@RedBaron: Thank you. I really think that such widely used element should be present in the standard QET collection.
@scorpio810: Sorry, you were right. I finally found it in the area that you pointed, it is called "Conmutateur bipolaire NO" in French, with the spelling mistake included!
- I didn't find it because I was searching for "switch", "contact", or "inter". With the spelling mistake in the name, I wouldn't have found it.
- There is no English description for that element, so the name was by default taken from language "ro" (the last one in the table probably). Isn't there a well defined fallback when the current language is not available? I think default fallback should be English (universal language today) or French (main language of the developers).
- There should be an English description for every element. Is there a repository to contribute for this?
- The link between the two switches of the "Conmutateur bipolaire NO" DPST switch is not drown in a standard way, is it? It should be a dashed line, as RedBaron and Wikipedia drew, no?