General Purpose Fuses

28

w w w . l i t t e l f u s e . c o m

KLLU Class L Fuses

600 VAC • Time-Delay • 601 – 4000 Amperes

1000

800

600

400

300

200

100

80

60

40

30

20

10

8

6

4

3

2

1

.8

.6

.4

.3

.2

.1

.08

.06

.04

.03

.02

.01

CURRENT IN AMPERES

565001

SYMMETRICAL R.M.S. AMPERES

AVAILABLE FAULT CURRENT

800A

1200A

1600A

2000A

3000A

4000A

10000000

1000000

100000

10000

1000

Current-Limiting Effects of KLLU (600V) fuses

Short-Circuit Current*

Apparent RMS Symmetrical Current for Various Fuse Ratings

800A

1200A

1600A

2000A

3000A

4000A

5,000

5,000

5,000

5,000

5,000

5,000

5,000

10,000

10,000

10,000

10,000

10,000

10,000

10,000

15,000

11,900

15,000

15,000

15,000

15,000

15,000

20,000

13,000

18,500

20,000

20,000

20,000

20,000

25,000

14,000

20,000

25,000

25,000

25,000

25,000

30,000

14,500

21,000

26,500

30,000

30,000

30,000

35,000

15,000

22,000

28,500

34,000

35,000

35,000

40,000

16,000

23,000

30,000

35,000

37,000

40,000

50,000

17,000

24,000

32,000

38,000

39,000

44,000

60,000

18,000

26,000

34,000

42,000

43,000

50,000

80,000

19,000

28,000

36,000

44,000

46,000

54,500

100,000

21,000

30,000

38,000

46,000

48,000

57,500

150,000

24,000

35,000

44,000

50,000

51,000

68,000

200,000

26,000

38,000

48,000

53,000

60,000

74,000

* Prospective RMS Sym­m­etrical Am­peres Short-Circuit Current

Note: Data Derived from Peak Let-Thru Curves