SCHAFFNER FN 350 Technical data

Single-phase EMC/RFI fi lter
for motor drives

motor drive applications

■ Industrial grade safety terminal blocks

■ Designed to meet EN 55011/14/22

■ Compliant with IEC 60950

1-phase fi lters

FN 350

Approvals■ Compact filter solution for single-phase

Technical specifications

Maximum continuous operating voltage: 1x 250VAC
Operating frequency: dc to 400Hz
Rated currents: 8 to 55A @ 40°C
High potential test voltage: P –> E 2000VAC for 2 sec
P –> N 1100VDC for 2 sec
Protection category: IP20
Overload capability: 4x rated current at switch on,

1.5x rated current for 1 minute, once per hour
Temperature range (operation and storage): -25°C to +100°C (25/100/21)
Flammability corresponding to: UL 94V-2 or better
Design corresponding to: UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939
MTBF @ 40°C/230V (Mil-HB-217F): 420,000 hours

Features and benefits

■ High component values optimized for com-

mon and differential-mode attenuation in

the lower frequency range makes this filter

■ FN 350 also meets IEC 60950 requirements,

thus providing additional application

flexibility.

ideal for a large variety of single-phase

motor drive applications.

■ Supplied in a relatively small housing

design with safety terminal blocks for fast

and easy installation in primarily industrial

environments.

Typical electrical schematic

Typical applications

■ Single-phase motor drives

■ Automation equipment

■ Power supplies, SMPS

■ Office equipment

■ Testing and measurements equipment

> Components > FN 350

Filter selection table

Filter Rated current Leakage current* Power loss Input/Output Weight
@ 40°C (25°C) @ 230VAC/50Hz @ 25°C/50Hz connections

[A] [mA] [W] [kg]

FN 350-8-29 8 (9.0) 4.9 5.2 -29 0.7
FN 350-12-29 12 (13.5) 4.9 5.7 -29 0.7
FN 350-20-29 20 (22.4) 4.9 6.1 -29 0.7
FN 350-30-33 30 (33.6) 5.4 6.1 -33 0.7
FN 350-55-33 55 (61.5) 11.0 9.9 -33 1.2

* Maximum leakage under normal operating conditions. Note: if the neutral line is interrupted, worst case leakage could reach twice this level.

Typical filter attenuation

Per CISPR 17; A = 50Ω/50Ω sym; B = 50Ω/50Ω asym; C = 0.1Ω/100Ω sym; D = 100Ω/0.1Ω sym

8A types 12A types 20 and 30A types 55A types