family form
- Publisher reference token: HSW1S94 (Autodesk token; not a verified IEC database ID)
- Information added: Coordinate CT secondary handling and the selected meter-switch connection scheme.
- Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic

## Public references

- [AutoCAD Electrical: Level, flow, keyed and measurement switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-1FB94435-C954-4479-BD97-25796DB8F728.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.