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Three-Phase + Neutral Line Filters

Three-Phase + Neutral Line Filters
Three-phase and neutral line EMC/EMI filters are a compact solution for the interference suppression on the mains input of cabinets and control units of equipment, ranging from industrial applications like machine tools to sensitive medical installations. These typically involve separate and often insufficiently filtered frequency inverters and SMPS, causing current imbalance and significant interference problems. As individual elements they may be interference-suppressed already. The conjunction of several switching components in the same cabinet and a non-EMCconscious cabling will rise the demand for an additional EMC/EMI filter on the mains input of the whole installation. Many times this is the only way to get the CE mark for the cabinet in accordance with the EMC directive.

 
 

FN 256 Compact general purpose three-phase and neutral line EMC/EMI filter

Three-phase and neutral line filter for general purpose four-wire filtering
Compact space-saving design
Choice of connection style
Low operating leakage current 

Attenuation performance: high
Frequency: dc to 60 Hz
Leakage current: 3.4 to 6.8 mA
Voltage: ≤ 480 V

 
 
 

FN 354 Compact three-phase and neutral line EMC/EMI filter for high frequency attenuation

Compact four-wire filter for applications with limited space
High attenuation performance up to 300MHz
Equally suitable for star and delta power networks

Attenuation performance: high
Frequency: dc to 60 Hz
Leakage current: 0.175 to 0.5 mA
Rated Current: 4 to 25 A
Voltage: ≤ 440 V

             
 
 

FN 355 Ultra-compact three-phase and neutral line EMC/EMI filter with very low leakage current

Ultra-compact four-wire filter for applications lacking space
Exceptional low operating leakage current
Equally suitable for star and delta power networks

Attenuation performance: standard
Frequency: dc to 400 Hz
Leakage current: 0.07 to 0.29 mA
Rated Current: 3 to 20 A
Voltage: ≤ 440 V

 
 
 

FN 356 General purpose three-phase and neutral line EMC/EMI filter

Three-phase and neutral line filter for general four-wire filtering tasks
Choice of connection style
Low operating leakage current
Compliant with IEC 60950
Suitable to meet EN 55011/14/22

Attenuation performance: high
Frequency: dc to 60 Hz
Leakage current: 0.43 to 8 mA
Rated Current: 16 to 150 A
Voltage: ≤ 440 V

             
 
 

FN 3256 Compact three-phase and neutral line EMC/EMI filter for industrial machinery/equipment

Compact, space-saving design, optimized for industrial machinery
Combines high attenuation performance with low leakage current
Performance according to the machine tool standard EN 50370-1
Increases also the immunity if operated directly on the mains input

Attenuation performance: high
Frequency: dc to 60 Hz
Leakage current: < 1 mA
Rated Current: 8 to 160 A
Voltage: ≤ 520 V

 
 
 

FN 3280 High-end three-phase and neutral line EMC/EMI filter for industrial machinery/equipment

Compact, space-saving design, optimized for industrial machinery
Combines exceptional attenuation with low leakage current
Suitable for machines in mixed/domestic environments (Class A/B)
Increases also the immunity if operated directly on the mains input

Attenuation performance: very high
Frequency: dc to 60 Hz
Leakage current: < 1 mA
Rated Current: 8 to 600 A
Voltage: ≤ 520 V

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