3-Phase Filters FN3258

Ultra-compact EMC/RFI Filter for Motor Drives Applications


Ultra-compact EMC/RFI Filter for Motor Drives Applications

  • New: solid safety connector blocks available for the whole range
  • Exceptional attenuation performance from 150 kHz to 30 MHz
  • Excellent saturation resistance up to 50 m cable length
  • Most compact and slim filter design in its class

Features and Benefits

The extremely compact and slim filter design allows a trouble-free installation even where the available mounting space is minimal
With new additional filter types providing safety terminal blocks, the most preferred connection style can be chosen fast and easy. This helps to stay in line with the electrical connection concept of a given application
FN 3258 filters ensure compliance with Class A limits according to EN 55011 up to 50 m cable length and beyond. Further they can contribute significantly to meet conducted emission limits according to Class B
Filter operation on the mains input side of consumers increases their reliability and conducted immunity significant
Chokes with exceptional saturation resistance and excellent thermal behavior are a vital part of FN 3258 design. Thus, all filters retain the expected filter performance even in very noisy applications and under full load conditions

Typical Applications

Three-phase variable speed motor drives, servo drives, inverters and converters
Applications comprising energy conversion devices like machines or process automation equipment
HVAC equipment, elevators, power supplies, UPS and further three-phase applications

Technical Specifications

Maximum continuous operating voltage

3x520/300 VAC (FN 3258 H)

3x480/277 VAC (FN 3258)

Nominal operating voltage

480 VAC (FN 3258 H)

400 VAC (FN 3258)

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 2650 / 2750 VDC for 2 sec (FN 3258 / FN 3258H)

P –> P 2100 / 2250 VDC for 2 sec (FN 3258 / FN 3258H)

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

Typical electrical schematic


Approvals & Compliances

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