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KAC-10

High Speed Fuses

Unspecified 

High Speed Fuses

North American — FWA 150V: 70-1000A

FWA

Specifications

Description: North American style

stud-mount fuses.

Dimensions: See Dimensions

illustrations.

Ratings:

Volts: — 150Vac

Amps: — 70-1000A

IR: — 100kA Sym. (70-400A)

— 200kA Sym. (450-1000A)

— 20kA @150Vdc (70-800A)

— 100kA @ 80Vdc (70-400A)

Agency Information: CE, UL Recognized

Electrical Characteristics

Total Clearing I2t

1.5

The total clearing I2t at rated

K

voltage and at power factor of 1.0

15% are given in the electri-

cal characteristics. For other

0.5

voltages, the clearing I2t is

1)

found by multiplying by cor-

rection factor, K, given as a 0.3

0.2

2)

function of applied working

voltage, Eg, (rms).

0.15

22

70 102

Eg

150

1) 500-1000A Range

2) 70-400A Range

Dimensions (in)

Fig. 1: 70-400A

2.656

2.188

1.936

1.156

0.750 0.312

Fig. 2: 500-1000A

3.500

2.438

1.250

1.000

0.406

1mm = 0.0394 “ / 1” = 25.4mm

1.000

0.438

0.125

1.500

0.250

Arc Voltage

This curve gives the peak

UL

arc voltage, UL, which may 300

appear across the fuse dur-

ing its operation as a func-

tion of the applied working 200

voltage, Eg, (rms) at a

power factor of 15%.

100

Power Losses

Eg

Watts loss at rated current

50

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 Kp

0.8

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

30 40 50 60

Catalog Numbers

Electrical Characteristics

Rated

I2t (A2 Sec)

Catalog

Current

Clearing

Number

RMS-Amps Pre-arc

at 150V

FWA-70B

70

470

4000

FWA-80B

80

670

6000

FWA-100B

100

1200

12000

FWA-125B

125

1870

18000

FWA-150B

150

2700

26000

FWA-200B

200

4780

45000

FWA-250B

250

7470

70000

FWA-300B

300

10760

100000

FWA-350B

350

15700

140000

FWA-400B

400

20300

180000

FWA-500A

500

39000

120000

FWA-600A

600

46000

140000

FWA-700A

700

75000

220000

FWA-800A

800

92000

280000

FWA-1000A

1000

170000

510000

• Watts loss provided at rated current.

• See accessories on page 106.

100

150

Ib

70 80 90 100%

Watts

Loss

6.9

7.7

9.0

11.2

13.5

17.6

22.5

27.0

30.6

35.2

35.0

47.0

49.0

58.0

60.0

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

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

93

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