I used a pair of similar 47 uf 500 vac film caps from genelec for B+ supply in my H182 organ. Were rated for motor use. I'm tired of replacing electrolytic caps every 8 years. Were so big I had to mount them in a separate chassis. No problem. Ran a 600 v rated twinax cable to them, + versus return. Its been 11 years since I installed them.
They could certainly be used for motor runs, but are rated higher current for general purpose filtering. Would be a nice find if you found some surplus, cost a pretty penny at regular price. They’d never need replacement, even in highly stressful use.
