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FWH-325A Datasheet(PDF) 11 Page - Cooper Bussmann, Inc.

Part # FWH-325A
Description  High Speed Fuses
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Manufacturer  COOPER [Cooper Bussmann, Inc.]
Direct Link  http://www.cooperbussmann.com
Logo COOPER - Cooper Bussmann, Inc.

FWH-325A Datasheet(HTML) 11 Page - Cooper Bussmann, Inc.

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High Speed Fuses
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
97
North American — FWH 500V: 35-1600A
FWH
Specifications
Description:
North American style
stud-mount fuses.
Dimensions:
See Dimensions
illustration.
Ratings:
Volts: — 500Vac
Amps: — 35-1600A
IR: — 200kA Sym.
— 50kA @ 500Vdc
Agency Information:
CE, UL Recognition & CSA
Component Acceptance on 35-800A only (50kA
IR@500Vdc). UL Recognition on 35-1200A only, CSA
Component Acceptance: 35-1600A.
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 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 cur-
rent is given in the elec-
trical characteristics. The
curve allows the calcula-
tion 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
I
2t (A2 Sec)
Catalog
Current
Clearing
Watts
Numbers
RMS-Amps
Pre-arc
at 500V
Loss
FWH-35B
35
34
150
8
FWH-40B
40
76
320
7.5
FWH-45B
45
105
450
7.5
FWH-50B
50
135
670
7.5
FWH-60B
60
210
900
9.9
FWH-70B
70
210
900
10.6
FWH-80B
80
305
1400
12.7
FWH-90B
90
360
1600
15
FWH-100B
100
475
2000
17
FWH-125B
125
800
3500
25
FWH-150B
150
1100
4600
30
FWH-175B
175
1450
6200
35
FWH-200B
200
1900
8500
40
FWH-225A
225
4600
23300
39
FWH-250A
250
6300
32200
41
FWH-275A
275
7900
40300
46
FWH-300A
300
9800
49800
51
FWH-325A
325
13700
63800
53
FWH-350A
350
14500
72900
58
FWH-400A
400
19200
96700
65
FWH-450A
450
24700
127000
74
FWH-500A
500
29200
149000
84
FWH-600A
600
41300
206000
108
FWH-700A
700
55000
298000
120
FWH-800A
800
76200
409000
129
FWH-1000A
1000
92000
450000
145
FWH-1200A
1200
122000
600000
180
FWH-1400A
1400
200000
1000000
210
FWH-1600A
1600
290000
1400000
230
• 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)
• Low watts loss
• Superior cycling capability
500
400
250
100
1.5
1.0
0.5
0.3
0.2
0.15
Eg
K
1)
2)
UL
2.0
1.6
1.2
103
800
600
500
400
300
100
400
300
200
500
Eg
2)
1)
1) 35-200 & 1000-1600A Range
2) 225-800A Range
A
E
D
C
F
J
G
B
H
10.219
3.219
0.625
4.25
0.75
3.5
6.219
0.125
0.5
1.625
1.750
8.969
Fig. 1: 35-1200A
Fig. 2: 1400-1600A
Dimensions (in)
Amp
Range
Fig. A
B
C
D
E
F
G
H
J
35-60
1
3.188 0.813 1.593 2.541 2.193 0.344 0.719 0.125 0.518
70-100
1
3.625 0.947 1.736 2.853 2.807 0.352 0.750 0.125 0.375
125-200
1
3.625 1.156 1.836 2.892 2.768 0.344 1.000 0.188 0.406
225-400
1
4.340 1.500 2.090 3.440 2.750 0.410 1.000 0.250 0.750
450-600
1
4.340 2.000 2.090 3.530 2.780 0.410 1.500 0.250 0.780
700-800
1
6.340 2.500 2.090 4.970 3.440 0.530 2.000 0.380 1.300
1000-1200
1
6.969 3.000 3.219 5.465 4.475 0.625 2.375 0.438 1.120
1400-1600
2
See Drawing
1mm = 0.0394” / 1” = 25.4mm
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%
I
b
1) 35-800A Range
2) 1000-1600A Range
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters


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