FWP (14 x 51mm)
Specifications
Description: Ferrule style high
speed fuses with and without
indicating striker.
Dimensions: See dimensions
illustrations.
Ratings:
Volts: — 690Vac (IEC)
— 700Vac (UL)
— 800Vdc (5-50A)
Amps: — 1-50A
IR: — 200kA RMS Sym.
— 50kA @800Vdc
Agency Information: CE, UL Recognition, CSA
Component Acceptance for versions without indicator only.
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
Rated I2t (A2Sec)
Catalog Current Minimum Clearing At Watts
Numbers Size RMS-Amps Melting Rated Voltage Loss
Without Striker
FWP-1A14Fa 1 — — —
FWP-2A14Fa 2 — — —
FWP-2.5A14Fa 2.5 — — —
FWP-3A14Fa 3 — — —
FWP-4A14Fa 4 — — —
FWP-5A14Fa 14 x 51mm 5 1.6 11.0 1.5
FWP-10A14Fa (9⁄16" x 2") 10 3.6 38.5 4
FWP-15A14Fa 15 8.6 70 5.5
FWP-20A14Fa 20 26.0 230 6
FWP-25A14Fa 25 46.5 375 7
FWP-30A14Fa 30 58 485 9
FWP-32A14Fa 32 68 600 7.6
FWP-40A14Fa 40 84 750 8
FWP-50A14Fa 50 200 1800 9
With Striker
FWP-10A14FI 10 3.6 38.5 4
FWP-15A14FI 15 8.6 70 5.5
FWP-20A14FI 14 x 51mm 20 26.0 230 6
FWP-25A14FI (9⁄16” x 2”) 25 46.5 375 7
FWP-30A14FI 30 58 485 9
FWP-32A14FI 32 68 600 7.6
FWP-40A14FI 40 84 750 8
FWP-50A14FI 50 200 1800 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 (I2t)
• Low watts loss in a compact size
• Used with finger-safe holders/blocks