The FN 354-4-05 from Schaffner is a EMI / EMC Filter with Voltage Rating 250 to 440 V, Current Rating 4 to 4.5 A, Leakage Current 0.1 mA, Temperature operating range -25 to 100 Degree C. Tags: Chassis Mount. More details for FN 354-4-05 can be seen below.