Understand the difference.

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

Q021208

IEEE / ANSI

ANSI/IEEE Mechanical stop-latch indication form

This reference locates mechanical stop-latch indication in Autodesk's IEEE-oriented mechanical controls family. A stop-latch indication identifies a mechanically retained control position. A stop latch mechanically retains a position until its specified release action occurs. The mechanism state can be maintained without an electrical holding coil remaining energised. The public library uses Q021208 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.

Drawing use

Schematic

Application

Control circuits

Reference family

IEEE / ANSI / Manufacturer

Form evidence

Auto Non Return Stop Latch. Autodesk IEEE Symbol Preview: Mechanical Controls, block Q021208. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.

A distinction that matters

A stop latch is distinct from a timer holding a circuit electrically.

Full referenceAdd to legend

Q021208

IEC

Mechanical stop-latch indication

A stop-latch indication identifies a mechanically retained control position. A stop latch mechanically retains a position until its specified release action occurs. The mechanism state can be maintained without an electrical holding coil remaining energised.

Drawing use

Schematic

Application

Control circuits

Reference family

IEC / Manufacturer

Form evidence

Mechanical stop-latch indication. Autodesk IEC-60617 Symbol Preview — Mechanical return and interlock qualifiers; vendor family reference, not certified IEC geometry or database identifier.

A distinction that matters

A stop latch is distinct from a timer holding a circuit electrically.

Full referenceAdd to legend

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