Bussmann
廬
FWA 150V
Type
Rated
Current
RMS-Amps
70-1000A
Electrical Characteristics
I
2
t (A
2
Sec)
Clearing
Pre-arc
at 150V
Ordering Information
Watts
Loss
Part
Number
Carton
Qty.
Carton
Weight
(lbs)
Dimensions
Figure
Number
廬
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
5
2.42
Fig. 2
Interrupting rating 100kA RMS Symmetrical for ampere ratings 70-400.
Interrupt rating 200kA RMS Symmetrical for ampere ratings 450-1000.
Watts loss provided at rated current.
150 Vdc U.L. Recognition on 70 through 800 amperes only. Consult Bussmann for additional ratings.
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).
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 .
1.5
K
U
L
300
1.0
K
p
0.8
0.6
0.5
0.4
0.3
0.2
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
1-17-01
SB00233
Form No. FWA 150
Page 1 of 2
BIF Doc #720002
1
2
