KLLU Datasheet, PDF (3/3 Pages) Littelfuse – General Purpose Fuses

General Purpose Fuses
KLLU Class L Fuses
600 VAC  •  Time-Delay  •  601 – 4000 Amperes
Current-Limiting Effects of KLLU (600V) fuses
Short-Circuit Current*
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
50,000
60,000
80,000
100,000
150,000
200,000
800A
5,000
10,000
11,900
13,000
14,000
14,500
15,000
16,000
17,000
18,000
19,000
21,000
24,000
26,000
Apparent RMS Symmetrical Current for Various Fuse Ratings
1200A
5,000
10,000
15,000
18,500
20,000
21,000
22,000
23,000
24,000
26,000
28,000
30,000
35,000
38,000
1600A
5,000
10,000
15,000
20,000
25,000
26,500
28,500
30,000
32,000
34,000
36,000
38,000
44,000
48,000
2000A
5,000
10,000
15,000
20,000
25,000
30,000
34,000
35,000
38,000
42,000
44,000
46,000
50,000
53,000
3000A
5,000
10,000
15,000
20,000
25,000
30,000
35,000
37,000
39,000
43,000
46,000
48,000
51,000
60,000
* Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
4000A
5,000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
44,000
50,000
54,500
57,500
68,000
74,000
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
28
CURRENT IN AMPERES
565001
10000000
1000000
100000
10000
4000A
3000A
2000A
1600A
1200A
800A
1000
AVAILABLE FAULT CURRENT
SYMMETRICAL R.M.S. AMPERES
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© 2005 Littelfuse • POWR-GARD^™ Products Catalog