# Disconnect terminal block

Canonical URL: https://eloragrid.ai/symbols/disconnect-terminal-block
Publisher: Elora Grid
Updated: 2026-10-13
Lookup label: TB DISC
Drawing use: Schematic
Reference families: Manufacturer

A disconnect terminal includes a documented separable path for circuit isolation or testing at the wiring level.

## What it represents

A disconnect terminal includes a documented separable path for circuit isolation or testing at the wiring level. Its reference operating state and terminal identity must be shown.

## How to read it

- Identify the circuit path opened by the disconnect element.
- 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 disconnect function
- Show connected circuits
- Reference normal/service position

## Important distinction

A disconnect terminal is not automatically suitable for load interruption or for every CT testing arrangement.

## Facts

- Drawing role: Wiring interface
- Representation scope: Functional concept; not an official standard graphic or a product footprint
- 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

- [Terminal block functional families](https://www.phoenixcontact.com/en-gb/products/terminal-blocks) — Phoenix Contact. 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.