Understand the difference.

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

Q020201

IEC

Direct-current supply qualifier

A direct-current qualifier identifies the supply character associated with a circuit or device.

Drawing use

SLD / Schematic

Application

Power distribution

Reference family

IEC / Manufacturer

Form evidence

Direct-current supply qualifier. Autodesk IEC-60617 Symbol Preview — Winding connection and supply-character qualifiers; vendor family reference, not certified IEC geometry or database identifier.

A distinction that matters

A DC indication does not establish whether the source is a battery, rectifier or converter.

Full referenceAdd to legend

M

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 referenceAdd to legend

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