Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

TS NC

IEEE / ANSI

ANSI/IEEE temperature switch nc symbol

The temperature-operated NC form marks a normally continuous path changed by its documented thermal condition. Its usefulness in heater, fan or trip logic depends on the threshold and reset information linked to the drawing.

Drawing use: Schematic
Application: Control circuits
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented Pressure and Temperature Switches functional form. Autodesk explicitly publishes this block under IEEE Symbol Preview. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

Contact polarity does not uniquely determine whether a circuit represents overheating or undertemperature.

Full reference

TS NC

Symbols

Temperature switch NC

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.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / Manufacturer

A distinction that matters

NC describes contact state independently of the thermal trip function.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.