High Speed Fuses
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 I t
2
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
1)
0.3
0.2
2)
E
g
250
400
500
1) 35-800A Range
2) 1000-1600A Range
2.0
1.6
1.2
10
3
U
L
800
600
2)
500
400
300
100
1)
E
g
200
300
400
500
1) 35-200 & 1000-1600A Range
2) 225-800A Range
1.0
K
p
0.8
0.6
0.5
0.4
0.3
0.2
High Speed
Fuses
1.5
K
1.0
The total clearing I t at rated
voltage and at power factor of
15% are given in the electrical
characteristics. For other volt-
ages, the clearing I
2
t is found
by multiplying by correction
factor, K, given as a function of
applied working voltage, Eg,
(rms).
2
0.1
30 40 50
60
70
I
b
80 90 100%
0.5
0.15
100
Dimensions (in)
Amp
Range
35-60
70-100
125-200
225-400
450-600
700-800
1000-1200
1400-1600
Fig.
1
1
1
1
1
1
1
2
A
B
3.188 0.813
3.625 0.947
3.625 1.156
4.340 1.500
4.340 2.000
6.340 2.500
6.969 3.000
See Drawing
C
1.593
1.736
1.836
2.090
2.090
2.090
3.219
D
2.541
2.853
2.892
3.440
3.530
4.970
5.465
E
2.193
2.807
2.768
2.750
2.780
3.440
4.475
F
0.344
0.352
0.344
0.410
0.410
0.530
0.625
G
0.719
0.750
1.000
1.000
1.500
2.000
2.375
H
0.125
0.125
0.188
0.250
0.250
0.380
0.438
J
0.518
0.375
0.406
0.750
0.780
1.300
1.120
1mm = 0.0394” / 1” = 25.4mm
Fig. 1: 35-1200A
A
D
E
C
H
G F
J
B
Fig. 2: 1400-1600A
0.125
0.5
10.219
3.219
0.625
1.625
1.750
Catalog
Numbers
FWH-35B
FWH-40B
FWH-45B
FWH-50B
FWH-60B
FWH-70B
FWH-80B
FWH-90B
FWH-100B
FWH-125B
FWH-150B
FWH-175B
FWH-200B
FWH-225A
FWH-250A
FWH-275A
FWH-300A
FWH-325A
FWH-350A
FWH-400A
FWH-450A
FWH-500A
FWH-600A
FWH-700A
FWH-800A
FWH-1000A
FWH-1200A
FWH-1400A
FWH-1600A
Rated
Current
RMS-Amps
35
40
45
50
60
70
80
90
100
125
150
175
200
225
250
275
300
325
350
400
450
500
600
700
800
1000
1200
1400
1600
Electrical Characteristics
I
2
t (A
2
Sec)
Clearing
Pre-arc
at 500V
34
150
76
320
105
450
135
670
210
900
210
900
305
1400
360
1600
475
2000
800
3500
1100
4600
1450
6200
1900
8500
4600
23300
6300
32200
7900
40300
9800
49800
13700
63800
14500
72900
19200
96700
24700
127000
29200
149000
41300
206000
55000
298000
76200
409000
92000
450000
122000
600000
200000
1000000
290000
1400000
Watts
Loss
8
7.5
7.5
7.5
9.9
10.6
12.7
15
17
25
30
35
40
39
41
46
51
53
58
65
74
84
108
120
129
145
180
210
230
• Watts loss provided at rated current.
• See accessories on page 106.
3.5
6.219
8.969
0.75
4.25
Features and Benefits
• Excellent dc performance
• Low arc voltage and low
energy let-through (I
2
t)
• Low watts loss
• Superior cycling capability
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
97
High Speed Fuses
North American — FWH 500V: 35-1600A
FWH 35-200A(B) & 900-1600A(A): 500V
Time-Current Curve
10
4
6
4
2
10
3
FWH 225-800A: 500V
Time-Current Curve
10
3
6
4
2
10
2
10
2
FWH-350A
FWH-400A
FWH-500A
FWH-600A
FWH-800A
10
1
FWH-900A
FWH-1000A
FWH-1200A
FWH-1400A
FWH-1600A
6
4
2
10
1
6
4
2
10
0
Virtual Pre-Arcing Time In Seconds
10
0
6
4
2
10
–1
6
4
2
10
–2
6
4
2
10
–3
FWH-35B
FWH-40B
FWH-45B
FWH-50B
FWH-60B
FWH-70B
FWH-80B
FWH-90B
FWH-100B
FWH-125B
FWH-150B
FWH-175B
FWH-200B
10
–1
10
–2
6
4
2
10
–4
2
4
6
8
10
2
2
10
3
Prospective Current In Amper es RMS
2
4
6
8
4
6
8
10
4
10
–3
10
–4
10
2
10
3
10
4
Prospective Current In Amperes RMS
10
5
Peak Let-Through Curve
10
5
FWH-1600A
6
4
FWH-1400A
FWH-1200A
FWH-1000A
Peak Let-Through Curve
10
5
B
2
10
4
10
4
6
Peak Let-Through Current
Peak Let-Through Current
4
2
FWH-800A
FWH-600A
FWH-500A
FWH-400A
FWH-300A
FWH-250A
10
3
FWH-200B
6
4
FWH-150B
FWH-125B
FWH-100B
FWH-80B
FWH-60B
2
FWH-50B
FWH-40B
FWH-35B
10
2
10
3
A
10
2
2
4
6
10
3
2
4
6
10
4
2
4
6
10
5
2
10
2
10
2
10
3
10
4
Prospective Short-Circuit Current Symmetrical RMS
10
5
Prospective Short-Circuit Current Symmetrical RMS
Data Sheet: 35785304
Data Sheet: 360
98
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
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