Coil
Relay coil
The operating element associated with a relay and its separately drawn contacts.
Schematic
Symbols · K POL
Polarised relay coil
A polarised relay has operation or a specified response that depends on the documented electrical polarity.
Schematic · K POL
What it represents
A polarised relay has operation or a specified response that depends on the documented electrical polarity. Its terminal and polarity markings must be preserved when the drawing is rearranged.
How to read it
- The device polarity is established by terminal data, not by the left-to-right direction of a rung.
- 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
- State operating voltage
- Reference contact behaviour
A distinction that matters
Polarised relay operation is different from merely fitting a suppression diode to an otherwise ordinary coil.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
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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