IEC inlet filters
FN 370
Versatile filtered power entry module
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Rated currents up to 6A
Single or dual-fuse holder
Fuses Ø6.3 x 32mm or Ø5 x 20mm
Voltage selector 100/120/230/240V
General purpose application
Optional medical versions (B type)
Approvals
Technical specifications
Maximum continuous operating voltage:
Operating frequency:
Rated currents:
High potential test voltage:
250VAC, 50/60Hz
dc to 400Hz
1 to 6A @ 40°C max.
P –> E 2000VAC for 2 sec (standard types)
P –> E 2500VAC for 2 sec (B types)
P –> N 760VAC for 2 sec
IP40 according to IEC 60529
-25°C to +85°C (25/85/21)
UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939
UL 94V-2 or better
550,000 hours
VOL-SE 4SP-4
Series/parallel
Typical electrical schematic
FN 370 / FN 376
Cx
N
E
P
Line
L J
2xL
2xCy M
Voltage selector
F
E
e
d
D
C
c
Fuse
holder
b
B
A
a
G
Load
Protection category:
Temperature range (operation and storage):
Design corresponding to:
Flammability corresponding to:
MTBF @ 40°C/230V (Mil-HB-217F):
Voltage selector description:
Function:
Voltage marking*:
1st:
2nd:
3rd:
4th:
Closed internal contact corresponding to:
1st:
2nd:
3rd:
4th:
*
Other selected voltage marking on request.
FN 372 / FN 375 / FN 378 / FN 379
Cx
N
2xL
2xCy M K
Voltage selector
H F
E
e
d
D
C
c
Fuse
holders
b
B
A
a
G
Load
100
120
230
240
a, c, e
b, c, e
a, d
b, d
E
P
Line
L J
Features and benefits
The FN 370 power entry module combines an
IEC inlet, a mains filter with a single or dual-
fuse holder and a voltage selector. Choosing
FN 370 product line brings you the rapid
availability of a standard filter associated with
the necessary safety acceptances. Standard
IEC connector filters are a practical solution
helping you to pass EMI system approval in
a short time. A wide selection on amperage
ratings, fuse options, mounting possibilities
and filters for medical applications are
designed to offer you the desired solution.
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Typical applications
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Good conducted attenuation performance,
based on chokes with high saturation
resistance and excellent thermal behavior.
Rear/front or snap-in mounting.
Single or dual-fuse holder.
USA Ø6.3 x 32mm or EU Ø5 x 20mm fuses.
Two attenuation performance ranges.
Voltage selector 100/120/230/240V.
Custom-specific versions are available on
request.
Portable electrical and electronic
equipment
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Consumer goods
EDP and office equipment
Single-phase power supplies, switch-mode
power supplies
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Test and measurement equipment
Medical equipment
> Components
> FN 370
Filter selection table
Filter*
Rated current Leakage current**
@ 40°C (25°C)
@ 230VAC/50Hz
[A]
2 (2.4)
4 (4.8)
6 (7.2)
2 (2.4)
4 (4.8)
6 (7.2)
2 (2.4)
4 (4.8)
6 (7.2)
2 (2.4)
4 (4.8)
6 (7.2)
2 (2.4)
4 (4.8)
6 (7.2)
2 (2.4)
4 (4.8)
6 (7.2)
2 (2.4)
4 (4.8)
6 (7.2)
2 (2.4)
4 (4.8)
6 (7.2)
[μA]
373
373
373
373
373
373
373
373
373
373
373
373
373
373
373
373
373
373
2
2
2
2
2
2
Inductance
L
[mH]
0.70
0.30
0.18
0.70
0.30
0.18
2.00
0.80
0.50
0.70
0.30
0.18
0.70
0.30
0.18
2.00
0.80
0.50
2.00
0.80
0.50
2.00
0.80
0.50
Capacitance
Cx
Cy
[nF]
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
47
[nF]
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
2.2
1000
1000
1000
1000
1000
1000
Resistance
Output
R connections
[kΩ]
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
Fuses***
Weight
FN 370-2-2.
FN 370-4-2.
FN 370-6-2.
FN 372-2-2.
FN 372-4-2.
FN 372-6-2.
FN 375-2-2.
FN 375-4-2.
FN 375-6-2.
FN 376-2-2.
FN 376-4-2.
FN 376-6-2.
FN 378-2-2.
FN 378-4-2.
FN 378-6-2.
FN 379-2-2.
FN 379-4-2.
FN 379-6-2.
FN 375B-2-2.
FN 375B-4-2.
FN 375B-6-2.
FN 379B-2-2.
FN 379B-4-2.
FN 379B-6-2.
*
**
[Qty]
1
1
1
2
2
2
2
2
2
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
[g]
55
55
55
55
55
55
65
65
65
55
55
55
60
60
60
70
70
70
65
65
65
70
70
70
Select the requested fuse holder for fuse EUR-1 or USA-1.
Maximum leakage under normal operating conditions. Note: if the neutral line is interrupted, worst case leakage could reach twice this level.
*** Filters are delivered without fuse.
Product selector
FN 37xx-y-zz
1:
2:
Fuse Ø5 x 20mm (FUSE-H EUR-1)
Fuse Ø6.3 x 32mm (FUSE-H USA-1)
2:
Voltage selector, series / parallel 100/120/230/240V
1 to 6:
Rated current
Blank:
B:
Standard version
Medical version (with bleed resistor and without Y2-capacitor)
0:
2:
5:
6:
8:
9:
Snap-in version, single-fuse, standard performance
Snap-in version, dual-fuse, standard performance
Snap-in version, dual-fuse, high performance
Flange mounting version, single-fuse, standard performance
Flange mounting version, dual-fuse, standard performance
Flange mounting version, dual-fuse, high performance
For example: FN 370-6-21, FN 378-4-22, FN 375B-2-22
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