Bussmann
廬
FWA 150V
Rated
Current
RMS-Amps
70-1000A
Ordering Information
Watts
Loss
Part
Number
Carton
Qty.
Carton
Weight
(lbs)
Dimensions
Figure
Number
廬
Type
Electrical Characteristics
I
2
t (A
2
Sec)
Clearing
Pre-arc
at 150V
Curves
See Page
or
(BIF #)
70
470
4000
6.9
FWA-70B
_____________________________________________________________________________________
80
670
6000
7.7
FWA-80B
_____________________________________________________________________________________
_
100
1200
12000
9.0
FWA-100B
_
_____________________________________________________________________________________
125
1870
18000
11.2
FWA-125B
_____________________________________________________________________________________
150
2700
26000
13.5
FWA-150B
_____________________________________________________________________________________
200
4780
45000
17.6
FWA-200B
_____________________________________________________________________________________
250
7470
70000
22.5
FWA-250B
_____________________________________________________________________________________
FWA
_______________________________________________________________________________ _____
300
10760
100000
27.0
FWA-300B
150V
350
15700
140000
30.6
FWA-350B
_____________________________________________________________________________________
400
20300
180000
35.2
FWA-400B
__________________________________________________________________________________________________________________________
500
39000
120000
35.0
FWA-500A
_____________________________________________________________________________________
600
46000
140000
47.0
FWA-600A
_____________________________________________________________________________________
700
75000
220000
49.0
FWA-700A
_____________________________________________________________________________________
800
92000
280000
58.0
FWA-800A
_____________________________________________________________________________________
1000
170000
510000
60.0
FWA-1000A
1 kg = 2.2 lbs
1 lb = 0.45 kg
1
0.18
Fig. 1
page 21
(35785310)
5
2.42
Fig. 2
Interrupting rating 100kA RMS Symmetrical.
Watts loss provided at rated current.
150 Vdc U.L. Recognition on 70 through 800 amperes only. Consult Bussmann for additional ratings.
See accessories on page 20.
Electrical Characteristics
Total Clearing I
2
t
The total clearing I
2
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 multi-
plying by correction factor, K, given as
a function of applied working voltage,
E
g
, (RMS).
1.5
K
Arc Voltage
This curve gives the peak arc voltage,
U
L
, which may appear across the fuse
during its operation as a function of the
applied working voltage, E
g
, (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, K
p
,
is given as a function of the RMS load
current, I
b
, in % of the rated current .
1.0
K
p
0.8
0.6
0.5
0.4
0.3
0.2
U
L
300
1.0
0.5
0.3
0.2
0.15
22
1)
200
2)
100
Eg
E
g
0.1
50
100
150
30 40 50
60
70
I
b
80 90 100%
70
102
150
1) 500-1000 Amp Range
2) 70-400 Amp Range
12-28-98
SB98107
Rev. A
Form No. FWA 150
Page 1 of 2
BIF Doc #720002
1
2
