High Speed Fuses
Ferrule Fuses
Table of Contents
Basic Catalog
Number
FWA
FWX
FWH
FWC
FWP
FWK
FWJ
FWL/FWS
Volts
150
250
500
600
690V/700
750
1000
1250/1500/2000
Amp
Range
5-60
1-50
0.25-30
6-32
1-100
5-60
20-30
2-30
General Information
Page
224-225
226-227
228-231
232-233
234-237
238-239
240-241
242
Accessories
Fuse Holders
Bussmann offers a full line of ferrule style (cylindrical
clip-mounted) fuses, designed and tested to meet standards
and requirements in various locations around the world.
Their unique design and construction provide:
• Superior cycling capability
• Low energy let-through (I2t)
Ferrule fuses provide an excellent solution for small UPS,
small ac drives and other low power applications where
space is at a premium.
241
Voltage Rating
Ferrule Fuse Ranges
Amps
5-60
1-50
0.25-30
6-32
20-100
1-50
5-60
20-30
20-30
8-15
2-6
AC
X
X
X
X
X
X
X
X
X
X
X
DC
X
X
X
X
—
X
X
X (800Vdc)
X (1000Vdc)
X (1000Vdc)
X (1000Vdc)
All Bussmann ferrule fuses — except 690V — have been
tested at their rated voltage. The 690V ferrule fuse has been
tested to the IEC 60269 standard, which requires clearing at
the rated voltage +5%.
Accessories
Ferrule fuses may be mounted in fuseclips, fuse holders,
fuse blocks or fused switches. A variety of products are
available. Please consult Bussmann Application Engineering
to discuss your requirement.
For product data sheets, visit www.cooperbussmann.com/DatasheetsEle
223
High Speed
Fuses
Volts
150
250
500
600
700 (22 x 58mm)
700 (14 x 51mm)
750
1000
1250
1500
2000
High Speed Fuses
Ferrule — FWP 690V/700V (IEC/UL): 1-50A,
Striker Optional
FWP (14 x 51mm)
Arc Voltage
Specifications
Description: Ferrule style high
speed fuses with and without
indicating striker.
Dimensions: See dimensions
illustrations.
Ratings:
Volts: — 690Vac (IEC)
— 700Vac (UL)
FWP with
— 800Vdc (5-50A)
striker option.
Amps: — 1-50A
IR: — 200kA RMS Sym.
— 50kA @800Vdc
Agency Information: CE, UL Recognition JFHR2.E91958,
CSA Component Acceptance file Class 1422-30, 1422-90
(53787) for versions without indicator only. Designed and
tested to IEC 60269: Part 4.
Electrical
Characteristics
Total Clearing I2t
1.4
1.2
1.0
0.9
0.8
0.7
0.6
This curve gives the peak
arc voltage, UL, which
may appear across the
fuse during its operation
as a function of theapplied
working voltage, Eg, (rms)
at a power factor of 15%.
1.4
1.2
103
9
8
7
6
Power Losses
4
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.
3
UL
5
Eg
200
300
400
500
Catalog Numbers
K
Eg
300
400
500
600
700
1) 5-30A Range
2) 32-50A Range
Dimensions - mm (in)
Without Striker
50.8
(2.000")
14.3
(0.563")
15.5
(0.610")
Catalog
Numbers
Without Striker
FWP-1A14F
FWP-2A14F
FWP-2.5A14F
FWP-3A14F
FWP-4A14F
FWP-5A14F
FWP-10A14F
FWP-15A14F
FWP-20A14F
FWP-25A14F
FWP-30A14F
FWP-32A14F
FWP-40A14F
FWP-50A14F
With Striker*
FWP-10A14FI
FWP-15A14FI
FWP-20A14FI
FWP-25A14FI
FWP-30A14FI
FWP-32A14FI
FWP-40A14FI
FWP-50A14FI
Size
0.4
0.3
0.2
Ib
30 40 50 60 70 80 90 100%
Electrical Characteristics
Rated
I2t (A2 Sec)
Current
Minimum
Clearing At
Watts
RMS-Amps
Melting
Rated Voltage Loss
14 x 51mm
(9⁄16" x 2")
14 x 51mm
(9⁄16” x 2”)
1
2
2.5
3
4
5
10
15
20
25
30
32
40
50
—
—
—
—
—
1.6
3.6
8.6
26.0
46.5
58
68
84
200
—
—
—
—
—
11.0
38.5
70
230
375
485
600
750
1800
—
—
—
—
—
1.5
4
5.5
6
7
9
7.6
8
9
10
15
20
25
30
32
40
50
3.6
8.6
26.0
46.5
58
68
84
200
38.5
70
230
375
485
600
750
1800
4
5.5
6
7
9
7.6
8
9
*Striker range is 600Vdc only
• Watts loss provided at rated current.
• See accessories on page 243.
With Striker
59 (2.323")
51 (2.00")
14.3
(0.563")
5 (0.197")
13 (0.511")
•
•
•
•
700
0.6
0.5
0.1
The total clearing I2t at
rated voltage and at power
factor of 15% are given in
0.5
the electrical
1)
characteristics. For other 0.4
2)
voltages, the clearing I2t is
0.3
found by multiplying by
200
correction factor, K, given
as a function of applied working
voltage, Eg, (rms).
234
600
1.0
Kp
0.8
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
Data Sheet: 720025
For product data sheets, visit www.cooperbussmann.com/DatasheetsEle
High Speed Fuses
Ferrule — FWP 690V/700V (IEC/UL): 1-50A,
Striker Optional
Without Striker
FWP 5-50A: 660V/700V (14 x 51mm)
Time-Current Curve
104
6
4
2
103
6
4
2
FWP-25A14F
FWP-30A14F
FWP-32A14F
FWP-40A14F
FWP-50A14F
102
Virtual Pre-Arcing Time In Seconds
6
4
2
101
6
4
2
100
6
4
FWP-5A14F
FWP-10A14F
FWP-15A14F
FWP-20A14F
2
10–1
6
4
2
10–2
6
4
2
10–3
6
4
2
10–4
2
4
6
8
2
101
4
6
8
2
102
4
6
8
103
6
105
High Speed
Fuses
Prospective Current In Amps RMS
Peak Let-Through Curve
104
FWP-50A14F
FWP-40A14F
FWP-32A14F
FWP-30A14F
FWP-25A14F
6
4
Peak Let-Through Current
2
103
6
4
2
FWP-20A14F
FWP-15A14F
FWP-10A14F
FWP-5A14F
102
6
4
2
101
101
2
4
6
102
2
4
6
103
2
4
6
104
2
4
2
Prospective Short-Circuit Current Symmetrical RMS
Data Sheet: 35785307
For product data sheets, visit www.cooperbussmann.com/DatasheetsEle
235