Filter Concepts 3E20-F 3X20A EMI Filter 250/440VAC 50/60Hz Three Phase

Filter Concepts 3E20-F 3X20A EMI Filter 250/440VAC 50/60Hz Three Phase

The Filter Concepts 3E20-F is a three-phase EMI (electromagnetic interference) line filter rated at 20 amps per phase. It is designed to suppress conducted electromagnetic noise on AC power lines, protecting sensitive equipment from interference originating on the mains and preventing noise generated by the load from feeding back into the power supply. The unit carries UL and CSA certifications and connects via screw terminals labeled A, B, C (phases) and N (neutral), with a separate ground stud.

Specifications & What's Included

• Manufacturer: Filter Concepts
• Model: 3E20-F
• Configuration: 3X20A (three phases, 20A per phase)
• Voltage Rating: 250/440VAC
• Frequency: 50/60Hz
• Phase: Three-phase
• Termination: Screw terminals — Line side: N, A, B, C; Load side: N, A, B, C; plus ground stud
• Certifications: UL Listed, CSA Listed
• Date Code: 9744 / 7143
• Packaging: Original cardboard box (open)

Applications

Three-phase EMI line filters like the 3E20-F are standard components in industrial power distribution systems where conducted electromagnetic interference must be controlled. They are commonly installed at the power input of variable-frequency drives (VFDs), servo drives, CNC machine tools, industrial automation equipment, motor controllers, and other three-phase loads that either generate or are susceptible to conducted RFI/EMI on the power bus. The 250/440VAC dual-voltage rating makes the 3E20-F suitable for both North American 208–240V three-phase systems and European or international 380–440V three-phase systems. At 20A per phase, this filter is sized for mid-range industrial equipment draws. Filter Concepts is a California-based manufacturer that has supplied EMI/RFI filters to industrial and mil/aero markets for decades.