The FN 3026 HP-40-71 from Schaffner is a EMI / EMC Filter with Voltage Rating 300 to 520 V, Current Rating 40 to 43.8 A, Leakage Current 0.4 mA, Temperature operating range -25 to 100 Degree C. Tags: Chassis Mount. More details for FN 3026 HP-40-71 can be seen below.