Coil
Relay coil
The operating element associated with a relay and its separately drawn contacts.
Schematic
Symbols · K D LED
Relay coil with diode and LED
A relay assembly with diode and LED combines coil transient suppression and a visible energisation indicator.
Schematic · K D LED
What it represents
A relay assembly with diode and LED combines coil transient suppression and a visible energisation indicator. The schematic must identify both auxiliary functions without treating the LED as proof of contact movement.
How to read it
- The indicator reports its own electrical condition, not necessarily the mechanical contact state.
- 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
- Show coil polarity
- Identify indicator circuit
- Reference actual contact feedback
A distinction that matters
An illuminated coil indicator is different from an auxiliary contact confirming device position.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
AutoCAD Electrical: Relay suppression components
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
Relays and contacts: public symbol reference
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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