Understand the difference.

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

NO HOLD

IEEE / ANSI

ANSI/IEEE maintained normally-open contact symbol

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.

Drawing use

Schematic

Application

Control circuits

Reference family

IEEE / ANSI / Manufacturer

Form evidence

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.

A distinction that matters

Maintained position describes retention; normally open describes the contact's reference state.

Full referenceAdd to legend

NO HOLD

Symbols

Maintained normally-open contact

A maintained NO contact retains the actuated closed position according to its mechanism or control arrangement. The drawing needs the release or reset action in addition to the unactuated contact state.

Drawing use

Schematic

Application

Control circuits

Reference family

IEC / Manufacturer

A distinction that matters

Maintained operation describes retention, whereas normally open describes the reference contact state.

Full referenceAdd to legend

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