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

HMO1M10

IEC

Single-phase series-connected AC motor

This representation distinguishes the publisher's single-phase AC motor with series connection.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEC / Manufacturer
Form evidence: Single-phase series-connected AC motor. Autodesk IEC-60617 Symbol Preview — Single-phase motor forms; vendor family reference, not certified IEC geometry or database identifier.

A distinction that matters

Single-phase supply character does not establish an ordinary induction-motor winding arrangement.

Full reference

Symbols

Three-phase motor

A motor representation identifies an electrical machine operating as a load in the stated system arrangement. Connection count, motor type and additional winding or rotor detail can change the representation. Its nameplate and equipment schedule provide the selected machine data.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEC / IEEE / ANSI

A distinction that matters

A contactor switches the motor circuit. Motor protection and short-circuit interruption may be provided by additional specified equipment.

Full reference

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