CB
Circuit breaker
A switching device that can interrupt a circuit, with specified fault-interruption capability.
SLD / Schematic
Symbols · RCBO
Residual-current breaker with overcurrent protection
An RCBO combines residual-current operation with overcurrent protection in one device.
SLD / Schematic · RCBO
What it represents
An RCBO combines residual-current operation with overcurrent protection in one device. It is often shown as a combined protective function rather than as two unrelated devices.
How to read it
- Identify which neutral connection is switched, sensed or permanently connected for the selected model.
- 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
- Record residual-current type
- Record overcurrent curve and rating
- Verify neutral terminal connections
A distinction that matters
An RCBO differs from an RCCB by its integral overcurrent protective 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.
Residual current device categories
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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