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

CB LIM

IEEE / ANSI

ANSI/IEEE current-limiting circuit breaker symbol

A current-limiting breaker form identifies a fault-interruption characteristic associated with the selected breaker. It does not depict continuous regulation of the feeder current. The limiting designation needs the applicable manufacturer's let-through information.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented 1 Pole Circuit Breakers 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

Fault-current limitation is not the same circuit function as an adjustable current regulator.

Full reference

CB LIM

Symbols

Current-limiting circuit breaker

A current-limiting breaker reduces the fault-current peak and energy passed to downstream equipment within its documented operating range. The drawing tag identifies the characteristic, while coordination data belongs in the design documentation.

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

A distinction that matters

Current limitation is a fault-interruption characteristic, not a continuously regulated load-current function.

Full reference

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