ELCB, RCD, CB's what do I need to be safe?

[Paul36x]

I'm from Holland and the idea my electrical installation wasn't safe never crossed my mind. I live in Thailand now and things are a bit different here, something I first noticed when my first pc was fried. It was then I had the sockets replaced and ground and put a surge protection unit in between, nothing I'd ever heard of before...

So in Holland we have these white cillinders things called "stoppen" that jump when something is wrong and you replace them. Here I have a box with 3 circuit breakers. My shower heater has an ELCB button.

I also read about the existence of RCD but I don't have that here. Am I safe like this or do I need to install other things apart from 3 circuit breakers and a shower heater with ELCB?

 

[Des 56]

An elcb is the older name used to describe an rcd
It used to be currrent and voltage operated
Depending on how old it is, will determine usually if its current or voltage operated

If the system is fairly modern.the likelyhood would be that it is an rcd