Compact Line 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
Features and Benefits
Typical Applications
Mainly industrial equipment, machinery, machine tools and diverse process auto- mation systems with three-phase and neutral electricity supply. Further, these filters are suitable for power supplies, high-power office equipment and further applications, where efficient interference suppression on three phases and the neutral line is required and where space is critical. Because of the very low leakage current, FN 3256 can even be used for some medical devices.
Technical Specifications
Maximum continuous operating voltage
3x520/300 VAC
Nominal operating voltage
480 VAC +10% possible
Rated currents
8 to 160 A @ 50°C
Overload capability
4x rated current at switch on,
1.5x rated current for 1 minute, once per hour
Operating frequency
DC to 60 Hz
High potential test voltage
P/N –> E 2750 VDC for 2 sec
P –> P 2250 VDC for 2 sec
P -> N 1300 VDC for 2 sec
Temperature range (operation and storage)
-25°C to +100°C (25/100/21)
Protection category
IP 20
Flammability corresponding to
UL 94 V-0
Design corresponding to
UL 1283, CSA 22.2 No. 8 1986, IEC/EN 60939
MTBF (Mil-HB-217F)
>410,000 h @ 50°C/480 V
Typical electrical schematic
Approvals & Compliances
