High Speed Fuses0 pages

High Speed Fuses

Ferrule — FWH 500V: 1-30A
FWH (14 x 51mm)

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%.

300
100

Total Clearing I2t
1.5
K
1.0

UL

1.2
103

800
600
500
400
Eg
200

300

400

500

1.0
Kp
0.8
0.6
0.5
0.4

High Speed
Fuses

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

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).

1.6

Power Losses

Specifications
Description: Ferrule style high
speed fuses.
Dimensions: See dimensions
illustration.
Ratings:
Volts: — 500Vac/dc
Amps: — 1-30A
IR: — 200kA RMS Sym.
— 50kA @500Vdc
Agency Information: CE, UL Recognition 1- 30A & CSA
Component Acceptance: 5 - 30A.

2.0

0.3
0.2

Ib

0.1
30 40 50

60

70

80 90 100%

Catalog Numbers
0.5
0.3
0.2
0.15
100

Eg
250

400

Watts
Loss
—
—
2.3
—
1.5
1.5
4
—
5.5
6
7
9

• Watts loss provided at rated current.
• See accessories on page 216.

Dimensions - mm (inches)
50.8
(2.000")

500

Catalog
Numbers
Size
FWH-1A14F
FWH-2A14F
FWH-3A14F
FWH-4A14F
FWH-5A14F
FWH-6A14F
14 x 51mm
FWH-10A14F (9⁄16” x 2”)
FWH-12A14F
FWH-15A14F
FWH-20A14F
FWH-25A14F
FWH-30A14F

Electrical Characteristics
Rated
I2t (A2 Sec)
Current
Clearing
RMS-Amps
Pre-arc
at 500V
1
—
—
2
—
—
3
—
—
4
—
—
5
1.6
6.4
6
1.6
6.4
10
3.6
13
12
—
—
15
10
40
20
26
96
25
49
191
30
58
232

14.3
(0.563")

•
•
•
•

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

15.5
(0.610")

Data Sheet: 720008

For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa

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