High Speed Fuses
North American — FWH 500V: 35-1600A
2.0
1.6
Arc Voltage
FWH
UL
This curve gives the peak
arc voltage, U , which
may appear across the
fuse during its operation
as a function of the
Specifications
Description: North American style
stud-mount fuses.
1.2
103
L
800
Dimensions: See Dimensions
illustration.
600
500
2)
applied working voltage,
Ratings:
E , (rms) at a power factor
1)
g
400
300
Volts: — 500Vac
Amps: — 35-1600A
IR: — 200kA Sym.
— 50kA @ 500Vdc
of 15%.
Eg
500
100
200
300
400
Power Losses
1) 35-200 & 1000-1600A Range
2) 225-800A Range
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.
1.0
0.8
Kp
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.
0.6
0.5
0.4
0.3
Electrical Characteristics
The correction factor, K ,
0.2
p
1.5
Total Clearing I2t
is given as a function of
the RMS load current, Ib,
in % of the rated current.
K
2
1.0
The total clearing I t at rated
Ib
0.1
voltage and at power factor of
15% are given in the electrical
characteristics. For other volt-
30 40 50 60
80 90 100%
70
Catalog Numbers
0.5
0.3
Electrical Characteristics
I2t (A2 Sec)
2
Rated
Current
RMS-Amps
35
1)
2)
ages, the clearing I t is found
Catalog
Numbers
Clearing
at 500V
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
by multiplying by correction
Pre-arc
34
factor, K, given as a function of 0.2
applied working voltage, E ,
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
150
320
450
670
900
900
1400
1600
2000
3500
4600
6200
40
45
50
60
70
80
90
100
125
150
175
200
225
250
275
300
325
350
400
450
500
600
700
800
76
105
135
210
210
305
360
475
Eg
500
g
0.15
100
(rms).
250
400
1) 35-800A Range
2) 1000-1600A Range
Dimensions (in)
Amp
Range
35-60
70-100
125-200
225-400
450-600
700-800
1000-1200
1400-1600
Fig. A
B
C
D
E
F
G
H
J
1
1
1
1
1
1
1
2
3.188 0.813 1.593 2.541 2.193 0.344 0.719 0.125 0.518
3.625 0.947 1.736 2.853 2.807 0.352 0.750 0.125 0.375
3.625 1.156 1.836 2.892 2.768 0.344 1.000 0.188 0.406
4.340 1.500 2.090 3.440 2.750 0.410 1.000 0.250 0.750
4.340 2.000 2.090 3.530 2.780 0.410 1.500 0.250 0.780
6.340 2.500 2.090 4.970 3.440 0.530 2.000 0.380 1.300
6.969 3.000 3.219 5.465 4.475 0.625 2.375 0.438 1.120
See Drawing
800
1100
1450
1900
4600
6300
7900
9800
13700
14500
19200
24700
29200
41300
55000
76200
92000
122000
200000
290000
8500
23300
32200
40300
49800
63800
72900
96700
127000
149000
206000
298000
409000
450000
600000
1000000
1400000
1mm = 0.0394” / 1” = 25.4mm
Fig. 1: 35-1200A
A
D
E
C
H
G
F
B
1000
1200
1400
1600
J
Fig. 2: 1400-1600A
10.219
3.219
• Watts loss provided at rated current. • See accessories on page 106.
0.125
0.5
0.625
1.625
Typical Applications
Features and Benefits
• Excellent dc performance
• Low arc voltage and low
energy let-through (I t)
• Low watts loss
1.750
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
3.5
2
0.75
4.25
• Superior cycling capability
6.219
8.969
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
97
COOPER [ COOPER BUSSMANN, INC. ]
