Understand the difference.

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

KEY SEL 3

IEEE / ANSI

ANSI/IEEE three-position key selector symbol

The key-operated three-position selector form combines a contact schedule with controlled operator access. Stable positions, return behaviour and key-removal restrictions must be supplied by the chosen operator assembly.

Drawing use

Schematic

Application

Control circuits

Reference family

IEEE / ANSI / Manufacturer

Form evidence

Autodesk IEEE-oriented 3 Position Selector 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

Key access does not change the contacts' electrical ratings or establish an isolation function.

Full referenceAdd to legend

KEY SEL 3

Symbols

Three-position key selector

A three-position key selector combines position selection with a key-operated mechanism. Stable positions, return behaviour and key-removal conditions are all required for a complete control description.

Drawing use

Schematic

Application

Control circuits

Reference family

IEC / Manufacturer

A distinction that matters

Key operation adds access control to a selector; it does not change its electrical contact ratings.

Full referenceAdd to legend

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