DATASHEET IEC Inlet Filters FN 370
Versatile Filtered Power Entry Module
Rated currents up to 6 A Approvals
Single or dual-fuse holder
Fuses Ø 6.3 x 32 mm or Ø 5 x 20 mm
Voltage selector 100/120/230/240 V
General purpose application
Optional medical versions (B type)
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.
Features and benefits
Good conducted attenuation performance, based
on chokes with high saturation resistance and
excellent thermal behavior
Technical specifications Rear/front or snap-in mounting
Single or dual-fuse holder
Maximum continuous operating voltage 250 V, 50/60 Hz USA Ø 6.3 x 32mm or EU Ø 5 x 20mm fuses
Operating frequency dc to 400 Hz Two attenuation performance ranges
Rated currents 2 to 6 A @ 40 °C max. Voltage selector 100/120/230/240 V
High potential test voltage P –> PE 2000 VAC for 2 sec (standard types) Custom-specific versions are available on request
P –> N 760 VAC for 2 sec
P –> PE 2500 VAC for 2 sec (B types) Typical applications
Protection category IP40 according to IEC 60529
Temperature range (operation and storage) -25 °C to +85 °C (25/85/21) Portable electrical and electronic equipment
Design corresponding to UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939 Consumer goods
Flammability corresponding to UL 94 V-2 or better EDP and office equipment
MTBF @ 40°C/230V (Mil-HB-217F) 550,000 hours Single-phase power supplies, switch-mode power
Voltage selector description VOL-SE 4SP-4 supplies
Function Series/parallel Test and measurement equipment
Voltage marking Medical equipment
1st 100
2nd 120
3rd 230 Typical electrical schematic
4th 240
Closed internal contact corresponding to
1st a, c, e
2st b, c, e
3st a, d
4st b, d
* Other selected voltage marking on request.
2 EMC/EMI Products Schaffner Group Datasheets 2015
Filter selection table
Filter* Rated current Leakage current** Inductance Capacitance Resistance Output Fuses*** Weight
@ 40 °C (25 °C) @ 230 VAC/50 Hz L Cx Cy R connections
[A] [μA] [mH] [nF] [nF] [kΩ] [Qty] [g]
FN 370-2-2.1 2 (2.4) 373 0.70 47 2.2 13 1 55
FN 370-4-2.1 4 (4.8) 373 0.30 47 2.2 13 1 55
FN 370-6-2.1 6 (7.2) 373 0.18 47 2.2 13 1 55
FN 372-2-2.2 2 (2.4) 373 0.70 47 2.2 13 2 55
FN 372-4-2.2 4 (4.8) 373 0.30 47 2.2 13 2 55
FN 372-6-2.2 6 (7.2) 373 0.18 47 2.2 13 2 55
FN 376-2-2.1 2 (2.4) 373 0.70 47 2.2 13 1 55
FN 376-4-2.1 4 (4.8) 373 0.30 47 2.2 13 1 55
FN 376-6-2.1 6 (7.2) 373 0.18 47 2.2 13 1 55
FN 378-2-2.2 2 (2.4) 373 0.70 47 2.2 13 2 60
FN 378-4-2.2 4 (4.8) 373 0.30 47 2.2 13 2 60
FN 378-6-2.2 6 (7.2) 373 0.18 47 2.2 13 2 60
FN 379-2-2.2 2 (2.4) 373 2.00 47 2.2 13 2 70
FN 379-4-2.2 4 (4.8) 373 0.80 47 2.2 13 2 70
FN 379-6-2.2 6 (7.2) 373 0.50 47 2.2 13 2 70
FN 379B-2-2.2 2 (2.4) 2 2.00 47 1000 13 2 70
FN 379B-4-2.2 4 (4.8) 2 0.80 47 1000 13 2 70
FN 379B-6-2.2 6 (7.2) 2 0.50 47 1000 13 2 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
For example: FN 370-6-21, FN 378-4-22, FN 379B-2-22
3 EMC/EMI Products Schaffner Group Datasheets 2015
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
FN 370 / FN 372 / FN 376 / FN 378 FN 379 6A Types only
Mechanical data
FN 370 / FN 372 FN 376 / FN 378 / FN 379
Connection designation Panel cut out
4 EMC/EMI Products Schaffner Group Datasheets 2015
Dimensions
FN 370 FN 372 FN 376 FN 378 FN 379 Tolerances
A 32 32 50 50 50 ±0.3
B 58 58 58 58 58 ±0.3
C 40 40 40 ±0.1
D 54 54 54 54 64.5
F 5.5 5.5 5.5 5.5 5.5
H Ø 3.3 Ø 3.3 Ø 3.3
J 12.5 12.5 12.5 12.5 12.5
M R≤2 R≤2 R≤2 R≤2 R≤2 ±0.1
N 55.9*/56.2** 55.9*/56.2** 55.9*/56.2** 55.9*/56.2** 55.9*/56.2** +0.2/-0
P 28.5 28.5 28.5 28.5 28.5 +0.2/-0
R M3 M3 M3
S 90° 90° 90°
U 9 9 9 9 9
* For a panel thickness between 0.8 and 3 mm.
** For a back panel thickness between 2.1 and 3.2 mm
All dimensions in mm; 1 inch = 25.4 mm
Tolerances according: ISO 2768-m / EN 22768-m
Please visit www.schaffner.com to find more details on filter connectors.
5 EMC/EMI Products Schaffner Group Datasheets 2015
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Schaffner:
FN372-6-22 FN372-2-22 FN370-2-21 FN370-2-22 FN370-4-21 FN370-4-22 FN370-6-21 FN370-6-22 FN372-2-
21 FN372-4-21 FN372-4-22 FN372B-2-21 FN376-4-21 FN376-4-22 FN378-2-21 FN378-2-22 FN378-4-21 FN378-
4-22 FN378-6-21 FN378-6-22 FN379-2-21 FN379-2-22 FN379-4-21 FN379-4-22 FN379-6-21 FN379-6-22
FN379B-2-21 FN379B-2-22 FN379B-4-21 FN379B-4-22 FN379B-6-21 FN379B-6-22 FN379B-6-32
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