Schaffner FS21226-36-33 EMC Filter

Schaffner FS21226-36-33 EMC Filter is a three-phase power-line EMI suppression module designed for industrial drives, motor controllers, and control cabinets that demand robust noise attenuation on the mains input. Rated for 36 A and a voltage envelope of 520 VAC line-to-line / 300 VAC line-to-neutral, it operates at standard electrical frequencies of 50 or 60 Hz and is built as a compact, rugged RFI/EFI/EMI Noise Filter for demanding environments. Weighing approximately 1.75 kg, the unit is intended for installation at the power-entry stage of equipment where high-current three-phase filtering is required to reduce conducted emissions without compromising performance. As a general-purpose three-phase EMI filter, the FS21226-36-33 targets applications such as industrial automation panels, motor drives, and inverter-fed machinery, where filtering across the three live conductors plus protective earth helps maintain EMC compliance and minimize interference with nearby devices. Note: some catalog listings indicate this model has been discontinued by the manufacturer, which may affect current availability and support. The FS21226-36-33 is part of Schaffner’s line of EMC filters built to suppress conducted noise while handling relatively high line currents, making it suitable for cabinets and equipment with sizable power loads.