DATA  SHEET
3-Phase FiltersFN351H
General Purpose EMC Filter
25. Mar 2025
01. Jun 2002
3-Phase Filters
  • EMC solution for industrial inverters and motor drives
  • Rated currents from 8 to 180 A
  • Voltage level up to 520 V
  • High differential and common-mode attenuation

Performance indicators

Technical Specifications

Maximum continuous operating voltage

3x520/300 VAC

Nominal operating voltage

480 VAC

Rated currents

8 to 180 A @ 40°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 –> P 2250 VDC for 2 sec
P –> E 2750 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)

>135,000 h @ 40°C/480 V

Approvals & Compliances

Approvals up to 110 A

Features and Benefits

  • Broad range of power ratings for fast and convenient filter selection
  • FN351H filters provide a broadband common and differential-mode attenuation performance, which remains available also when high interference levels are present
  • Solid, touch-safe filter terminals contribute to overall equipment safety
  • Introduced as one of the very first motor drive EMC filters in the market, FN351H and its predecessor FN351 have been widely imitated and has successfully proven its function over more than 10 years

Typical Applications

  • Three-phase motor drives
  • Inverters and converters
  • Industrial automation equipment
  • UPS
  • SMPS
  • General purpose three-phase filtering

Typisches elektrisches Schaltbild

Filter selection table

Filter* 

Rated current 

Typical drive 

Leakage current*** 

Power loss 

Input/Output 

connections 

Weight 
 

@ 40°C (25°C) 

power rating** 

@ 440/520 VAC/50 Hz 

@ 25°C/50 Hz 
 

[A] 

[kW] 

[mA] 

[W] 

 [kg]
             
FN351H-8-29 

8 (9.2) 

4 

0.3 

7 

-29 

1.1
FN351H-16-29 

16 (18.5) 

7.5 

0.3 

8 

-29 

1.3
FN351H-25-33 

25 (28.9) 

15 

3.8 

8 

-33 

1.4
FN351H-36-33 

36 (41.6) 

18.5 

3.8 

9 

-33 

1.5
FN351H-50-33

50 (57.7) 

30 

3.8 

11 

-33 

1.6
FN351H-64-33 

64 (73.9) 

37 

3.8 

15 

-33 

1.7
FN351H-80-34 

80 (92.3) 

45 

4.4 

23 

-34 

5.6
FN351H-110-35 

110 (127) 

75 

4.4 

25 

-35 

5.8
FN351H-180-36 

180 (208) 

110 

4.4 

49 

-36 

13.0

*      To compile a complete part number, please replace the -.. with the required I/O connection style.
**   Calculated at rated current, 480 VAC and cos phi=0.8. The exact value depends upon the efficiency of the drive, the motor and the entire
       application.
*** Standardized calculated leakage current acc. IEC60939 under normal operating conditions at 520 VAC.

Typical filter attenuation

Per CISPR 17; A = 50 Ω/50 Ω sym; B = 50 Ω/50 Ω asym; C = 0.1 Ω/100 Ω sym; D = 100 Ω/0.1 Ω sym

8 A types

16 A types

25 A types

36 and 50 A types

64 A types

80 and 110 A types

180 A types

Mechanical data

8 and 16 A types

25 to 64 A types

80 and 110 A types

180 A type

Dimensions

 

8 A

16 A 

25 A 

36 A 

50 A 

50 A 

64 A 

64 A 

80 A 

110 A 

180 A 
 

 

      

(-33) 

(-34) 

(-33) 

(-34) 

      
A

200 

200 

200 

200 

200 

200 

200 

200 

400 

400 

 

510 
B

150 

150 

150 

150 

150 

150 

150 

150 

170 

170 

180 
C

65 

65 

65 

65 

65 

65 

65 

80 

90  

90 

133
D

120 

120 

120 

120 

120 

120 

120 

120 

350 

350 

360 
E

115 

115 

115 

115 

115 

115 

115 

115 

373 

373 

470 
F

136 

136 

136 

136 

136 

136 

136 

136 

130 

130 

156 
G

6.5 

6.5 

6.5 

6.5 

6.5 

6.5 

6.5 

6.5 

15 x 6.5 

15 x 6.5 

16 x 9 
H 1 1 1 1 1 1 1 1 1 1 4
I

17 

17 

25 

25 

25 

39 

25 

39 

39 

45 

83
J

M6 

M6 

M6 

M6 

M6 

M6 

M6 

M6 

M10 

M10 

M10 
K

19.25 

19.25 

19.25 

19.25 

19.25 

18.75 

19.25 

18.75 

40 

40 

 25
L

17 

17 

18.4 

18.4 

18.4 

17 

18.4 

17 

70 

70 

85 

All dimensions in mm; 1 inch = 25.4 mm
Tolerances according: ISO 2768-m / EN 22768-m

Filter input/output connector cross sections

 

-29 

-33 

-34 

-35 

-36 
 

Solid wire 

 6 mm2 16 mm2 35 mm2 50 mm2 95 mm2

Flex wire 

4 mm2

 10 mm2 25 mm2 50 mm2 95 mm2

AWG type wire 

AWG 10 

AWG 6 

AWG 2 

AWG 1/0 

AWG 4/0 

Recommended torque 

0.6-0.8 Nm 

1.5-1.8 Nm 

4.0-4.5 Nm 

7-8 Nm 

17-20 Nm 

Please visit www.schaffner.com to find more details on filter connectors.

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The content of this document has been carefully checked and understood. However, neither Schaffner nor its subsidiaries assume any liability whatsoever for any errors or inaccuracies of this document and the consequences thereof. Published specifica-tionsw are subject to change without notice. Product suitability for any area of application must ultimately be determined by the customer. In all cases, products must never be operated outside their published specifications. Schaffner does not guarantee the availability of all published products. This disclaimer shall be governed by substantive Swiss law and resulting disputes shall be settled by the courts at the place of business of Schaffner Holding AG. Latest publications and a complete disclaimer can be downloa-ded from the Schaffner website. All trademarks recognized.

 

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