NO
Normally open contact
A contact shown open in the normal state defined for its device.
Schematic
Symbols · OL NC
Motor overload trip NC contact
An overload trip NC contact opens on the documented overload relay operation.
Schematic · OL NC
What it represents
An overload trip NC contact opens on the documented overload relay operation. It is commonly wired in the motor-control path while the overload sensing elements belong to the power circuit.
How to read it
- Use the overload device tag to link sensing and control-contact representations.
- 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
- Identify overload relay
- State contact terminals
- Show reset and trip logic
A distinction that matters
The auxiliary overload contact interrupts a control path; it does not itself carry the motor feeder current.
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: Motor control and overloads
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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