Quick answer: Repair your switchboard if it already has circuit breakers and safety switches (RCDs), has spare space, and only one part has failed, such as a single breaker or RCD. Replace it if it still has ceramic fuses, has no safety switches, is full, shows heat damage, or is mounted on an old asbestos panel. In Melbourne, a typical repair costs about $200 – $600; a replacement about $850 – $2,200 for most homes.
By Dean Pahek, licensed electrician (Lic. 34219), St Kilda East · Last updated: November 2026
Whether to repair or replace a switchboard comes down to three things: what kind of protection it has (fuses or breakers and RCDs), its condition, and what you plan to plug into it next.
Repair vs replacement at a glance
| Factor | Repair | Replacement |
|---|---|---|
| Best when | Modern board, one faulty part | Old, unsafe, full or damaged board |
| Typical cost (Melbourne, 2026) | About $200 – $600 | About $850 – $2,200 (single-phase); $2,800 – $4,500 (three-phase) |
| Time | 1–2 hours | 2–4 hours for most homes |
| Safety outcome | Restores the board to how it was | Brings the whole board to current standards with RCD protection |
| Lifespan | Depends on the rest of the board | A new board typically lasts decades |
| Room for EV, solar, air-con | No change | Space planned for new circuits |
For a full price breakdown, see our full price guide. Real prices come from a free inspection and a fixed written quote.
When a repair makes sense
The board has circuit breakers and RCDs and is less than about 20–25 years old.
One breaker or RCD has failed or trips without a wiring fault.
A loose connection or a damaged main switch is the cause.
There's spare space, and you're not planning big new loads soon.
Typical repair prices: replacing a circuit breaker about $150 – $350; replacing a safety switch (RCD) about $160 – $370; fault-finding a tripping circuit about $150 – $350. These are business-hours prices; after-hours call-outs cost more if the board fails at night.
When replacement is the better value
Ceramic (rewireable) fuses. These don't trip like a breaker and offer no shock protection.
No safety switches, or only one RCD covering a few circuits.
Scorching, melting, a burning smell or buzzing.
No space for new circuits, or you're adding an EV charger, solar or battery, air-con or an induction cooktop.
The board is on a black or brown panel in a pre-1990 home. These panels may contain asbestos, and Victorian guidance says only a lab test can confirm it. Drilling into them to add parts isn't safe.
Rental properties. Victoria's rental minimum standards require circuit breakers and switchboard-type safety switches, and the board is checked in the two-yearly rental electrical safety check.
Is there a middle option?
Sometimes. If your main board is sound but full, an electrician may add a sub-board (a small second switchboard) for new circuits such as air-con or an EV charger. This only makes sense when the existing board already has circuit breakers and safety switches. It's not a fix for a ceramic-fuse board. If the job also involves the meter or main supply fuse, your electricity distributor may need to be involved, which can add time.
The hidden cost of repairing an old board
Repairing a 40-year-old board can cost $300–$500 now and the same again next year, because other old parts keep failing. If a repair would cost more than about a third of a replacement, or the board has failed more than once in a year, replacement is usually the better value.
What we often see in older St Kilda and Elwood homes
A common call is a breaker that has "just stopped working" in a 1960s or 1970s flat. When the cover comes off, the board turns out to be a mix of ceramic fuses and one or two newer breakers, with no safety switches and signs of heat on the old fuse holders. In that case we explain both options with a price for each, and most owners choose a replacement because it fixes the safety problem as well as the fault.
Dean's tip: "Ask the electrician to price both the repair and the replacement. If the repair is more than a third of the replacement price, replacing is usually the smarter money."
What we'd never recommend
We'd never recommend putting thicker fuse wire in a ceramic fuse, taping over or bypassing a breaker that keeps tripping, or "patching" a board on a suspected asbestos panel. Heavier fuse wire stops the fuse from protecting the circuit and is a known cause of fires. Bypassing a breaker hides a fault. And drilling or cutting an asbestos panel releases fibres. If a board needs these kinds of fixes, it needs replacing.
Repair or replace? Quick checklist
Ceramic fuses? Replace
No safety switches? Replace
Heat, scorching, buzzing or burning smell? Replace (and call an electrician straight away)
Modern board, one failed part? Repair
Adding EV, solar or air-con soon? Replace with spare space
Get an honest answer on your board
We'll inspect your board, explain what needs fixing and what can wait, and give you a fixed written price for both options. Learn more about our switchboard upgrades and repairs in Melbourne, or call +61 418 281 517.
FAQs
How much does a switchboard repair cost in Melbourne?
Most switchboard repairs cost about $200 – $600, such as replacing a circuit breaker or safety switch. Fault-finding a tripping circuit usually costs about $150 – $350.
How do I know if my switchboard needs replacing?
Replace it if it has ceramic fuses, no safety switches, no spare space, signs of heat or burning, or sits on an old panel that may contain asbestos.
Can you just add a safety switch to an old switchboard?
Sometimes, if the board has circuit breakers and spare space. Boards with ceramic fuses usually need replacing to add proper RCD protection.
How long does a switchboard last?
A modern switchboard with circuit breakers and RCDs typically lasts several decades. Boards with ceramic fuses are usually 40 or more years old and well past replacement.
Is a switchboard replacement covered by insurance?
Usually only if the board was damaged by an insured event such as a storm or fire. Age-related wear and upgrades are normally not covered.
