14

Current-Limiting Effects

of LLSRK (600V) fuses

* Prospective RMS Symmetrical Amperes Short-Circuit Current

** Apparent RMS Symmetrical

Note: Data derived from Peak Let-Thru Curves

Short

Peak Let-Thru Current**

Circuit

for various fuse ratings

Current*

30A

60A

100A

200A

400A

600A

5,000

1,060

1,600 2,100 2,600

4,100

—

10,000

1,350

2,000 2,800 3,400

5,250

8,000

15,000

1,600

2,300 3.200 3,900

6,000

9,000

20,000

1,700

2,600 3,600 4,500

6,700 10,000

25,000

1,900

2,800 3,800 4,800

7,500 11,000

30,000

2,000

3,000 4,100 5,200

8,000 12,000

35,000

2,100

3,100 4,400 5,700

8,500 12,500

40,000

2,200

3,300 4,600 6,000

9,000 13,000

50,000

2,400

3,500 4,900 6,500

9,500 14,000

60,000

2,500

3,800 5,200 7,000 10,000 15,000

80,000

2,700

4,000 5,700 7,750 11,000 17,000

100,000

2,900

4,200 6,200 8,500 12,000 18,000

150,000

3,200

4,600 7,300 10,000 14,000 21,000

200,000

3,300

4,700 8,000 11,000 16,000 23,000

100

200

300

400

600

800

1000

2000

3000

4000

6000

8000

10000

20000

30000

40000

60000

80000

100000

200000

300000

400000

600000

800000

1000000

600A

400A

200A

100A

60A

30A

AVAILABLE FAULT CURRENT

SYMMETRICAL R. M. S. AMPERES

100

200

300

400

600

800

1000

2000

3000

4000

6000

8000

10000

20000

30000

40000

60000

80000

100000

200000

300000

400000

600000

800000

1000000

600A

400A

200A

100A

60A

30A

AVAILABLE FAULT CURRENT

SYMMETRICAL R. M. S. AMPERES

Current-Limiting Effects

of LLNRK (250V) fuses

* Prospective RMS Symmetrical Amperes Short-Circuit Current

** Apparent RMS Symmetrical

Note: Data derived from Peak Let-Thru Curves

Short

Peak Let-Thru Current**

Circuit

for various fuse ratings

Current*

30A

60A

100A

200A

400A

600A

5,000

900

1,400 2,000 2,700

4,800

5,000

10,000

1,100

1,900 2,700 3,500

6,200

8,500

15,000

1,250

2,100 3,100 4,200

7,000

9,500

20,000

1,400

2,400 3,500 4,600

8,000 10,800

25,000

1,500

2,600 3,900 5,000

8,300 11,500

30,000

1,600

2,800 4,000 5,250

9,000 12,000

35,000

1,700

2,850 4,300 5,500

9,500 12,500

40,000

1,800

3,000 4,600 5,800

9,800 13,500

50,000

1,900

3,200 4,800 6,300 10,200 14,000

60,000

2,000

3,500 5,200 6,700 11,000 15,000

80,000

2,200

3,900 5,700 7,200 12,200 16,000

100,000

2,300

4,000 6,000 8,100 12,700 17,000

150,000

2,500

4,500 6,700 9,100 14,000 19,000

200,000

2,600

4,800 7,000 9,700 15,000 20,000

LLNRK

LLSRK