RCBO

RCBO as a combined device

RCBO is a protective-device term used for a device with residual-current and overcurrent protection context. In Australian switchboard and circuit records it often sits between RCD testing language and circuit-breaker product data.

That combined role is why the term should not be treated as just another spelling of RCD. The record needs to show which device is installed, which function is being reviewed and which product data applies to that circuit.

Two protection contexts

An RCBO record can carry residual-current test information and overcurrent or fault-duty information. Those parts should stay separate even when they belong to one physical device.

RCD test data vs breaker data

RCD test data and breaker data answer different questions. A residual-current test row does not describe every overcurrent rating, and a circuit-breaker rating does not replace residual-current test context.

The glossary page does not verify the RCBO or infer settings. Product data, project requirements and qualified testing remain controlling sources.

Using RCBO records

Use the protection device terms table for abbreviation context. Use the RCD test checker for entered residual-current test values, and keep any breaker-rating or breaking-capacity review in the relevant product-data record.