Understand the difference.

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

Isolator

IEEE / ANSI

ANSI/IEEE disconnector symbol

The IEEE-oriented disconnector form identifies a separable power-circuit path. Its operating state and main-device tag guide the reader to the isolation and interlocking information; electrical duty must be established from the specified equipment.

Drawing use

SLD / Schematic

Application

Power distribution

Reference family

IEEE / ANSI / Manufacturer

Form evidence

Autodesk IEEE-oriented Disconnect 1 Pole 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

A disconnector's isolation function is different from a protective device's automatic fault interruption.

Full referenceAdd to legend

Isolator

Symbols

Disconnector

A disconnector, often called an isolator, provides an isolation function in an electrical circuit. Its representation should be read with the drawing legend and the selected device specification. Do not infer load-breaking or fault-interruption capability simply because a drawing contains a switch-like mark.

Drawing use

SLD / Schematic

Application

Power distribution

Reference family

IEC / IEEE / ANSI

A distinction that matters

A load-break switch has a specified load-switching capability. A disconnector designation alone does not establish that capability.

Full referenceAdd to legend

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