PLC I/O
PLC input / output
A controller interface point connecting field signals to an identified module channel.
Schematic
Symbols · TS NC
Temperature switch NC
A temperature-operated NC switch opens under a documented thermal condition.
Schematic · TS NC
What it represents
A temperature-operated NC switch opens under a documented thermal condition. Schematics for heaters, fans and equipment trips need the operating threshold and reference state.
How to read it
- Identify automatic reset or manual reset where the product specifies it.
- 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
- Name protected equipment
- Record threshold and reset type
- Show contact terminal pair
A distinction that matters
NC describes contact state independently of the thermal trip function.
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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