Coil
Relay coil
The operating element associated with a relay and its separately drawn contacts.
Schematic
IEC · Q020801
Thermal-effect qualifier
A thermal-effect qualifier identifies a function responding to or producing heat-related behaviour.
IEC · Thermal-effect qualifier
Autodesk IEC-60617 Symbol Preview — Physical-effect qualifiers; vendor family reference, not certified IEC geometry or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · Q020801
What it represents
A thermal-effect qualifier identifies a function responding to or producing heat-related behaviour.
State whether temperature is the initiating condition or an output effect.
A thermal qualifier is different from a complete temperature sensor or a trip-setting value.
How to read it
- State whether temperature is the initiating condition or an output effect.
- A thermal qualifier is different from a complete temperature sensor or a trip-setting value.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- State whether temperature is the initiating condition or an output effect.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
A thermal qualifier is different from a complete temperature sensor or a trip-setting value.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEC-60617 preview: Physical-effect qualifiers
Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.
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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