RCD, RCBO and safety switch terminology
Australian RCD, RCBO and safety-switch terms used beside residual-current test worksheets.
RCD, RCBO and safety-switch terms in Australian use
Clarify residual-current device terms without setting universal test criteria or selecting a device.
| Term | Meaning | Used with | Boundary |
|---|---|---|---|
| RCD | Residual-current device recorded for leakage-current protection context. | RCD test checker and verification records | This term does not define the required device or trip result. |
| RCBO | Device combining residual-current and overcurrent protection in one unit. | Device and circuit records | Product rating and circuit application still need review. |
| Safety switch | Common Australian public term often used around RCD protection. | User-facing records and explanations | Map the site term back to the actual installed device. |
| Rated residual current | Device residual-current rating shown on the product. | Entered criterion or test record | Use product and current standards context. |
| Trip time record | Measured time captured under a stated test condition. | RCD test checker | A time without multiplier and instrument context is incomplete. |
- Use these terms to keep RCD records consistent.
- Testing and acceptance criteria remain governed by current standards, instruments and competent review.
Where residual-current terms affect protection checks
Use the terms to distinguish device function and project intent before reviewing protection, testing or switchboard records.
| Item | Value |
|---|---|
| Purpose | Clarify residual-current device terms without setting universal test criteria or selecting a device. |
| How to use the source | Term table only; measured-result comparison belongs to the RCD test checker. |
| Standards and project context | AS/NZS 3000 and AS/NZS 3017 context noted for project review; verify current rules, instruments and device data. |
| Where judgement is still needed | Use this table for lookup, labelling or worksheet context; do not treat it as a project-specific calculation result. |
| Before relying on it | Confirm current standards, local authority requirements, DNSP conditions, project documents and manufacturer data before relying on a decision. |
Standards basis for RCD and RCBO terminology
Keep the standards context, checked date and Australian application visible beside these protection terms.
| Item | Value |
|---|---|
| Source | AUWiring RCD test checker field model and Australian residual-current device terminology. |
| Source type | AUWiring field model with standards context |
| Derivation basis | AUWiring terminology table for test records; controlled test criteria, device rules and procedures are not reproduced. |
| Last checked | 2026-07-13 |
| Review interval | Annual or when RCD test fields, residual-current terminology or verification context changes. |
| Review trigger | Calculator field change, standards update, instrument practice change or project feedback. |
| Version used | R15-2026-07-13 |
| Australian application | Australia; licensed testing, instrument instructions, product data and authority requirements govern formal records. |