A typical fuse box in a modern home contains a combination of Miniature Circuit Breakers (MCB) and Residual Current Devices (RCD). Together they protect electrical circuits from overload and humans from risk of a fatal electric shock.
For the last 10 years the most common installation usually consists of what is referred to as a split load, with 2 RCD's protecting multiple MCB's
This combination splits your home into 2 zones each protected by a single RCD. This is cost effective but creates an issue if one thing in a circuit causes half the house to get tripped. It's usually fairly easy to trace the problem, identify the culprit and take whatever action is required to restore your circuits to full working order.