For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
202
Ferrule — FWP 690V/700V (IEC/UL): 1-50A,
striker optional
High Speed Fuses
Dimensions - mm (inches)
51 (2.00")
59 (2.323")
13 (0.511")
14.3
(0.563")
5 (0.197")
FWP (14 x 51mm)
Specifications
Description: Ferrule style high
speed fuses with and without
indicating striker.
Dimensions: See Dimensions
illustrations.
Ratings:
Volts: — 690Vac (IEC)
— 700Vac (UL)
Amps: — 1-50A
IR: — 200kA RMS Sym.
— 50kA @700Vdc
Agency Information: CE, UL Recognition, CSA
Component Acceptance for versions without indicator only.
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at
rated voltage and at power
factor of 15% are given
in the electrical
characteristics. For other
voltages, the clearing I2t is
found by multiplying by
correction factor, K, given
as a function of applied
working voltage, Eg, (rms).
Arc Voltage
This curve gives the peak
arc voltage, UL, which may
appear across the fuse
during its operation as a
function of the applied
working voltage, Eg, (rms)
at a power factor of 15%.
Power Losses
Watts loss at rated current
is given in the electrical
characteristics. The curve
allows the calculation of
the power losses at load
currents lower than the
rated current. The
correction factor, Kp, is
given as a function of the
RMS load current, Ib, in %
of the rated current.
Catalog Numbers
Rated I2t (A2Sec)
Catalog Current Minimum Clearing At Watts
Numbers Size RMS-Amps Melting Rated Voltage Loss
Without Striker
FWP-1A14Fa 1 — — —
FWP-2A14Fa 2 — — —
FWP-2.5A14Fa 2.5 — — —
FWP-3A14Fa 3 — — —
FWP-4A14Fa 4 — — —
FWP-5A14Fa 14 x 51mm 5 1.6 11.0 1.5
FWP-10A14Fa (9⁄16" x 2") 10 3.6 38.5 4
FWP-15A14Fa 15 8.6 70 5.5
FWP-20A14Fa 20 26.0 230 6
FWP-25A14Fa 25 46.5 375 7
FWP-30A14Fa 30 58 485 9
FWP-32A14Fa 32 68 600 7.6
FWP-40A14Fa 40 84 750 8
FWP-50A14Fa 50 200 1800 9
With Striker
FWP-10A14FI 10 3.6 38.5 4
FWP-15A14FI 15 8.6 70 5.5
FWP-20A14FI 14 x 51mm 20 26.0 230 6
FWP-25A14FI (9⁄16” x 2”) 25 46.5 375 7
FWP-30A14FI 30 58 485 9
FWP-32A14FI 32 68 600 7.6
FWP-40A14FI 40 84 750 8
FWP-50A14FI 50 200 1800 9
Features and Benefits
• Excellent cycling capability and dc performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss in a compact size
• Used with finger-safe holders/blocks
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
UL
1.4
1.2
103
6
8
7
9
5
4
3
200 300 400 500 600 700
Eg
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
30 40 50 60 70 80 90 100%
Ib
Data Sheets: E5781724 rev. B (without striker)
170K5342/43 (with striker)
K
1.4
1.2
1.0
0.6
0.8
0.7
0.9
0.5
0.4
0.3
200 300 400 500 600 700
Eg
1)
2)
1) 5-30A Range
2) 32-50A Range
50.8
(2.000")
15.5
(0.610")
14.3
(0.563")
With Striker
Without Striker
FWP with
striker option.
Electrical Characteristics
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp 203
Ferrule — FWP 690V/700V (IEC/UL): 1-50A,
striker optional
High Speed Fuses
High Speed
Fuses
FWP 5-50A: 660V/700V (14x 51mm)
Time-Current Curve
Data Sheet: 35785307
103
102
10–1
10–2
10–3
10–4
FWP-10A14F
FWP-15A14F
FWP-20A14F
FWP-5A14F
FWP-50A14F
FWP-30A14F
FWP-32A14F
FWP-40A14F
FWP-25A14F
2468
10122468 2
1022468
103
2
4
6
2
6
4
100
2
6
4
101
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
Prospective Current In Amperes RMS
Virtual Pre-Arcing Time In Seconds
104
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
2
4
2
6
6
4
2
6
4
246 246 246 246
101
102
103
104
101102103104105
FWP-5A14F
FWP-10A14F
FWP-15A14F
FWP-20A14F
FWP-25A14F
FWP-30A14F
FWP-32A14F
FWP-40A14F
FWP-50A14F
2
Peak Let-Through Curve
