Feedthrough capacitors are widely used for AC/DC supply lines to help lower harmful interference. Normal standard capacitors are not really suitable for filtering applications as they can introduce high impedance, feedthrough capacitors do not have this issue. High current feedthrough capacitors are mainly used in high-power applications and are usually connected to high voltage and high energy circuits so extra caution is needed.
RS have a great range of feedthrough capacitors with various capacitance and current ratings to meet all your filtering requirements.
Feedthrough capacitors are used in various circuits