The Qualtek Electronics part 850-20/004 is a powerful and efficient power line filter designed to effectively minimize electromagnetic interference (EMI) at 50Hz/60Hz frequencies. With a maximum current rating of 4A and a voltage rating of 250VAC, this filter offers reliable and consistent performance. The solder lug flange mount design ensures easy installation and secure connections. Ideal for a variety of applications, this power line filter is a must-have component for maintaining clean and interference-free electrical systems.