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

RCBO

Symbols

Residual-current breaker with overcurrent protection

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.

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

A distinction that matters

An RCBO differs from an RCCB by its integral overcurrent protective function.

Full reference

Symbols

Circuit breaker

A circuit-breaker representation identifies a device capable of interrupting its circuit under the operating conditions for which it is rated. The drawing should connect that device to its equipment identification, protection arrangement and control information. The graphical mark alone does not establish the current rating, breaking capacity or trip settings.

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

A distinction that matters

A disconnector provides isolation; it is not automatically a fault-interrupting circuit breaker. Check published device capabilities.

Full reference

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