FN3256 & FN3280 3-Phase + Neutral Line Filters Schaffner FN3256 and FN3280 3-Phase + Neutral Line Filters come in a compact, space-saving design that is optimized for industrial machinery. Both series feature an R69 option for easy compliance to IEC 60204-1 (DIN VDE 0113). Products with the R69 suffix are suitable for complex machines where the overall insulation resistance needs to be higher than 1MΩ. Schaffner FN3256 and FN3280 3-Phase + Neutral Line Filters combine high attenuation performance with low leakage current and solid, touch-safe terminal blocks. They offer simple, time-saving installation with good accessibility for automatic and hand tools. Applications include industrial equipment, machinery, machine tools, high-power office equipment, and diverse process automation systems with 3-phase and neutral electricity supplies.