remains available also when high interference levels
are present
Solid, touch-safe filter terminals contribute to overall
equipment safety and make the filters compliant
with IEC 60950
Introduced as one of the very first motor drive EMC
filters in the market, FN 351 has been widely
imitated and has success- fully proven its function
over more than 10 years
3x 440/250 VAC (FN 351)
3x 520/300 VAC (FN 351H)
dc to 60 Hz
8 to 280 A @ 40 °C
Technical specifications
Maximum continuous operating voltage
Operating frequency
Rated currents
Typical applications
Three-phase motor drives
Inverters and converters
UPS
Industrial automation equipment
SMPS
High potential test voltage
P –> E 2600 VDC for 2 sec (FN 351)
P –> P 1900 VDC for 2 sec (FN 351)
P –> E 2750 VDC for 2 sec (FN 351H)
Protection category
Overload capability
P –> P 2250 VDC for 2 sec (FN 351H)
IP20
Temperature range (operation and storage)
Flammability corresponding to
Design corresponding to
4x rated current at switch on,
1.5x rated current for 1 minute, once per hour
-25 °C to +85 °C (25/085/21) (FN 351)
-25 °C to +100 °C (25/100/21) (FN 351H)
General purpose three-phase filtering
Typical electrical schematic
MTBF @ 40°C/400V (Mil-HB-217F)
UL 94 V-2 or better
UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939
135,000 hours
2
EMC/EMI Products
Schaffner Group
Datasheets
2014
Filter selection table
Filter*
@ 40 °C (25 °C)
8 (9.2)
[A]
Rated current
power rating**
Typical drive
[kW]
Leakage current***
@ 400 VAC/50 Hz
[mA]
1.9
@ 25 °C/50 Hz
[W]
7
Power loss
Input/Output
connections
-29
-33
-33
Weight
[kg]
FN 351-8-29
FN 351-16-29
FN 351-25-33
FN 351-36-33
FN 351-50-..
FN 351-64-..
16 (18.5)
25 (28.9)
36 (41.6)
50 (57.7)
64 (73.9)
110 (127)
180 (208)
280 (323)
8 (9.2)
80 (92.3)
5.5
11
15
22
30
37
55
90
3
28.0
28.0
29.5
29.5
31.8
31.8
29.6
35.7
2.3
1.9
8
8
9
-29
0.8
1.4
-34
-34
1.5
1.3
11
15
23
25
49
70
7
-33
-33
-34
-35
-36
-37
1.6
1.7
FN 351-80-34
FN 351-110-35
FN 351-180-36
FN 351-280-37
FN 351H-8-29
5.6
132
4
13.0
5.8
28.0
1.1
FN 351H-16-29
FN 351H-25-33
FN 351H-36-33
FN 351H-50-..
FN 351H-64-33
FN 351H-80-34
FN 351H-110-35
FN 351H-180-36
FN 351H-280-37
16 (18.5)
25 (28.9)
36 (41.6)
50 (57.7)
64 (73.9)
110 (127)
180 (208)
280 (323)
80 (92.3)
7.5
18.5
30
37
45
75
15
32.7
32.7
32.7
38.0
2.3
8
-29
32.7
8
-29
11
15
23
9
-33
1.3
-33
-33
-34
-33
1.4
-34
1.5
1.7
5.6
1.6
110
160
38.0
35.6
42.9
25
49
70
-35
-36
-37
13.0
28.0
5.8
* To compile a complete part number, please replace the -.. with the required I/O connection style.
** Calculated at rated current, 400 VAC (FN 351)/480VAC (FN 351H) and cos phi = 0.8. The exact value depends upon the efficiency of the drive, the motor and the entire
application.
*** Maximum leakage under normal operating conditions (FN 351 at 400 V, FN 351H at 480 V).
Note: if two phases are interrupted, worst case leakage could reach 6 times higher levels.
Typical filter attenuation
8 A types
Per CISPR 17; A = 50 Ω/50 Ω sym; B = 50Ω/50Ω asym; C = 0.1 Ω/100 Ω sym; D = 100 Ω/0.1 Ω sym
16 A types
25 A types
36 and 50 A types
64 A types
80 and 110 A types
180 A types
280 A types
3
EMC/EMI Products
Schaffner Group
Datasheets
2014
Mechanical data
8 and 16 A types
25 to 64 A types
80 and 110 A types
180 and 280 A types
4
EMC/EMI Products
Schaffner Group
Datasheets
2014
Dimensions
8A
A
B
C
E
F
180
60
85
8A
(-H)
200
65
150
16 A
200
65
25 A
200
65
36 A
200
65
50 A
(-33)
115
150
150
150
200
65
50 A
(-34)
150
200
65
64 A
(-33)
150
200
65
64 A
(-34)
80 A
400
90
110 A
400
90
180 A
510
130
280 A
700
150
200
80
150
170
170
180
D
115
100
6.5
17
13
1
120
115
136
6.5
17
1
120
115
136
6.5
17
1
120
115
136
6.5
25
1
120
115
136
6.5
25
1
120
115
136
6.5
25
1
120
115
136
6.5
39
1
120
115
136
6.5
25
1
120
115
136
6.5
39
1
350
373
130
1
350
373
130
1
360
155
260
470
156
4
530
660
220
4
H
I
J
G
15 x 6.5
39
15 x 6.5
16 x 9
16 x 9
K
L
M6
17
19.25
17
M6
19.25
17
M6
19.25
18.4
M6
19.25
18.4
M6
19.25
18.4
M6
18.75
17
M6
19.25
18.4
M6
18.75
17
M6
M10
40
M10
45
70
40
M10
85
70
85
25
M10
110
30
100
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
-37
Solid wire
Flex wire
AWG type wire
Recommended torque
6 mm
2
AWG 10
4 mm
2
16 mm
2
10 mm
2
1.5-1.8 Nm
AWG 6
35 mm
2
25 mm
2
4.0-4.5 Nm
AWG 2
50 mm
2
AWG 1/0
7-8 Nm
50 mm
2
95 mm
2
AWG 4/0
95 mm
2
150 mm
2
150 mm
2
27-30 Nm
AWG 6/0
0.6-0.8 Nm
17-20 Nm
Please visit www.schaffner.com to find more details on filter connectors.
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