The FN3258H-7-44 from Schaffner is a EMI / EMC Filter with Voltage Rating 277 to 520 V, Current Rating 7 to 7.7 A, Leakage Current 4.7 mA, Temperature operating range -25 to 100 Degree C. Tags: Chassis Mount. More details for FN3258H-7-44 can be seen below.