RCCB / ELCB Keeps Tripping in KL Homes — Causes, Fixes & Cost in KL
Main RCCB trips repeatedly, especially when AC, water heater or multiple appliances are turned on.
Estimated professional fix: RM180–RM850+ depending on diagnosis and DB upgrade
An RCCB (earth-leakage circuit breaker) that keeps tripping is doing its job — something in the house is leaking current to earth, and the breaker is cutting power before a person or the wiring can be harmed. In KL homes the usual suspects are a failing appliance (water heater, induction hob, aircon) leaking a few milliamps, aged wiring where the insulation has cracked and wept moisture, water ingress into the distribution board after heavy rain, or a circuit quietly overloaded beyond what the breaker was sized for. What you should never do is keep resetting it: every reset is the fault still there, and a breaker that trips on demand is a fire and shock risk, not an inconvenience.
Common causes
Professional solutions
Safe DIY checks first
- 1Unplug major appliances one by one and test the breaker — if it stops tripping when a specific appliance is off, you have found the leak
- 2Look inside the DB box: any water marks, corrosion, or discolouration around the RCCB means water ingress
- 3Note the pattern: does it trip the moment a specific appliance starts, or only when several run together?
- 4Check for a burning smell or warm breaker casing — if either is present, stop resetting and switch the circuit off
When to call a pro
What affects the cost
A diagnosis visit with circuit-by-circuit isolation testing starts around RM180–RM350 and usually takes 30–60 minutes. Replacing a single faulty RCCB runs RM250–RM450 including parts; rewiring a faulty line or replacing a leaking appliance moves the job higher, and a full DB box upgrade with better load distribution sits at RM600–RM850+. All work is done by ST-registered wiremen, and the repair is covered by the standard workmanship warranty.
How to prevent it
Related service
This problem usually connects to Licensed Electrical Services. Review service scope, pricing, warranty, and process before booking.
View Licensed Electrical ServicesFAQs
Is it safe to keep resetting the RCCB?
No — repeated tripping indicates a real fault. Resetting without diagnosis can lead to fire or shock risk.
Can you fix RCCB tripping without changing the whole DB?
Often yes. We first isolate the faulty circuit and only replace the RCCB or rewire the affected line.
How long does diagnosis take?
Usually 30–60 minutes. We test each circuit systematically.
Do you provide ST-registered electricians?
Yes, all electrical work is handled by licensed wiremen registered with ST (Suruhanjaya Tenaga).