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):
20-100A, Striker Optional
FWP (22 x 58mm)
Arc Voltage
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%.
Specifications
Description: Ferrule style high
speed fuses with and without
indicating striker.
Dimensions: See dimensions
illustration.
Ratings:
Volts: — 690Vac (IEC)
— 700Vac (UL)
FWP with
— 500Vac
striker
option.
— 500Vdc (20-100A)
Amps: — 20-100A
IR: — 200kA RMS Sym.
— 50kA @ 500Vdc
Agency Information: CE, UL Recognition JFHR2.E91958,
CSA Component Acceptance file Class 1422-30, 1422-90
(53787)
The total clearing I t 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).
2
1.4
1.2
1.0
0.9
0.8
0.7
0.6
5
4
Eg
200
300
400
500
0.4
Eg
300
400
500
Dimensions - mm (in)
Without Striker
58.0
(2.283")
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.
1.0
Kp
0.8
0.6
0.5
0.4
0.3
0.2
Ib
0.1
30 40 50
60
70
80 90 100%
22.2
(0.875")
600
700
Catalog
Numbers
Without Striker
FWP-20A22F
FWP-25A22F
FWP-32A22F
FWP-40A22F
FWP-50A22F
FWP-63A22F
FWP-80A22F
FWP-100A22F
With Striker
FWP-20A22FI
FWP-25A22FI
FWP-32A22FI
FWP-40A22FI
FWP-50A22FI
FWP-63A22FI
FWP-80A22FI
FWP-100A22FI
Size
22 x 58mm
(7⁄8" x 29⁄32")
22 x 58mm
(7⁄8" x 29⁄32")
Electrical Characteristics
I2t (A2 Sec)
Minimum
Clearing At
Melting
Rated Voltage
Watts
Loss
20
25
32
40
50
63
80
100*
19.0
34.0
53.5
68
135
280
600
1100
260
410
605
750
1600
3080
6600
12500
5
6
8
9
9.5
11
13.5
16
20
25
32
40
50
63
80
100*
19.0
34.0
53.5
68
135
280
600
1100
260
410
605
750
1600
3080
6600
12500
5
6
8
9
9.5
11
13.5
16
Rated
Current
RMS-Amps
*IEC/UL Voltage rating 690/700
15.0
(0.591")
With Striker
66 (2.598")
58 (2.283")
•
•
•
•
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
16 (0.630"
22.2 (0.874")
Data Sheet: 720026
236
700
Catalog Numbers
0.5
5
(0.197")
600
Power Losses
K
0.3
200
UL
3
Electrical
Characteristics
Total Clearing I2t
1.4
1.2
103
9
8
7
6
For product data sheets, visit www.cooperbussmann.com/DatasheetsEle
High Speed Fuses
Ferrule — FWP 690V/700V (IEC/UL): 20-100A,
Striker Optional
Without Striker
FWP 20-100A: 660V/700V (22 x 58mm)
Time-Current Curve
104
6
4
2
103
6
4
2
FWP-50A22F
FWP-63A22F
FWP-80A22F
FWP-100A22F
102
6
4
Virtual Pre-Arcing Time In Seconds
2
101
6
4
2
10
0
6
4
FWP-20A22F
FWP-25A22F
FWP-32A22F
FWP-40A22F
2
10–1
6
4
2
10–2
6
4
2
10–3
6
4
2
2
101
4
6
8
2
102
4
6
8
High Speed
Fuses
10–4
103
Prospective Current In Amps RMS
Peak Let-Through Curve
104
FWP-100A22F
FWP-80A22F
6
FWP-63A22F
Peak Let-Through Current
4
FWP-50A22F
2
103
6
FWP-40A22F
FWP-32A22F
4
FWP-25A22F
FWP-20A22F
2
102
102
2
4
6
103
2
4
6
104
2
4
6
105
2
Prospective Short-Circuit Current Symmetrical RMS
Data Sheet: 35785291
For product data sheets, visit www.cooperbussmann.com/DatasheetsEle
237