Schaffner FN3258-30-33 Industrial EMI Line Filter

Schaffner FN3258-30-33 is a three-phase EMI/RFI line filter built for industrial power electronics to suppress conducted interference on three-phase mains. It is rated for 30 A and supports up to 480 VAC in a delta configuration (3 wires plus ground), with input and output screw-terminal blocks designed for chassis-mount installations. The unit specifies a maximum leakage current of 33 mA, a common figure for FN3258-series filters, helping minimize stray currents while protecting sensitive equipment. As part of the ultra-compact FN3258 family, this filter is commonly used in motor drives, machine tools, and robotics to meet EMI/EMC requirements in demanding industrial environments.