A power trip Singapore, or circuit breaker trip — happens when Singapore’s built-in electrical safety system detects a fault and automatically cuts the power supply. This is your home protecting itself.
Inside every Singapore home, HDB flat, or condo, there is a DB box (Distribution Board) containing two types of protective devices:
A single trip that resets cleanly and does not recur is usually a minor event. A breaker that trips repeatedly, or trips the moment you reset it, is a warning sign of an active fault — and must be attended to by an EMA-licensed electrician before it causes an electrical fire or electrocution.
Singapore regulation: Under the Electrical Workers and Contractors Licensing Act, all electrical repair work beyond plug and bulb changes must be performed by an EMA-licensed electrician. Doing your own wiring work is illegal and voids your home insurance.
Understanding what caused your power trip helps you describe the problem accurately when you call — and may help you isolate a faulty appliance before the electrician arrives.
The most common cause. When you run too many high-draw appliances on the same circuit simultaneously — air-conditioner + water heater + washing machine — the total current draw exceeds the MCB’s rated capacity, and it trips. Older HDB flats built before 2000 are especially prone to this because their wiring was designed for fewer appliances.
What to do: Unplug all appliances on that circuit, reset the MCB, then plug them back in one at a time to identify which combination causes the trip.
A damaged water heater element, a failing air-conditioner compressor, or an old washing machine with degraded wiring insulation can cause current to leak to ground — tripping your RCCB. This is one of the most frequent causes of power trips in Singapore homes.
What to do: Unplug all appliances one by one and reset the RCCB after each. When the RCCB holds, the last appliance you unplugged is the culprit.
More serious than an overload. A short circuit occurs when a live wire touches a neutral wire or another live wire — either inside your wall wiring or inside an appliance. It causes a sudden, massive current surge that trips the MCB instantly.
Signs include a loud “pop” when the trip occurs, a burning smell, or discoloration around a power socket. Do not attempt to reset after a short circuit — call an electrician.
If your RCCB trips but your individual MCBs look fine, the problem is earth leakage. Current is escaping to ground somewhere — typically through a water heater, washing machine, or a socket exposed to moisture. This type of fault is invisible to the eye and requires an electrician with testing equipment to locate.
Singapore’s older HDB flats (25–40 years old) often have PVC wiring that has become brittle with age. When insulation cracks, live wires can make unintended contact. This is one of the harder faults to diagnose because the fault may be anywhere behind your walls.
Signs of wiring problems: Flickering lights, warm sockets, burning smell from walls, or trips that occur at no predictable pattern.
Circuit breakers are electromechanical devices with a rated lifespan. After 15–20 years, or after repeated trips, an MCB or RCCB may become faulty and trip at lower-than-rated current levels — or fail to trip at all. If your breaker trips under very light load, the breaker itself likely needs replacement.
Singapore’s humidity and the occasional leaking pipe or condensation drip can introduce moisture into your wiring, sockets, or DB box. Water dramatically lowers electrical resistance and triggers RCCB trips — or worse, creates electrocution hazards. If you notice water near your DB box or any socket that has been wet, cut the power at the main switch and call immediately.
Before calling MM Engineering Works, here is what you can safely do:
Step 1 — Stay calm. Do not force-reset repeatedly. Forcing a breaker that keeps tripping risks fire and equipment damage.
Step 2 — Check your DB box. Open it and look for any switch in the OFF or mid position. This identifies which circuit has tripped — whole house (main RCCB/ELCB) or a single circuit (MCB).
Step 3 — Unplug all appliances on the affected circuit. Pull plugs from sockets, not just switch them off. Pay special attention to water heaters, air-conditioners, washing machines, and dryers.
Step 4 — Try one reset. Push the tripped switch fully OFF, then flip it to ON. If power is restored and stable, plug appliances back in one at a time to find the culprit.
Step 5 — If it trips again immediately, stop. Do not touch it again. There is an active fault. WhatsApp MM Engineering Works at +65 8145 3954 — we respond within minutes.
We handle the full spectrum of power trip causes — from a simple MCB reset to full wiring fault diagnosis.
Power Trip Diagnosis & Fault Isolation We use professional testing equipment to pinpoint the exact fault — no guesswork, no unnecessary repairs. You are told what is wrong and why before we proceed.
MCB Replacement: A faulty or worn-out Miniature Circuit Breaker is replaced with a new, approved unit. Work is completed in 20–30 minutes in most cases.
RCCB / ELCB Replacement Earth leakage protection restored with a new Residual Current Circuit Breaker — ensuring your home is protected against electric shock.
DB Box Troubleshooting & Repair Full inspection of your Distribution Board — checking connections, testing each circuit, and identifying aging components before they fail.
Electrical Wiring Fault Tracing. For intermittent or recurring trips with no obvious cause, we trace faults through your wall wiring using non-invasive testing methods before any cutting or hacking.
Partial & Full House Rewiring For older HDB units with brittle PVC wiring that can no longer be safely repaired, we quote and carry out full rewiring to current standards.
Emergency Power Trip Response. For situations with no power, burning smells, or suspected serious faults, we prioritize your call and aim to reach you the same day.
We believe Singaporeans deserve to know the cost before any work begins. Here is our transparent pricing guide — no hidden charges, no surprises.
| Service | Price Range |
|---|---|
| Site visit + diagnostic inspection | From $60 (deducted from repair bill) |
| MCB replacement (single breaker) | $80 – $120 |
| RCCB / ELCB replacement | $120 – $200 |
| DB box wiring repair / re-termination | $120 – $250 |
| Electrical wiring fault tracing | $80 – $150 |
| Emergency / after-hours call-out surcharge | From $80 |
| Full DB box upgrade (old to new) | From $450 |
Note: Final price is confirmed on-site after inspection. Parts and labour included unless major rewiring is required, in which case a separate quotation is provided before any work proceeds.
Payment: PayNow to UEN 202302469E · OCBC Bank Transfer · Cash
HDB Flats HDB flats — especially those 20 or more years old — are the most common source of power trip calls in Singapore. Older wiring, fewer circuits, and the addition of modern appliances like inverter aircons and induction cookers push these systems to their limits. We are familiar with all HDB DB box configurations and can work within BTO and resale flat constraints.
Condominiums Condo electrical systems often have higher-spec wiring but are not immune to RCCB trips from faulty water heaters or appliances. We work within condo management requirements and handle all MCST compliance considerations.
Landed Properties Landed homes in Singapore carry heavier electrical loads across more circuits. Power trips in landed properties are often more complex — involving multiple sub-boards, larger DB boxes, and higher-capacity circuits. We are equipped to handle 3-phase systems and larger residential installations.
Light Commercial / Shophouses / F&B A power trip in a commercial space costs you revenue. We respond promptly to commercial calls and understand the urgency of getting your business back online. We serve F&B outlets, offices, retail units, and shophouses.
MM Engineering Works responds to power-trip calls throughout Singapore. We are based in Geylang and typically reach East, Central, and North-East Singapore fastest — but serve island-wide.
East Singapore: Tampines · Bedok · Pasir Ris · Simei · Changi · Geylang · Paya Lebar · Eunos · Kembangan · Katong · Marine Parade
North-East Singapore: Sengkang · Punggol · Hougang · Serangoon · Kovan · Buangkok · Compassvale
Central Singapore: Toa Payoh · Bishan · Ang Mo Kio · Novena · Queenstown · Clementi · Dover · Buona Vista
North Singapore: Woodlands · Yishun · Sembawang · Admiralty · Canberra
West Singapore: Jurong East · Jurong West · Bukit Batok · Choa Chu Kang · Boon Lay · Pioneer · Tengah
South Singapore: Tanjong Pagar · Bukit Merah · Harbourfront · Tiong Bahru · Alexandra
Can’t find your area? WhatsApp us — we cover all 28 planning areas.
EMA-Licensed. Fully Compliant. MM Engineering Works holds an EMA electrical contractor license (UEN: 202302469E). A qualified electrical worker carries out every job in accordance with the Singapore Code of Practice CP5 standards. You are legally protected.
We Diagnose Before We Charge. Unlike contractors who replace parts first and ask questions later, we test and diagnose first. You know exactly what is wrong and what it costs before we touch anything.
Upfront, Fixed Pricing: The price we quote is the price you pay. No overtime surprises. No “materials extra” ambiguity. Our pricing table above is what we actually charge.
Same-Day Response Most power trip jobs are same-day. We know a power trip is not a scheduled inconvenience — it disrupts your family, your work, your sleep. We act accordingly.
We Clean Up After Ourselves.s Electrical work can be messy. We use dust sheets, tidy our tools, and leave your home the way we found it — except with the power on.
Direct Communication with the Electrician When you WhatsApp MM Engineering Works, you reach Malek — the owner and qualified electrician —directly, not through call centers. No layers. Just clear, honest answers.
The most common causes of repeated power trips are overloaded circuits, faulty appliances (especially water heaters and aircons), earth leakage, ageing wiring, and a worn-out MCB or RCCB. If your breaker trips again immediately after resetting, stop resetting it and call a licensed electrician — it signals an active fault that can cause fire or electrocution.
Open your DB box and identify the switch in the OFF or middle position. Unplug all appliances on that circuit, push the switch fully to OFF, then flip it back to ON. If it trips again immediately, do not force it. Call MM Engineering Works at +65 8145 3954.
Power trip repair in Singapore typically costs $60–$350 depending on the fault. A site visit and diagnostic starts from $60 (credited against the repair bill). MCB or RCCB replacement costs $80–$200. MM Engineering Works provides upfront, fixed pricing — no hidden fees.
An MCB (Miniature Circuit Breaker) protects against overcurrent and short circuits. An RCCB (Residual Current Circuit Breaker) protects against earth leakage — current flowing to ground via a faulty appliance or damaged wiring. Both live in your DB box. If your RCCB trips but your individual MCBs are fine, a leaking appliance (water heater, washing machine) is usually the cause.
You can safely reset a tripped breaker once, and you can unplug appliances to isolate a faulty device. Beyond that, all electrical repair work in Singapore requires an EMA-licensed electrician under the Electrical Workers and Contractors Licensing Act. Attempting DIY wiring repairs is illegal and voids your HDB or condo home insurance.
Most power trip repairs are completed on-site within 30–90 minutes. Simple MCB or RCCB replacements take around 20–30 minutes. Complex faults involving wiring tracing may take 1–2 hours. We give you a time estimate when we arrive.
Yes, HDB flats are our most common job type. We work on all HDB flat types, including 2-room Flexi, 3-room, 4-room, 5-room, and executive apartments across Singapore.
A whole-house blackout in Singapore is either caused by an ELCB/main switch trip at your DB box or a fault at the SP PowerGrid level (external). First check your DB box — if the main switch has tripped, call us. If the main switch is ON and neighbors are also without power, contact SP PowerGrid at 1800-778-8888.
No. Unattended candles cause residential fires. Use battery-powered torches or LED emergency lights instead. Keep a torch accessible in your home — it is one of the simplest safety preparations you can make.
This is a classic RCCB trip pattern caused by a failing aircon compressor or a refrigerant leak that has allowed moisture into the electrical components. The aircon needs to be isolated and inspected. Do not keep resetting the breaker — repeated exposure to earth leakage can damage appliances and pose a shock risk.
Do not wait. Every minute without power is a minute your freezer is warming, your family is sitting in the dark, and the fault may be getting worse.
MM Engineering Works — Singapore’s EMA-licensed electrical contractor for power trip repair, diagnosis, and circuit breaker replacement.
Based in Geylang · Serving all Singapore 🕐 Monday – Saturday: 8am – 8pm · Emergency calls outside hours accepted 🏢 UEN: 202302469E | EMA Licensed Electrical Contractor 📧 contact@mmengine.com | 🌐 mmengine.com
