The FN3280H-300-99 from Schaffner is a EMI / EMC Filter with Voltage Rating 300 to 520 V, Current Rating 300 to 328 A, Leakage Current 42.1 mA, Temperature operating range -25 to 100 Degree C. Tags: Chassis Mount. More details for FN3280H-300-99 can be seen below.