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KAC-12

High Speed Fuses

Unspecified 

High Speed Fuses

North American — FWA 130V: 1000-4000A

FWA

Specifications

Description: North American

style flush-end high speed fuses.

Dimensions: See Dimensions

illustrations.

Ratings:

Volts: — 130Vac

Amps: — 1000-4000A

IR: — 200kA RMS Sym.

— 50kA @130Vdc

Agency Information: CE, UL Recognized on 1000-2000A

fuses

Electrical Characteristics

Total Clearing I2t

The total clearing I2t at

rated voltage and at power

factor of 15% are given in

1.5

K

1.0

the electrical characteris-

tics. For other voltages, the 0.5

clearing I2t is found by

multiplying by correction

0.3

factor, K, given as a func- 0.2

tion of applied working

voltage, Eg, (rms).

0.15

26

65

Eg

104 130

Dimensions (in)

Catalog Number

FWA-1000AH-2000AH

FWA-2500AH-3000AH

FWA-4000AH

Fig. B C D Thread Depth

1 2.0 1.0 — Tapped 3⁄8”-24 x 1⁄2”

1 3.0 1.5 — Tapped 1⁄2”-20 x 1⁄2”

2 3.5 1.5 1.5 Tapped 1⁄2”-20 x 1⁄2”

1mm = 0.0394∑ / 1∑ = 25.4mm

Fig. 1: 1000-3000A

Fig. 2: 4000A

1.875

1.875

Arc Voltage

This curve gives the peak

UL

arc voltage, UL, which

may appear across the

300

fuse during its operation

as a function of the

200

applied working voltage,

Eg, (rms) at a power fac- 100

tor of 15%.

Eg

Power Losses

50

100

150

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 correc-

1.0

0.8

Kp

0.6

0.5

0.4

0.3

tion factor, Kp, is given as 0.2

a function of the RMS load

current, Ib, in % of the

rated current.

0.1

Ib

30 40 50 60 70 80 90 100%

Catalog Numbers

Electrical Characteristics

I2t (A2 Sec)

Catalog

Rated Current

Clearing Watts

Numbers

RMS-Amps

Pre-arc at 130V Loss

FWA-1000AH

1000

170000 460000

60

FWA-1200AH

1200

270000 730000

70

FWA-1500AH

1500

520000 1400000

78

FWA-2000AH

2000

860000 2400000 108

FWA-2500AH

2500

1500000 4100000 130

FWA-3000AH

3000

2100000 5700000 150

FWA-4000AH

4000

3400000 9200000 257

• Watts loss provided at rated current.

• See accessories on page 106.

Features and Benefits

• Excellent dc performance

• Low arc voltage and low energy let-through (I2t)

• Low watts loss

• Superior cycling capability

Typical Applications

• DC common bus

• DC drives

• Power converters/rectifiers

• Reduced voltage starters

D

B

C

B

C

For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp

91

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