Safety Switches, Surge Diverters & Circuit Breakers
Safety switches, surge diverters and circuit breakers: too often these phrases are used interchangeably. Certainly, confusion around these three abounds. Knowing the difference will not only give you some one-up convo with the mates at the BBQ on the weekend, but also give you a better understanding of how important each of these devices are.
Safety switches are designed to automatically switch off electrical power within 0.03 of a second when an electrical fault is detected. They monitor the electrical flow through your home or property and detect problems that pose a danger to your personal safety. They’re often labelled with the words “safety switch” and always have a test button with “30ma” printed on them.
Surge diverters protect your property from voltage surges, such as when a lightning strike causes a power surge. It captures the spike in the wiring, preventing the power surge from transferring into the electrical equipment within your home or property. They do not serve as a safety switch against electrical shock.
Circuit breakers provide overcurrent and short-circuit protection when, for example, a power point is overloaded. They also do not act as a safety switch against electrical shock.
All three devices serve a specific purpose and work together to ensure your electrical safety.
Safety Switches, Surge Diverters & Circuit Breakers
Feeling more in the know? Great. At least you’ll sound smarter when fielding questions from the helpful assistant at your local Bunnings.
That said, knowledge doesn’t equate to know-how. If you have any problems, or you’re unsure if an electrical device is installed correctly (or at all), contact a registered electrician.
Be smart. Stay safe.


