DATASHEET
IEC Inlet Filters FN 9255
High performance dual-stage IEC C14 and C20 inlet filter
Rated currents up to 20 A
Excellent performance/size ratio
IEC C14 or C20 inlet acc. IEC 60320-1
Medical versions (B type) acc. to IEC/EN
60601-1
Snap-in and rear mount versions (S and M
type)
Earth line choke version (Refer to FN9255 E)
Approvals
Performance indicators
The FN9255 IEC inlet filter incorporates a dual stage
filter into an IEC inlet that offers excellent filter
attenuation in a compact housing. Using an IEC inlet,
at the point of entry offers an optimized position and
practical solution for integrating an EMC filter into any
system. A wide selection of current ratings, output
connections and mounting possibilities are available.
The filter family also offers options that comply to
medical application requirements and the entire
family complies to all necessary safety approvals.
{GPvar:L}
Features and benefits
Exceptional attenuation performance from 150kHz
to 300MHz due to dual-stage design
Technical specifications
Maximum continuous operating voltage
Rated currents
Operating frequency
Approvals by rated current
250 VAC, 50/60 Hz
2 to 20 A @ 40°C max.
DC to 400 Hz
ENEC and CQC: IEC C14 Inlet - 2 to 10 A
ENEC and CQC: IEC C20 Inlet - 16 A
UL: IEC C14 Inlet - 2 to 15A
UL: IEC C20 Inlet - 16 to 20A
P –> PE 2000 VAC for 2 sec (standard types)
P –> N 760 VAC for 2 sec
P –> PE 2500 VAC for 2 sec (B types)
IP 40 according to IEC 60529
-25°C to +85°C (25/85/21)
UL 60939-3, IEC/EN 60939-3
UL 94 V-0
High saturation resistance and excellent thermal
behavior
Rear and Front flange or snap-in mounting options
Optional medical versions (B type) comply with the
requirements of IEC/EN 60601-1 for creepage and
clearance, leakage current and high potential
testing
Optional earth line choke see FN 9255 E versions
All versions according IEC/EN 62368-1
High potential test voltage
Typical applications
Medical devices (MDD)
In-vitro diagnostic medical devices (IVDD)
Computing & accessories
LCD and OLED Displays
Test and measurement equipment
Household and similar products as per IEC/EN55014
Portable electrical and electronic equipment
Small to medium-sized machines
Single-phase power supplies, switch-mode power
supplies (SMPS)
Protection category
Temperature range (operation and storage)
Design corresponding to
Flammability according to
For electrical schematic refer to page 3
2
EMC/EMI Products
Schaffner Group
Datasheets
11 Oct 2018
Filter selection table
Filter
Rated current
@ 40°C
Leakage current*
@ 250 VAC/50 Hz
(@ 120 VAC/60 Hz)
[A]
FN 9255 x-2- ..
FN 9255 x-4-..
FN 9255 x-6-..
FN 9255 x-10-..
FN 9255 x-15-..
FN 9255 x-16-..
FN 9255 x-20-..
FN 9255 xB-2-..
FN 9255 xB-4-..
FN 9255 xB-6-..
FN 9255 xB-10-..
FN 9255 xB-15-..
FN 9255 xB-16-..
FN 9255 xB-20-..
2
4
6
10
15
16
20
2
4
6
10
15
16
20
[mA]
0.45 (0.26)
0.45 (0.26)
0.45 (0.26)
0.45 (0.26)
0.45 (0.26)
0.45 (0.26)
0.45 (0.26)
-
-
-
-
-
-
-
[mH]
4.8
2.1
0.9
0.2
0.13
0.3
0.3
4.8
2.1
0.9
0.2
0.13
0.3
0.3
[µH]
18
18
18
18
8
0.7
0.7
18
18
18
18
8
0.7
0.7
[µF]
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
[nF]
2.2
2.2
2.2
2.2
2.2
2.2
2.2
-
-
-
-
-
-
-
Inductance
L1
L2
Cx
Capacitance
Cy1
Cy2
Resistor
R
Input
Output
connections
**
Weight
connections
[nF]
1
1
1
1
1
1
1
[kΩ]
-
-
-
-
-
-
-
1000
1000
1000
1000
1000
1000
1000
C14
-06
-06
-06
-06
-06
-06
-06
-06
-06
-06
-06
-06
-06
-06
-07
-07
-07
-07
-07
-07
-07
-07
-07
-07
-07
-07
-07
-07
[g]
52
52
52
54
54
130
130
52
52
52
54
54
130
130
C14
C14
C14
C14
C20
C20
C14
C14
C14
C14
C14
C20
C20
Test conditions: 25°C±2°C; Measuring frequency for Inductance: 1 kHz; 50 mV;
Tolerances: Inductance: +50%, -30%; Capacitance: ±25%; Resistor: ±15%; For mechanical tolerances refer to mechanical data section.
**
Maximum leakage under normal operating conditions (acc. to IEC60939-3). Note: if the neutral line is interrupted, worst case leakage could reach twice this level.
** Standard length is 100 mm
Product selector
For example: FN 9255 MB-15-06 - FN 9255 dual stage
IEC inlet with rear mount flanges, medical version,
15A rated current and fast-on terminals
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