Schaffner FN354-4-05 Electromagnetic Interference Filter

Schaffner FN354-4-05 electromagnetic interference filter is a single-phase EMI/RFI line filter designed to suppress conducted noise on mains supplies in electrical equipment. Rated for 4 A continuous current and up to 440 VAC, it features FASTON input and FASTON output terminals for quick panel wiring in control panels and motor-drive assemblies. As part of Schaffner's FN354 family, this compact unit provides effective attenuation of high-frequency interference without compromising normal operation of power electronics, meeting common EMC requirements for industrial equipment. Typical applications include motor drives, programmable logic controllers, power supplies, CNCs, and other automation equipment where a compact, ready-to-wire filter is advantageous. The FN354-4-05 is listed to relevant safety and EMC standards, including UL 1283 and CSA C22.2 No. 8, and carries CE marking suitable for many markets; it is documented as RoHS-compliant in Schaffner’s materials, aligning with environmental and safety expectations in modern assemblies. This model offers a balance of modest current capability and higher-voltage filtering appropriate for mid-power systems, enabling engineers to address conducted emissions at the source in a plug-in style filter without altering downstream circuitry.