I'm with *steve* on one point: If you don't have a good understanding of mains power wiring, you shouldn't be working with it. But you might have a way to plug a module into your outlet, without messing with the mains wiring.
Most homes in North America now have circuit breakers instead of fuses for the mains power. Fuses are fusible links, components that used strips/wires of a metal that melts quickly when it is heated with too much current. Fuses must be replaced when they melt. Circuit breakers can be reset instead of replaced.
So I don't know if we're working with a mis-translation, or if the mains in your country still uses fuses. I'm a little out of date, but last time I was in Europe, not all mains systems were alike. I'm pretty sure, for example, that the older parts of Sevilla in España still use 115V instead of the 220V used in the newer parts. I've been gone too long to know if they upgraded from fuses to circuit breakers.
((I certainly hope so. Circuit breakers are harder to bypass by careless people. Last time I was in Seville, staying in my friend's apartment, a fuse kept blowing---so his best friend helpfully showed him how to bridge the fuse clamps with a butter knife. I pitched a fit and made him take it out; then tracked the problem to inside an electric iron that had managed to get a screw caught between the terminals of the OFF/ON switch. I probably prevented a building fire that day.))
Anyway, someone having your problem in North America might be able to use a
power strip, like these, that have their own circuit breaker.
http://www.ebay.com/sch/i.html?_fro...r+strip.TRS0&_nkw=power+strip+outlet&_sacat=0
I don't know if power strips are available in Croatia. You can search for that easier than I can. If they are, the power strip's circuit breaker might not pop open before your mains fuse blows (or before your mains circuit breaker pops open), but it's worth a try.
One other thing: If you can, work on your connectors
with the power off, and test for shorts before you plug it back in. If you don't have a multimeter, it's a worthwhile investment.
EDIT: I just checked online and found there is a "European power strip" (with built-in circuit breaker), so I guess the electrical mains are more standardized than when I was there. Don't ask, it's depressing to me to think of how long it's been.