# Solid-state relay Canonical URL: https://eloragrid.ai/symbols/solid-state-relay Publisher: Elora Grid Updated: 2026-10-13 Lookup label: SSR Drawing use: Schematic Reference families: IEC, Manufacturer A solid-state relay switches an output through semiconductor circuitry in response to a control input. ## What it represents A solid-state relay switches an output through semiconductor circuitry in response to a control input. Control isolation, output type and leakage depend on the chosen product. ## How to read it - Distinguish the low-power input terminals from the load-side output terminals. - 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 - Name output AC or DC type - State input operating range - Reference leakage and load limits ## Important distinction An SSR has no ordinary mechanical contact gap and must not be treated as a disconnector. ## Facts - Drawing role: Relay operation - Representation scope: Functional concept; not an official standard graphic or a product footprint - Public vendor block reference: HCR1SSD, VCR1SSD (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 - [Relays and contacts: public symbol reference](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-011C62B8-9EC8-485C-B47D-B22A3F7B7574.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.