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

K AC

IEEE / ANSI

ANSI/IEEE ac relay coil symbol

The AC relay operating form belongs to a specified alternating-current control supply. Its coil rating includes the applicable voltage and frequency; contact ratings are a separate specification and may concern a different circuit.

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

AC coil suitability does not establish a contact's permitted DC switching duty.

Full reference

K AC

Symbols

AC relay coil

An AC relay coil is intended for a specified alternating-current control supply. Voltage and frequency form part of its coil rating and cannot be inferred from the relay tag.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / Manufacturer

A distinction that matters

AC coil suitability does not mean its contacts can switch every AC or DC load.

Full reference

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