I'm replacing a ceramic disc cap. and I need someone to translate for me.
I need to know what this means:
472M
KY250
x1y2(?)
Any help would be appreciated.
No, capacitance and the voltage rating of a capacitor are completely different. Capacitance is what it "is" when it operates, and voltage rating is what "what conditions it can operate under".
The cap you have is safety rated and what you need to buy varies with where you live. Chances are you want to look for a 250VAC VDE (i don't remember what VDE stands for exactly, it is the german standards agency) cap.