Safety switch installation in Melbourne

What is a safety switch?

A safety switch, also called an RCD, helps protect people from electric shock by switching off power quickly when it detects leakage current. An RCBO combines safety switch protection with circuit breaker protection for overloads and short circuits in one device per circuit.

Many older switchboards use one or two RCDs to cover multiple circuits, which can cause bigger outages when a single appliance faults. Upgrading to RCBOs usually means only the problem circuit trips, not half the house.

What our electricians install

Upgrade from shared RCDs to RCBOs

If your switchboard runs multiple circuits through one or two RCDs with separate breakers, a single fault can knock out half the house. RCBOs give protection per circuit, so only the problem circuit trips.

Benefits you’ll notice

• Fewer blackouts because one faulty appliance doesn’t take out multiple areas
• Faster fault-finding because one circuit equals one trip
• Better protection with both shock and overload protection on each circuit
• Less disruption so essentials like the fridge, Wi-Fi and home office stay on if another circuit faults
• Future-ready layout for renovations, air conditioning and EV charger installation

Good reasons to upgrade

• Frequent trips or unexplained outages
• Adding big appliances like an oven, induction cooktop, air-con or EV charger
• Working from home and wanting less disruption
• Getting a property ready for sale or rent

If you are trying to solve a live fault rather than planning an upgrade, our electrical repairs service is often the better starting point.

How to test your safety switch

• Locate the device labelled “Safety Switch”, “RCD” or RCBO in your switchboard
• Press the “T” test button and the power on that circuit should trip immediately
• Reset the switch to restore power

If it doesn’t trip, won’t reset, or feels hot or buzzes, book an electrician to inspect it.

What causes nuisance tripping?

Often it’s a single appliance like a kettle, toaster or dishwasher, moisture in an outdoor circuit, or a wiring fault. RCBOs help by isolating the problem circuit instead of tripping multiple areas at once.

If you’re getting repeated trips, stop resetting it over and over. We can carry out proper fault finding and repairs to identify and fix the cause, or you can visit our broader Electrical Repairs Melbourne page for general repair call-outs.

How much does a safety switch or RCBO upgrade cost?

Cost depends on your switchboard type, how many circuits you have, access, and the condition of the existing wiring. Replacing one faulty device is different to upgrading the whole board to RCBOs.

• Single device replacement is often a more straightforward job
• Multiple RCBO upgrades depend on the number of circuits and board condition
• Switchboard tidy-up and labelling are part of doing the job properly

Photos of your switchboard help us guide you faster and reduce guesswork.

Related electrical services

We can also help with electrical repairs, fault finding and repairs, electrical safety inspections, and switchboard upgrades.

Quick FAQs

Are safety switches mandatory?

Homes need residual-current protection on final sub-circuits. Older boards may use RCDs with separate breakers, while current practice is often RCBOs per circuit.

Will the upgrade cut my power?

Yes, briefly. We plan outages with you and keep downtime as short as possible.

Can I install a safety switch myself?

No. This work must be carried out and tested by a licensed electrician.

How long does an RCBO upgrade take?

It depends on the number of circuits and the condition of the switchboard. Many upgrades are completed the same day.

Need safety switches installed or upgraded in Melbourne?

Tell us what’s happening and we’ll get back to you with next steps. If it’s urgent, call 03 9428 6770.