1-30-02 SB02036
®
Form No. FWA 150
Page 1 of 2
BIF Doc #720002
Bussmann®
FWA 150V
70-1000A
Electrical Characteristics Ordering Information Dimensions Curves
Rated I2t (A2Sec) Carton
Current Clearing Watts Part Carton Weight Figure BIF #
Type RMS-Amps Pre-arc at 150V Loss Number Qty. (lbs) Number
70 470 4000 6.9 FWA-70B
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80 670 6000 7.7 FWA-80B
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100 1200 12000 9.0 FWA-100B
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125 1870 18000 11.2 FWA-125B
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150 2700 26000 13.5 FWA-150B 1 0.18
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200 4780 45000 17.6 FWA-200B
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250 7470 70000 22.5 FWA-250B Fig. 1 35785310
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FWA 300 10760 100000 27.0 FWA-300B
_______________________________________________________________________________ _____
150V 350 15700 140000 30.6 FWA-350B
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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 5 2.42
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800 92000 280000 58.0 FWA-800A
_____________________________________________________________________________________
1000 170000 510000 60.0 FWA-1000A
1501027022
1.5
1.0
0.5
0.3
0.2
0.15 Eg
K
1)
2)
UL
Eg
200
100
100 15050
300
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%
Ib
1) 500-1000 Amp Range
2) 70-400 Amp Range
Total Clearing I2t
The total clearing I2t at rated voltage and
at power factor of 15% are given in the
electrical characteristics. For other volt-
ages, the clearing I2t 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 .
nInterrupting rating 100kA RMS Symmetrical for ampere ratings 70-400. 1 kg = 2.2 lbs 1 lb = 0.45 kg
nInterrupt rating 200kA RMS Symmetrical for ampere ratings 450-1000.
nWatts loss provided at rated current.
n(150 Vdc/Interrupting rating 20kA) U.L. Recognition on 70 - 800 amperes.
n(80 Vdc/Interrupting rating 100kA) U.L. Recognition on 70 - 400 amperes.
Electrical Characteristics
®
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. FWA 150
Page 2 of 2
BIF Doc #720002
Bussmann®
FWA 150V
70-1000A
Dimensions
Fig. 1: 70-1000 Amp Range
1-30-02 SB02036
A
E
D
C
F
J
GB
H
Order # Fig. A B C D E F G H J
FWA-70B-400B 1 2.656 1.000 1.156 2.188 1.936 0.312 0.750 0.125 0.438
FWA-500A-1000A 1 3.476 1.500 1.250 2.579 1.917 0.433 1.000 0.250 0.764
Dimension in inches.
1mm = 0.0394∑ 1∑ = 25.4mm
