Franc Zabkar wrote:

Eeyore put finger to keyboard and composed:
Franc Zabkar wrote:
Franc Zabkar put finger to keyboard and composed:
Eeyore put finger to keyboard and composed:

SCHALTER-TAST 4XUM 1 switch 4pdt

I suspect 4xUM means 4PDT, and SCHALTER-TAST means switch-tactile.

http://www.babylon.com/definition/Tastschalter/English

Tastschalter

n. push button, press button, electric switch that operates via a
pressing

Indeed it is.

After some searching, it appears that the term "4xUM" is often
associated with relays.

I now believe that "UM" is an abbreviation for "umschaltung" which
translates to "changeover".

That makes perfect sense.


See http://www.dict.cc/german-english/Umschaltung.html

So 4xUM = 4PCO = 4PDT, ie you have a pushbutton switch with 4 pole
changeover contacts. But of course you already knew that from the
outset ... :-)

BTW, my favourite switch lubricant/cleaner is Philips 390CCS.

I think these 2 are way beyond that.

Graham