A bigger breaker doesn’t solve the problem, it hides it. Here is what is really going on.
Overload
Too many powerful appliances share one circuit: kettle, microwave and coffee machine at once. The fix is a new separate circuit, not a bigger breaker.
Short circuit
A damaged cable or appliance causes a short. The breaker trips right after switching on. Unplug appliances one by one to find the culprit.
Moisture
An RCD reacts to leakage current. Moisture in an outdoor socket, a bathroom light or a junction box is often the cause.
Ageing breaker
Breakers wear out too. If it trips under a normal load, it may need replacing.
When to call
A burning smell, sparks, a warm socket or tripping with no visible cause means call an electrician. These are danger signs.