Form No.
Page 1 of 1
BIF Doc #720008
Bussmann®
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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
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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.
Ferrule
FWH 500V 1-30A ®
Dimensions
500400250100
1.5
1.0
0.5
0.3
0.2
0.15 Eg
K
UL
2.0
1.6
1.2
103
800
600
500
400
300
100 400300200 500
Eg
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.130 40 50 60 70 80 90 100%
Ib
50.8
(2.000")
15.5
(0.610")
14.3
(0.563")
Electrical Characteristics Ordering Information Dimensions Curves
Rated I2t (A2S) Carton
Current Clearing Watts Part Carton Weight Figure
Size RMS-Amps Pre-arc at 500V Loss Number Qty. (kg) Number BIF #
1 — — — FWH-1A14F
2 — — — FWH-2A14F
3 — — 2.3 FWH-3A14F
4 — — — FWH-4A14F
5 1.6 6.4 1.5 FWH-5A14F
14 ≈ 51mm 6 1.6 6.4 1.5 FWH-6A14F 35785298
(·Ω¡§∑) 10 3.6 13 4 FWH-10A14F 10 0.250 Fig. 1
12 — — — FWH-12A14F
15 10 40 5.5 FWH-15A14F
20 26 96 6 FWH-20A14F
25 49 191 7 FWH-25A14F
30 58 232 9 FWH-30A14F
n Interrupting rating 200kA RMS Symmetrical. 1 kg = 2.2 lbs. 1 lb = 0.45 kg
n Watts loss provided at rated current.
n (500 Vdc/Interrupting rating 50kA) U.L. Recognition on 5 through 30 amperes only. Consult Bussmann for additional ratings.
n CSA Component Acceptance: 5 - 30A
Fig. 1: 1-30 Amp Range
Dimension in mm.
1mm = 0.0394∑ 1∑ = 25.4mm
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 .
Electrical Characteristics
7-18-01 SB01191
R
