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参数资料
| 型号： | FWJ-20A14F |
| 厂商： | COOPER INDUSTRIES |
| 元件分类： | 保险丝 |
| 英文描述： | ELECTRIC FUSE, 20A, 1000VAC, 800VDC, 25000A (IR), INLINE/HOLDER |
| 文件页数： | 1/2页 |
| 文件大小： | 72K |
| 代理商： | FWJ-20A14F |
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
208
Ferrule — FWJ 1000V: 20-30A
High Speed Fuses
Dimensions - mm (inches)
66.7
(2.626")
15.9
(0.625")
14.5
(0.571")
FWJ (14 x 67mm)
Specifications
Description:
Ferrule style high
speed fuses.
Dimensions:
See Dimensions
illustration.
Ratings:
Volts: — 1000Vac
Amps: — 20-30A
IR: — 25kA RMS Sym.
— 20kA @ 800Vdc
Agency Information:
CE, UL Recognized
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at
rated voltage and at power
factor of 15% are given
in the electrical
characteristics. For other
voltages, the clearing I2t is
found by multiplying 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.
Catalog Numbers
Electrical Characteristics
Rated
I
2t (A2 Sec)
Catalog
Current
Clearing
Watts
Numbers
Size
RMS-Amps
Pre-arc
at 1000V
Loss
FWJ-20A14F
14 x 67mm
20
25
220
9
FWJ-25A14F
(916”x 258”)
25
33
350
11
FWJ-30A14F
30
52
450
14
Watts loss provided at rated current.
See accessories on page 211.
Features and Benefits
Excellent cycling capability and dc performance
Low arc voltage and low energy let-through (I2t)
Low watts loss in a compact size
Used with finger-safe holders/blocks
Typical Applications
DC common bus
DC drives
Power converters/rectifiers
Reduced voltage starters
1000
800
500
200
1.5
1.0
0.5
0.3
0.2
0.15
Eg
K
2000
1600
1200
800
400
200
600
1000 1400 1800
U
L
E
g
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%
I
b
Data Sheet: 720028
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