CB
Circuit breaker
A switching device that can interrupt a circuit, with specified fault-interruption capability.
SLD / Schematic
Symbols · CB LIM
Current-limiting circuit breaker
A current-limiting breaker reduces the fault-current peak and energy passed to downstream equipment within its documented operating range.
SLD / Schematic · CB LIM
What it represents
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.
How to read it
- Use manufacturer let-through curves for the applicable prospective fault level.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.
Information to show or reference
- Identify limiting device model
- Reference let-through data
- Document coordination assumptions
A distinction that matters
Current limitation is a fault-interruption characteristic, not a continuously regulated load-current function.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Circuit-breaker symbol variants
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
Fundamental characteristics of a circuit-breaker
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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