What is a fuse box?
A fuse box, also known as a consumer unit, should always be easy to find. It is where the electricity in your home is controlled and distributed. It’s important that you know where your fuse box is in case you ever need to turn the electricity off in an emergency. A Consumer Unit contains three things – the main switch, fuses/circuit breakers (MCBs), and Residual Current Devices (RCDs).

Main Switch

what is a fuse box main-switch

Main switch allows you to turn off the electricity supply to your home.



Residual Current Devices (RCD) these are switches that trip a circuit under dangerous conditions, and instantly disconnect the electricity.



Circuit Breakers (MCBs) – these are automatic protection devices in the fuse box that switch off a circuit if they detect a fault. When they ‘trip’, you can simply reset the switch. But make sure you correct the fault first.
Fuses (may be found in place of circuit breakers) – rewritable fuses have a piece of special fuse wire running between two screws. When a fault or overload current flows through the fuse wire, it will become hot and melt. The melted fuse breaks the circuit, disconnecting the faulty circuit and keeping you safe.
If your MCB/RCD is tripping, never ignore as this can be a sign of circuit failure or fault, it may be a major fire hazard or a shock hazard. If you need more support or looking for expert Emergency Electricians please get in touch. Our team of best London Electricians will be with you in no time.