DIN-rail mount CleanSweep® power line noise filters are specifically designed to provide clean power in control panels. They block EMI on real life power lines (both common mode and differential mode) from reaching your sensitive equipment. http://www.felcro.co.id When selecting filters by current rating, we recommend to leave some headroom for unexpected current surges and spikes: often rated current consumption for equipment does not take into account occasional overcurrent peaks which may cause filter’s circuit breaker to trip and to cut off power to your equipment. For example, use 10A filter with equipment rated no more than 8A just in case of such overcurrents.