DATASHEET 3-Phase + Neutral Line Filters FN 3256 Compact Line Filter for Industrial Machinery/Equipment Compact, space-saving design, optimized for Approvals & Compliances industrial machinery Combines high attenuation performance with low leakage current Performance according to the machine tool standard EN 50370-1 Increases also the immunity if operated directly on the mains input Features and benefits An extremely compact and light weight filter design with a cubic shape, requiring minimum mounting space and thus taking the constructional conditions Performance indicators on the mains input of machinery into account Simple and time-saving installation with good accessibility for automatic and hand tools Solid, touch-safe terminal blocks offering sufficient contacting cross section according to the EN 60204-1 installation standard, which is very common in industrial applications As a mains input filter for three phases and neutral line, FN 3256 ensures the compliance with the new product family standard for machine tools in mainly industrial environments EN 50370-1. Further, its use will also increase the conducted immunity of the entire installation significantly Technical specifications FN 3256 provides the attenuation performance to meet the requirements of various machine tools 3x 520/300 VAC (480 VAC +10% possible) Maximum continuous operating voltage with up to 8 driving axes with ~10 m of motor cable Operating frequency DC to 60 Hz each Rated currents 8 to 160 A 50C For easy selection and application, the filter current High potential test voltage P/N > E 2750 VDC for 2 sec ratings are aligned with common fuse values P > P 2250 VDC for 2 sec P -> N 1300 VDC for 2 sec IP 20 Typical applications Protection category Overload capability 4x rated current at switch on, Mainly industrial equipment, machinery, machine 1.5x rated current for 1 minute, once per hour tools and diverse process auto- mation systems with -25C to +100C (25/100/21) Temperature range (operation and storage) three-phase and neutral electricity supply. Further, Flammability corresponding to UL 94 V-2 or better these filters are suitable for power supplies, high- Design corresponding to UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939 power office equipment and further applications, MTBF 50C/400 V (Mil-HB-217F) >410,000 hours where efficient interference suppression on three phases and the neutral line is required and where space is critical. Because of the very low leakage current, FN 3256 can even be used for some medical devices. Typical electrical schematic2 EMC/EMI Products Schaffner Group Datasheets 09 Dec 2021 Filter selection table Resistance** Filter Buy Rated current Leakage current* Power loss Resistance** Input/Output Weight 50C (40C) 520 VAC/50 Hz 25C/50 Hz R R1 connections kOhm A mA W kOhm kg FN3256H-8-29 8 (8.8) 0.6 2.7 1500 680 -29 0.6 FN3256H-16-29 16 (17.5) 0.6 5.0 1500 680 -29 0.7 FN3256H-25-33 25 (27) 0.6 9.8 1500 680 -33 1.1 FN3256H-36-33 36 (39) 0.6 11.3 1500 680 -33 1.2 FN3256H-64-34 64 (70) 0.6 17.2 1500 680 -34 2.3 FN3256H-80-35 80 (88) 0.6 14.5 1500 680 -35 3.5 FN3256H-120-35 120 (131) 0.9 25.0 1500 680 -35 4.7 FN3256H-160-40 160 (175) 1.3 26.9 1500 680 -40 5.7 FN3256H-8-29-R69 8 (8.8) 0.6 2.7 1500 10000 -29 0.6 FN3256H-16-29-R69 16 (17.5) 0.6 5.0 1500 10000 -29 0.7 FN3256H-25-33-R69 25 (27) 0.6 9.8 1500 10000 -33 1.1 FN3256H-36-33-R69 36 (39) 0.6 11.3 1500 10000 -33 1.2 FN3256H-64-34-R69 64 (70) 0.6 17.2 1500 10000 -34 2.3 FN3256H-80-35-R69 80 (88) 0.6 14.5 1500 10000 -35 3.5 FN3256H-120-35-R69 120 (131) 0.9 25.0 10000 -35 4.7 1500 FN3256H-160-40-R69 160 (175) 1.3 26.9 1500 10000 -40 5.7 * Standardized calculated leakage current acc. IEC60939 under normal operating conditions. ** Tolerances apply: Inductance: -30/+50%, Capacitance: 20%, Resistance: 10% Typical filter attenuation Per CISPR 17 A=50 /50 sym B=50 /50 asym C=0.1 /100 sym D=100 /0.1 sym 8 to 36 A types 64 and 80 A types 120 A types 160 A types