I don't know what the electrical regs are in Sweden, but if they permit, it may be worth investigating changing to an RCBO setup, where your main isolation switch is just that, and each circuit is protected by an individual MCB and RCD combined into one device (RCBO).
Assuming your house wiring isn't in MICC ( ) it should greatly reduce the chance of nuisance and accidental tripping...
I've tried both, and come to the conclusion that there exists a real risk of nuisance tripping when you have too small protected areas (as in single circuits) earth-fault-wise, especially if you're using grounded signal equipment like scopes and VTVMs. Or reasonably large sound systems. Therefore the entire panel is protected by a three-phase 40A RCCB. Main fuses are 20A so rating is no problem.
No MICC in sight; I don't think it's even permitted in Sweden. All wiring from this panel (which is a new sub-panel for the garage and workshop) is what's known as EKK (or EU type A05VV-U) in Sweden, or NYM-J in Germany. Approximate UK equivalent would be twin core and earth, but cross section is circular and the PE conductor carries insulation all along, and also is same area as the phase and neutral. It's sortakinda like US Romex, but all conductors are single-strand.