FWH (14 x 51mm)
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.
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 elec-
trical characteristics. For
other voltages, the clearing
I
2
t is found by multiplying 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.
Catalog Numbers
Electrical Characteristics
Rated I
2
t (A
2
Sec)
Catalog Current Clearing Watts
Numbers Size RMS-Amps Pre-arc at 500V Loss
FWH-1A14F 1 — — —
FWH-2A14F 2 — — —
FWH-3A14F 3 — — 2.3
FWH-4A14F 4 — — —
FWH-5A14F 5 1.6 6.4 1.5
FWH-6A14F 14 x 51mm 6 1.6 6.4 1.5
FWH-10A14F (
9
⁄16” x 2”) 10 3.6 13 4
FWH-12A14F 12 — — —
FWH-15A14F 15 10 40 5.5
FWH-20A14F 20 26 96 6
FWH-25A14F 25 49 191 7
FWH-30A14F 30 58 232 9
• Watts loss provided at rated current.
• See accessories on page 216.
Features and Benefits
• Excellent cycling capability and DC performance
• Low arc voltage and low energy let-through (I
2
t)
• 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
