3-Phase Filters FN3268

EMC/RFI Filter for Installations with Residual Current Device (RCD)


EMC/RFI Filter for Installations with Residual Current Device (RCD)

  • Full functionality with RCDs according to IEC 61008 and new VDE 0664-110*
  • Compatible with 30 mA RCDs up to 30 m motor cable for electric shock protection according to IEC 61008
  • Compatible with 300 mA RCDs up to 100 m motor cable for fire protection according to IEC 60364-4-42 (VDE 0100-482)

Features and Benefits

Innovative low-leakage current filter with same smallest dimensions as FN 3258
Significant reduction of leakage and ground currents caused by long motor cables
Prevents unwanted fault shut-downs from RCDs in machines and process automation equipment
Patented filter design avoiding early saturation and ringing effects
Excellent attenuation compliant with: C1 limits EN 61800-3 with 30 meter motor cable and 30 mA RCD (electric shock protection)**
C2 limits EN 61800-3 with 100 meter motor cable and 300 mA RCD (fire protection)

Typical Applications

Three-phase variable speed drives (VSD), servo drives, and inverters
Machinery and process automation equipment
Building automation, HVAC equipment, pumps, ventilation, and elevators
Conveyors, handling and storage systems, and cranes
Machine tools, wood working machines, and printing machines

Technical Specifications

Maximum continuous operating voltage

3x520/300 VAC

Nominal operating voltage

480 VAC

Rated currents

7 to 180 A @ 50°C

Overload capability

4x rated current at switch on,

1.5x rated current for 1 minute, once per hour

Operating frequency

DC to 60 Hz

High potential test voltage

P –> E 2750 VDC for 2 sec

P –> P 2250 VDC for 2 sec

Temperature range (operation and storage)

-25°C to +100°C (25/100/21)

Protection category

IP 20

Flammability corresponding to

UL 94 V-0

Design corresponding to

UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939

MTBF (Mil-HB-217F)

>300,000 h @ 50°C/480 V

* If supply voltage is contaminated with harmonics according to IEC 61000-2-4, class 2, where odd-numbered multiplies of three are limited to 30%. ** Filter types 7 A up to 42 A: C1, 30 m, 30 mA; 55 A: C2, 30 m, 30 mA; 75 A up to 180 A: C2, 100 m, 300 mA

Typical electrical schematic


Approvals & Compliances

RoHS Label
UL Recognized Label
ENEC 14 Label
CSA Label
CE Label
UKCA Label