For systems to operate, a rated (DC) voltage (URdc) of 800V must be applied internally.In order to power systems, you must have a rated (AC) voltage of 330V (URac).
R49AW447050B1-M Features
a rated (DC) voltage (URdc) of 800V an internal rated (AC) voltage (URac) of 330V
R49AW447050B1-M Applications
There are a lot of KEMET R49AW447050B1-M applications of film capacitors.