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3-phase + neutral line lters
FN 3280
High-end three-phase and neutral line
lter for industrial machinery/equipment
Approvals
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Compact, space-saving design, optimized
for industrial machinery
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Combines exceptional attenuation with
low leakage current
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Suitable for machines in mixed/domestic
environments (Class A/B)
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Increases also the immunity if operated
directly on the mains input
Typical applications
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A compact and light weight filter design
with a cubic“ shape, requiring mini-
mum mounting space and thus taking the
constructional conditions on the mains
input of machinery into account.
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Simple and time-saving installation with
good accessibility for automatic and hand
tools.
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Solid, touch-safe terminal blocks offering
sufficient contacting cross section
according to the EN 60204-1 installation
standard, which is very common in indus-
trial applications.
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As a mains input filter for three phases
and neutral line, FN 3280 provides enough
performance to ensure EMC compliance
of machinery in mixed (Class A) or even
domestic (Class B) environments. Further,
its use will also increase the immunity of
the entire installation siginificantly.
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FN 3280 provides the attenuation perform-
ance needed to meet the requirements of
various machine tools with up to 12
driving axes and ~10 to 20m of motor
cable each.
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For easy selection and application, the
filter current ratings are aligned with
common fuse values.
Mainly industrial equipment, machinery,
machine tools and diverse process auto-
mation systems with three-phase and neutral
electricity supply. Due to the outstanding
attenuation performance, FN 3280 is also the
first choice for noisy power supplies, high-
power office equipment and further three-
phase and neutral devices. Because of the
relatively low leakage current, FN 3280 may
even be used for some medical devices.
Features and benefits
Technical specifications
Maximum continuous operating voltage:
3x 520/300VAC (480VAC + 10% possible)
Operating frequency:
dc to 60Hz
Rated currents:
8 to 200A @ 50°C
High potential test voltage:
P –> E 2750VDC for 2 sec
P –> P 2250VDC 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 @ 50°C/400V (Mil-HB-217F):
>360,000 hours
Typical electrical schematic