Side-by-side reference

Understand the difference.

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

First referenceCompare with

IEEE / ANSI

ANSI/IEEE selector switch symbol

The two-position maintained selector form links an operator position to a defined contact state. A position/contact schedule supplies the full control meaning; the operator label alone cannot describe multiple contact blocks on the same handle.

Drawing use: Schematic
Application: Control circuits
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented 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

Operator positions count mechanical choices, while poles count electrical paths.

Full reference

Symbols

Selector switch

A selector switch provides a choice between operating positions such as local and remote or manual and automatic. Its contacts may be shown separately from the operator symbol. The contact truth table or switching schedule defines which contacts operate in each position.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / IEEE / ANSI

A distinction that matters

A changeover contact describes connections; a selector switch also includes an operator and its position behaviour.

Full reference

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