High performance dual-stage IEC C14 and C20 inlet filter
IEC Inlet Filters FN9255
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 FN9255E)
- Safe voltage discharge version (R-type)
Features and Benefits
Exceptional attenuation performance from 150kHz to 300MHz due to dual-stage design
High saturation resistance and excellent thermal behavior
Rear and Front flange or snap-in mounting options
FN 9255 B versions comply with the requirements of 1MOP acc. to 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
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)
Technical Specifications
Maximum continuous operating voltage
250 VAC, 50/60 Hz
Rated currents
2 to 20 A @ 40°C max
Design corresponding to
UL 60939-3, CSA Std C22.2 No. 8, IEC/EN 60939-3, GB/T 15287, GB/T 15288
Surge pulse protection (Z type)
Helps compliance to IEC61000-4-5 (Differential Mode only)
MTBF @ Rated amb. Temp./Voltage (Mil-HB-217F)
> 1,000,000 hours
Operating frequency
DC to 400 Hz
Flammability according to
UL 94 V-0
Approvals by rated current
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
UL: IEC C14 Inlet – 2 to 15A
UL: IEC C20 Inlet – 16 to 20A
UL: IEC C14 Inlet – 2 to 15A
UL: IEC C20 Inlet – 16 to 20A
High potential test voltage
P –> PE 2000 VAC for 2 sec (standard types)
P –> PE 2500 VAC for 2 sec (B types)
P –> N 760 VAC for 2 sec
Protection category
IP 40 according to IEC 60529
Temperature range (operation and storage)
-25°C to +85°C (25/85/21)
