High Speed Fuses
North American — FWA 150V: 70-1000A
FWA
Specifications
Description:
North American style
stud-mount fuses.
Dimensions:
See Dimensions
illustrations.
Ratings:
Volts: — 150Vac
Amps: — 70-1000A
IR: — 100kA Sym. (70-400A)
— 200kA Sym. (450-1000A)
— 20kA @150Vdc (70-800A)
— 100kA @ 80Vdc (70-400A)
Agency Information:
CE, UL Recognized
Electrical Characteristics
Total Clearing I t
2
Arc Voltage
This curve gives the peak
arc voltage, UL, which may
appear across the fuse dur-
ing its operation as a func-
tion 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 correc-
tion factor, Kp, is given as
a function of the RMS load
current, Ib, in % of the
rated current.
Catalog Numbers
0.5
0.3
0.2
0.15
22
1)
U
L
300
200
100
E
g
50
1.0
K
p
0.8
0.6
0.5
High Speed
Fuses
0.4
0.3
0.2
100
150
1.5
K
The total clearing I t at rated
voltage and at power factor of
15% are given in the electri-
cal characteristics. For other
voltages, the clearing I
2
t is
found by multiplying by cor-
rection factor, K, given as a
function of applied working
voltage, Eg, (rms).
2
1.0
0.1
30 40 50
60
70
I
b
80 90 100%
2)
Eg
70
102
150
1) 500-1000A Range
2) 70-400A Range
Dimensions (in)
Fig. 1: 70-400A
2.656
2.188
1.936
1.156
0.125
Catalog
Number
FWA-70B
FWA-80B
FWA-100B
FWA-125B
FWA-150B
FWA-200B
FWA-250B
FWA-300B
FWA-350B
FWA-400B
FWA-500A
FWA-600A
FWA-700A
FWA-800A
FWA-1000A
Rated
Current
RMS-Amps
70
80
100
125
150
200
250
300
350
400
500
600
700
800
1000
Electrical Characteristics
I
2
t (A
2
Sec)
Clearing
Pre-arc
at 150V
470
4000
670
6000
1200
12000
1870
18000
2700
26000
4780
45000
7470
70000
10760
100000
15700
140000
20300
180000
39000
120000
46000
140000
75000
220000
92000
280000
170000
510000
Watts
Loss
6.9
7.7
9.0
11.2
13.5
17.6
22.5
27.0
30.6
35.2
35.0
47.0
49.0
58.0
60.0
• Watts loss provided at rated current.
• See accessories on page 106.
0.750 0.312
1.000
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
0.438
Fig. 2: 500-1000A
3.500
2.438
1.250
0.250
1.000
1.500
0.406
1mm = 0.0394 “ / 1” = 25.4mm
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
93
COOPER [ COOPER BUSSMANN, INC. ]
