NO HOLD
Maintained normally-open contact
A maintained NO contact retains the actuated closed position according to its mechanism or control arrangement.
Schematic
IEEE / ANSI · NO HOLD
ANSI/IEEE maintained normally-open contact symbol
IEEE-oriented graphical reference for maintained normally-open contact, with public vendor evidence and drawing-reading notes.
IEEE / ANSI · Autodesk IEEE-oriented Relays and Contacts 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.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · NO HOLD
What it represents
The maintained NO contact form combines a normally-open reference state with documented retention of an operated position. Its release or return mechanism needs a link so the reader does not assume momentary operation.
This is a convention-specific lookup based on the publisher's IEEE-labelled preview. The geometry here is independently drawn to explain the connection or operation; it is not a certified reproduction of the standard graphic.
How to read it
- Find the action that returns the maintained contact.
- Read the selected library and the project legend together. A vendor block identifier is meaningful within its named library and is not a universal standard-symbol code.
Information to show or reference
- State initial and retained states
- Identify mechanism reference
- Document return action
A distinction that matters
Maintained position describes retention; normally open describes the contact's reference state.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEEE Symbol Preview — Relays and Contacts
Exact public IEEE-oriented category page verifying the component name and vendor block identifier.
IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams
Graphic-symbol standards context and official status; not a source of reproduced artwork.
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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