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DB Box Replacement
EMA & SS638 Compliant
RCD / RCCB Upgrade
DB Box Replacement & Circuit Breaker Services Singapore
Upgrade outdated distribution boards, replace faulty MCBs & RCD safety switches, and protect your home from sudden electrical trips and short circuits.
Why Choose SC Electrician
EMA Licensed Electricians
All DB board replacements are tested and certified under Singapore safety standards.
Safety Shock Protection
High-sensitivity RCD / RCCB devices installed to prevent dangerous current leakage.
Transparent Package Pricing
Clear pricing upfront covering the board, breakers, labor, and safety testing.
Fast Same-Day Turnaround
Most DB replacement jobs are completed within 2 to 4 hours with minimal downtime.
DB Box & Circuit Breaker Pricing Table
Clear, fixed package rates for distribution board replacements and individual breaker repairs
| Service Description | Scope Included | Price Range (SGD) |
|---|---|---|
| Single-Phase DB Box Replacement (Standard HDB) | New distribution box enclosure, Main Switch, RCD/ELCB, and 8-12 MCB breaker switches. | $280 – $380 |
| Single-Phase DB Box Replacement (Large / Condo) | High-way enclosure, main isolation switch, RCD, and 14-20 MCB breakers. | $380 – $520 |
| 3-Phase DB Box Upgrade (Landed / Commercial) | 3-Phase main switch, 4-Pole RCCB, complete set of single & triple pole MCBs. | $750 – $1,200 |
| Individual MCB Breaker Replacement | Replacement of burnt, loose, or tripping Miniature Circuit Breaker (per unit). | $50 – $80 |
| RCD / ELCB Safety Switch Replacement | Replacing non-responsive or faulty Residual Current Circuit Breaker. | $90 – $150 |
| DB Box Load Balancing & Cable Tidy | Rewiring messy distribution box, balancing phase loads, and terminal tightening. | $120 – $220 |
* Note: Final price depends on total way count (number of breaker slots), phase type (single phase vs 3-phase), and brand of circuit breaker specified (e.g., Hager, ABB, Schneider).
Our Distribution Board Solutions
Comprehensive electrical protection services for homes, offices, and retail premises
Full DB Box Replacement
Complete removal of old or damaged fuse boxes and installation of modern, flame-retardant enclosures with fresh breakers.
MCB Breaker Replacement
Replacing faulty or defective Miniature Circuit Breakers (MCB) that trip frequently under normal household power loads.
RCD / RCCB Safety Upgrades
Installing high-sensitivity residual current devices (30mA) to ensure fast shutoff during electric leakage or shock hazards.
Load Balancing & Neat Cable Dressing
Re-organizing congested wiring inside the DB unit to balance current distribution across all residential sub-circuits.
Burnt Terminal & Wire Repair
Emergency repair of overheated busbars, melted neutral links, and loose terminal connections causing burning smells.
Safety Inspection & Testing
Comprehensive insulation resistance and trip speed testing to ensure your DB box satisfies standard EMA safety regulations.
Our 4-Step DB Replacement Process
Efficient, systematic procedure ensuring minimal downtime for your home power supply
Step 01
DB Assessment & Quote
Send us a photo of your existing DB box on WhatsApp. We confirm way count, phase type, and issue a clear upfront quote.
Step 02
Main Isolation & Safe Removal
Our licensed electrician shuts off the main supply, verifies zero voltage, and safely disconnects old circuit breakers.
Step 03
Enclosure Mount & Component Wire
We mount the new enclosure, fit fresh MCBs, main switch, and RCD, then neatly trace and terminate each circuit line.
Step 04
RCD Testing & Power Restore
We perform trip speed and ground safety tests, restore power room by room, and provide clear circuit labels on the board.
Frequently Asked Questions
How do I know if my DB box needs replacement?
Signs include frequent unprovoked power trips, burning smells coming from the box, warm breaker switches, buzzing/crackling sounds, visible corrosion, or if your DB box uses obsolete plug-in fuses rather than modern circuit breakers.
How long will the power be turned off during DB replacement?
For a standard single-phase HDB or Condo flat, total power shutoff usually lasts between 2 to 3 hours while the new breakers are being mounted and re-wired.
What is the difference between an MCB and an RCD/RCCB?
An MCB (Miniature Circuit Breaker) protects wires from current overloads and short circuits. An RCD (Residual Current Device) protects human lives by cutting off power instantly when current leakage is detected, preventing electric shocks.
Real Electrical Work
Recent Completed Electrical Jobs
Examples of electrical panels, distribution boards and circuit-protection work completed by our team.
Customer Feedback
What Customers Say About Our Service
Feedback messages received after electrical service appointments.
Customer message
“Thanks for the help. The guy was very nice and helpful.”
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Customer message
“Your guy is very polite and nice, explained in detail and checked everything carefully.”
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