High Speed Fuses
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp 101
High Speed
Fuses
North American — FWP 700V: 5-1200A
FWP
Specifications
Description: North American
style stud-mount fuses.
Dimensions: See Dimensions
illustrations.
Ratings:
Volts: — 700Vac
Amps: — 5-1200A
IR: — 200kA RMS Sym.
— 50kA @700Vdc
Agency Information: CE, UL Recognition & CSA
Component Acceptance on 5-800A
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 volt-
ages, 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 dur-
ing its operation as a function
of the applied working volt-
age, Eg, (rms) at a power
factor of 15%.
Power Losses
Watts loss at rated current is
given in the electrical charac-
teristics. 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
Electrical Characteristics
Rated I2t (A2Sec)
Catalog Current Clearing Watts
Numbers RMS-Amps Pre-arc at 700V Loss
FWP-5B 5 1.6 10 1.5
FWP-10B 10 3.6 20 4
FWP-15B 15 10 75 5.5
FWP-20B 20 26 180 6
FWP-25B 25 44 340 7
FWP-30B 30 58 450 9
FWP-35B 35 34 160 12
FWP-40B 40 76 320 12
FWP-50B 50 135 600 12
FWP-60B 60 210 950 15.5
FWP-70B 70 305 2000 18
FWP-80B 80 360 2400 21
FWP-90B 90 415 2700 25
FWP-100B 100 540 3500 27
FWP-125A 125 1800 7300 28
FWP-150A 150 2900 11700 32
FWP-175A 175 4200 16700 35
FWP-200A 200 5500 22000 43
FWP-225A 225 7700 31300 45
FWP-250A 250 10500 42500 48
FWP-300A 300 17600 71200 58
FWP-350A 350 23700 95600 65
FWP-400A 400 31000 125000 78
FWP-450A 450 36400 137000 94
FWP-500A 500 45200 170000 107
FWP-600A 600 66700 250000 122
FWP-700A 700 54000 300000 125
FWP-800A 800 78000 450000 140
FWP-900A 900 91500 530000 150
FWP-1000A 1000 120000 600000 170
FWP-1200A 1200 195000 1100000 190
• Watts loss provided at rated current.
• See accessories on page 106.
Features and Benefits
• Excellent dc performance
• Low arc voltage and low
energy let-through (I2t)
• Superior cycling capability
700604460316
1.5
1.0
0.5
0.3
0.2
0.15 Eg
K
1)
3)
2)
UL
2
1.6
1.4
1.2
103
8
6
5
4
3
400300 500 600 700
Eg
1)
2)
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
1) 125-600A Range
2) 35-100 & 700-1200A Range
1) 35-100A Range
2) 125-600A Range
3) 700-1200A Range
AEDC
F
J
G
B
H
Fig. 1: 5-800A
Dimensions (in)
Amp
Range Fig. ABCDEF GH I
5-30 1 2.870 0.563 1.855 2.4772.477 0.250 0.4050.063 0.250
35-60 1 4.375 0.813 2.750 3.7083.312 0.344 0.7250.125 0.542
70-100 1 4.406 0.947 2.594 3.6253.563 0.344 0.7500.125 0.375
125-200 1 5.090 1.500 2.840 4.1903.500 0.410 1.0000.250 0.750
225-400 1 5.090 2.000 2.840 4.2803.530 0.410 1.5000.250 0.780
450-600 1 7.090 2.500 2.840 5.7204.190 0.530 2.0000.380 1.300
700-800 1 6.630 2.000 2.844 5.5625.062 0.625 1.5000.250 0.875
900-1000 2 See Drawing
1200 3 See Drawing
1mm = 0.0394” / 1” = 25.4mm
7.594
0.5
3.500
3.844
1.031
0.625
2.750
5.966
5.154
1.375
Fig. 2: 900-1000A Fig. 3: 1200A
10.844
3.844
0.625
4.250
0.750
3.500
6.840
0.125
0.500
1.625
1.750
9.590
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
102
High Speed Fuses
North American — FWP 700V: 5-1200A
2468
10222468 2
1032468
104
2
4
6
2
6
4
2
6
4
101
100
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
103
104
FWP-35B
FWP-80B
FWP-90B
FWP-100B
FWP-60B
FWP-70B
FWP-40B
FWP-50B
FWP-900A
FWP-1200A
FWP-1000A
FWP-800A
FWP-700A
Prospective Current In Amperes RMS
Virtual Pre-Arcing Time In Seconds
FWP 35-100A(B) & 700-1200A(A): 700V
Time-Current Curve
Prospective Short-Circuit Current
Peak Let-Through Current
2
6
4
2
6
4
2
6
4
246 246 246
102
103
104
106
102103104105
2
FWP-700A
FWP-800A
FWP-1000A
FWP-100B
FWP-35B
FWP-70B
FWP-40B
FWP-50B
FWP-60B
FWP-1200A
Peak Let-Through Curve
2468
10122468 2
1022468
103
2
4
6
2
6
4
2
6
4
2
6
4
2
6
4
2
6
4
6
4
2
6
2
4
10–1
10–2
10–3
10–4
102
101
100
103
104
Prospective Current In Amperes RMS
Virtual Pre-Arcing Time In Seconds
FWP-10B
FWP-15B
FWP-20B
FWP-5B
FWP-30B
FWP-25B
FWP 5-30A(B): 700V
Time-Current Curve
Prospective Short-Circuit Current
Peak Let-Through Current
2
4
2
6
6
4
2
6
4
246246246246
101
102
103
104
101102103104105
FWP- 5B
FWP-10B
FWP-15B
FWP-20B
FWP-25B
FWP-30B
2
Peak Let-Through Curve
Data Sheet: 35785308Data Sheet: 35785316
High Speed Fuses
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp 103
High Speed
Fuses
North American — FWP 700V: 5-1200A
10–4
10–3
10–2
10–1
100
101
102
103
FWP-150A
FWP-200A
FWP-300A
FWP-400A
FWP-600A
Prospective Current In Amperes RMS
Virtual Pre-Arcing Time In Seconds
102103104105
FWP 125-600A: 700V
Time-Current Curve
FWP-600A
FWP-400A
FWP-300A
FWP-200A
FWP-150A
102103104105
102
103
104
105
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
A
B
Peak Let-Through Curve
Data Sheet: 361
Cooper Bussmann Named First in
Fuses by Readers of Plant
Services Magazine
Cooper Bussmann has been named as the vendor
of fering the highest value in electrical fuses in a
recent fill-in-the-blank sur vey of nearly 40,000
qualified readers of Plant Ser vices Magazine. A full
70 percent of sur vey respondents said Cooper
Bussmann was their number one choice. The
nearest competitor weighed in at only 7 percent. The
63 percent spread was the widest of all 63 product
categories, ranging from aerial work pla tfor ms to
welding equipment. According to Plant Services
editors, the products c hosen are those “that deliver
the combination of functionality, durability and low
maintenance that add up to the lowest estimated
life-cycle cost”—those offering the very best value in
their product category.
Did You Know?
