Coil
Relay coil
The operating element associated with a relay and its separately drawn contacts.
Schematic
IEC · Q021210
Mechanical stop latch in engaged state
This form identifies an engaged stop-latch mechanism.
IEC · Mechanical stop latch in engaged state
Autodesk IEC-60617 Symbol Preview — Mechanical return and interlock 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 · Q021210
What it represents
This form identifies an engaged stop-latch mechanism. The state describes mechanical retention. The affected device can have separate electrical contacts reporting that position, so engagement is not equivalent to energisation.
State which movement is restrained and what documented release action changes the condition. Where feedback is used, cross-reference its actual contact rather than treating the latch mark as an electrical output.
How to read it
- State which movement is restrained and what releases the latch.
- An engaged latch does not automatically indicate a circuit is energised.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- State which movement is restrained and what releases the latch.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
An engaged latch does not automatically indicate a circuit is energised.
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: Mechanical return and interlock qualifiers
Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.
Autodesk IEC-60617 preview: Latching-device qualifiers
Public alternate engaged/neutral latching-device tokens are consolidated with the matching mechanical state concept.
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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