The distribution board (tableau électrique) is the brain of your home’s electrical system. When something goes wrong, it decides whether your family is safe or in danger. Here is what actually protects you — and what does not.
MCB (Miniature Circuit Breaker)
The most common breaker in Moroccan homes. Its job is to protect the cables from overheating due to overload or short circuit. Common ratings: 10A (lighting), 16A (sockets), 20A (kitchen), 32A (oven).
Important: an MCB does not protect you from electric shock. It protects the wiring in your walls.
RCD / RCCB (Differential Breaker)
This is the life-saver. An RCD detects when current is leaking to ground — for example, through a person touching a live wire — and cuts power in less than 30 milliseconds, before your heart stops.
Every Moroccan home should have at least one 30mA RCD covering all circuits. If yours does not, install one this week. Bathrooms and outdoor circuits legally require an RCD in most jurisdictions.
RCBO (Combined RCD + MCB)
Combines both functions in one module. More expensive per circuit, but if one circuit trips it does not take down the whole house. Increasingly common in modern installations.
Curve Type: B, C, or D?
- Curve B: Trips quickly. For pure resistive loads (lighting, heaters).
- Curve C: The default. Handles small motor and inductive spikes. Use this for most residential circuits.
- Curve D: Tolerates big inrush currents. For workshops, motors, welders.
The Test Button Matters
Every RCD has a test button labeled T. Press it once a month. If the RCD trips: it works. If it does not trip: replace it immediately — that device is not protecting you anymore.
Beware of Fake Breakers
Counterfeit breakers are everywhere in the market. They look identical to the originals but have no real protection inside. During a fault, they either fail to trip or catch fire themselves. Always buy from authorized dealers.