Understand the difference.

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

FU

IEEE / ANSI

ANSI/IEEE fuse symbol

The fuse representation identifies a sacrificial protective element in a conductor path. The drawing requires its fuse designation and selected link data; a compact outline cannot establish the time-current category, voltage rating or breaking capacity.

Drawing use

SLD / Schematic

Application

Power distribution

Reference family

IEEE / ANSI / Manufacturer

Form evidence

Autodesk IEEE-oriented Fuses 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 fuse graphic represents a fuse-link function; a fuse-switch includes an operating assembly as well.

Full referenceAdd to legend

FU

Symbols

Fuse

A fuse representation identifies a protective fuse link in a circuit. Its rating and operating characteristics are additional information: a generic fuse mark does not specify utilization category, current, voltage, breaking capacity or coordination with other protective equipment.

Drawing use

SLD / Schematic

Application

Power distribution

Reference family

IEC / IEEE / ANSI

A distinction that matters

A fuse and a fused disconnector may share protective components, but the assembly also includes a switching or isolation function.

Full referenceAdd to legend

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