# Neutral link, closed

Canonical URL: https://eloragrid.ai/symbols/iec-neutral-link-closed
Publisher: Elora Grid
Updated: 2026-10-28
Lookup label: N
Drawing use: SLD, Schematic
Reference families: IEC, Manufacturer

## Symbol convention

Convention: IEC
Form: Neutral link, closed
Autodesk IEC-60617 Symbol Preview: Fuses (Neutral Link - Closed); vendor family reference, not certified IEC geometry.

A removable link in the neutral conductor shown in its closed position, allowing the neutral to be opened for testing.

## In plain English

### What does Neutral link, closed mean?

A neutral link is a bolted or plug-in link in the neutral conductor, often mounted in a fuse carrier style holder alongside phase fuses. It allows the neutral of a circuit to be disconnected for insulation testing or fault finding without disturbing other circuits on the neutral bar. The closed form shows its normal service state.

### A simple example

The symbol is not a switch and the link should not be opened under load. It does not provide overcurrent protection; the fuse-like holder can mislead readers into treating it as a neutral fuse. Rules on whether the neutral may be separately disconnected differ between earthing schemes.

### What the drawings help you do

Do not read the holder as a fuse. Confirm the link is opened only with the circuit isolated. A closed neutral link is a removable connection; a neutral fuse would be a protective device and is generally not permitted.

### This particular reference

A removable link in the neutral conductor shown in its closed position, allowing the neutral to be opened for testing. A closed neutral link is a removable connection; a neutral fuse would be a protective device and is generally not permitted.

### Terms

- Phase: One of the related AC waveforms in a power system.
- Rating: A value stating the conditions for which equipment is specified.
- Schematic: A drawing showing function and connections rather than physical appearance.

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.

- [Fuse and neutral-link symbols](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-E540AE83-CEE1-4CA9-B43C-B19004025EAA.htm)
- [Definition of standardised earthing schemes](https://www.electrical-installation.org/enwiki/Definition_of_standardised_earthing_schemes)


## What it represents

A neutral link is a bolted or plug-in link in the neutral conductor, often mounted in a fuse carrier style holder alongside phase fuses. It allows the neutral of a circuit to be disconnected for insulation testing or fault finding without disturbing other circuits on the neutral bar. The closed form shows its normal service state.
The symbol is not a switch and the link should not be opened under load. It does not provide overcurrent protection; the fuse-like holder can mislead readers into treating it as a neutral fuse. Rules on whether the neutral may be separately disconnected differ between earthing schemes.

## How to read it

- Do not read the holder as a fuse.
- Confirm the link is opened only with the circuit isolated.

## Information to show or reference

- Label the link with its circuit number.
- Show it in its normal closed state.
- Check scheme rules for neutral disconnection.

## Important distinction

A closed neutral link is a removable connection; a neutral fuse would be a protective device and is generally not permitted.

## Facts

- Graphic cue: Fuse-carrier style link drawn bridged
- Publisher form: Neutral Link - Closed (HFU1NLC Autodesk identifier)
- Preview: Original educational illustration; consult the publisher and applicable standard for the exact graphic

## Public references

- [Fuse and neutral-link symbols](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-E540AE83-CEE1-4CA9-B43C-B19004025EAA.htm) — Autodesk. Public IEC-oriented preview listing neutral link closed and open forms.
- [Definition of standardised earthing schemes](https://www.electrical-installation.org/enwiki/Definition_of_standardised_earthing_schemes) — Schneider Electric, Electrical Installation Guide. Public installation-guide definitions of the neutral's role in earthing schemes.

## 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.