Safety Switches in Perth — What You Need to Know

Safety switches (also called residual current devices or RCDs) are one of the most important electrical safety devices in any Perth home. They can prevent electrocution — and in WA, they're now mandatory in rental properties. Here's everything you need to know.

What Is a Safety Switch?

A safety switch monitors the flow of electricity through a circuit. If it detects a difference — even a tiny one — between the electricity going out and coming back, it shuts off the power in as little as 0.03 seconds. That's fast enough to save a life in an electrocution event.

Don't confuse safety switches with circuit breakers or fuses. Circuit breakers protect the wiring; safety switches protect people. You need both in a modern Perth home.

Are Safety Switches Mandatory in Perth?

Yes — under WA regulations, all new and renovated residential properties must have safety switches fitted on power point and lighting circuits. For rental properties, landlords are required to install safety switches on all circuits. If you're a tenant and your rental doesn't have safety switches, contact your property manager.

How to Test Your Safety Switch

Safety switches have a test button — usually labelled 'T' or 'Test'. Press it: the switch should trip immediately, cutting power to that circuit. If it doesn't, have a licensed electrician inspect it urgently. You should test your safety switches every three months.

What Does Safety Switch Installation Cost?

A licensed electrician in Perth typically charges $150–$300 to install a safety switch, depending on your switchboard type and the number of circuits being protected. If your switchboard is old and needs upgrading first, costs can rise to $800–$2,500+.