For systems to operate, a rated (DC) voltage (URdc) of 1000V must be applied internally.In order to power systems, you must have a rated (AC) voltage of 440V (URac).
R474R35605001-K Features
a rated (DC) voltage (URdc) of 1000V an internal rated (AC) voltage (URac) of 440V
R474R35605001-K Applications
There are a lot of KEMET R474R35605001-K applications of film capacitors.