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FWH-250A Datasheet(PDF) 2 Page - Cooper Bussmann, Inc.

Part # FWH-250A
Description  Electrical Characteristics
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Manufacturer  COOPER [Cooper Bussmann, Inc.]
Direct Link  http://www.cooperbussmann.com
Logo COOPER - Cooper Bussmann, Inc.

FWH-250A Datasheet(HTML) 2 Page - Cooper Bussmann, Inc.

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Bussmann®
The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other copies of this document are by definition uncontrolled.
This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right,
without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without
notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
Form No. FWH 500
Page 2 of 2
BIF Doc #720007
®
FWH 500V
35-1600A
Order #
Fig.
A
B
C
D
E
F
G
H
J
FWH-35B-60B
1
3.188
0.813
1.593
2.541
2.193
0.344
0.719
0.125
0.518
FWH-70B-100B
1
3.625
0.947
1.736
2.853
2.807
0.352
0.750
0.125
0.375
FWH-125B-200B
1
3.625
1.156
1.836
2.892
2.768
0.344
1.000
0.188
0.406
FWH-225A-400A
1
4.340
1.500
2.090
3.440
2.750
0.410
1.000
0.250
0.750
FWH-450A-600A
1
4.340
2.000
2.090
3.530
2.780
0.410
1.500
0.250
0.780
FWH-700A-800A
1
6.340
2.500
2.090
4.970
3.440
0.530
2.000
0.380
1.300
FWH-1000A-1200A
1
6.969
3.000
3.219
5.465
4.475
0.625
2.375
0.438
1.120
FWH-1400A-1600A
2
See Drawing
Dimensions
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
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)
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
Fig. 1: 35-1200 Amp Range
Fig. 2: 1400-1600 Amp Range
Dimension in inches.
1mm = 0.0394∑
1∑ = 25.4mm
1) 35-800 Amp Range
2) 1000-1600 Amp Range
1) 35-200 & 1000-1600 Amp Range
2) 225-800 Amp Range
Total Clearing I2t
The total clearing I
2t at rated voltage and
at power factor of 15% are given in the
electrical characteristics. For other volt-
ages, the clearing I
2t is found by multi-
plying 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 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 .
Electrical Characteristics
7-11-01
SB01191
R


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