PLC I/O
PLC input / output
A controller interface point connecting field signals to an identified module channel.
Schematic
Symbols · TS SELF
Self-operating thermal switch
A self-operating thermal switch responds directly to its thermal condition rather than through a separate powered relay input.
Schematic · TS SELF
What it represents
A self-operating thermal switch responds directly to its thermal condition rather than through a separate powered relay input. Its contact and reset behaviour are device-specific.
How to read it
- Trace the thermal device separately from any PLC or auxiliary supply.
- 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
- State thermal threshold
- Identify reset characteristic
- Reference mounted location
A distinction that matters
A self-operating thermal switch is not the same as a powered temperature monitoring relay.
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: Pressure and temperature switches
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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