Littelfuse KLLU User Manual
POWR-GARD® Fuse Datasheet
CLASS L – KLLU SERIES FUSES
600 VAC • Time-Delay • 601-4000 A
Ordering Information
AMPERE R ATINGS
601 750 1000 1400 1800 3000
650 800 1200 1500 2000 3500
700 900 1350 1600 2500 4000
SERIES AMPER AGE CATALOG NUMBE R ORDERING NUMBER
KLLU 601 KLLU601 KL LU6 01.X
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/kllu
Description
KLLU series fuses meet or exceed UL requirements for
UL Class L fuses. The KLLU series offers an economical
alternative to KLPC POWR-PRO
peak let through current.
®
fuse with a slightly higher
Applications
• Service switches
• Switchboard mains and feeders
• Motor control center mains
• Large motor branch circuits
• Circuit breaker protection
Features/Benefits
• Current-Limiting
• Easily coordinated with other system components
• 200 kA AC Interrupting Rating
Specifications
Voltage Ratings AC: 60 0 V
DC: 30 0 V
Interrupting Ratings AC: 200 kA
DC: 20 k A
Ampere Range 601–4000 A
Approvals Standard 248-10, Class L
UL Listed (File: E81895)
CSA Certified (File: LR29862)
DC: Littelfuse self-certified
Dimensions
Please refer to the Class L dimensions page 2
Peak Let-Thru Curve
KLLU
Note: For more information, see Peak Let-Thru Table
1 of 2
© 2012 Littelfuse POWR-GARD® Productswww.littelfuse.com
Rev: 100112
POWR-GARD® Fuse Datasheet
FIG. 5
FIG. 4
CLASS L – KLLU SERIES FUSES
Current-Limiting Effects of KLLU (600 V) 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
*Prospec tive RMS Sym met ri cal A mperes Short- Circuit Cur rent • Note: Data d erived from Peak Let-Thru Curves
80 0 A 120 0 A 1600 A 2000 A 3000 A 4000 A
5,000 5,000 5,000 5,000 5,000 5,000
10,000 10,000 10,000 10,000 10,000 10,000
11,900 15,000 15,000 15,000 15,000 15,000
13,000 18,500 20,000 20,000 20,000 20,000
14,000 20,000 25,000 25,000 25,000 25,000
14,500 21,000 26,500 30,000 30,000 30,000
15,000 22,000 28,500 34,000 35,000 35,000
16,000 23,000 30,000 35,000 37,000 40,000
17,000 24,000 32,000 38,000 39,000 44,000
18,000 26,000 34,000 42,000 43,000 50,000
19,000 28,000 36,000 44,000 46,000 54,500
21,000 30,000 38,000 46,000 48,000 57,500
24,000 35,000 44,000 50,000 51,000 68,000
26,000 38,000 48,000 53,000 60,000 74,000
Dimensions
AMPERES
200-800 1
900-1200 2
1300-1600 2
1800-2000 2
2100-2500 3
2501-3000 3
3500-4000 4
4500-5000 5
6000 5
FIG.
NO.
A B C D E F G H J K L M N
3
3
4
3
(95.3)
3
3
⁄
(95.3)
3
3
⁄
(95.3)
3
3
⁄
(95.3)
4
(101.6 )
4
(101.6 )
4
(101.6 )
4
(101.6 )
4
(101.6 )
4
⁄
5
⁄
(14 6.1)
3
4
4
5
⁄
(14 6.1)
3
4
4
5
⁄
(14 6.1)
3
4
4
5
⁄
(14 6.1)
3
4
⁄
5
(14 6.1)
3
4
⁄
5
(14 6.1)
3
4
⁄
5
(14 6.1)
3
4
⁄
5
(14 6.1)
3
4
⁄
5
(14 6.1)
J
APPA RE NT R MS SYMMETRICA L CURRENT FOR VA RIOUS F USE RATINGS
DIMENSIONS INCHES (mm)
3
6
(171. 5 )
3
6
(171. 5 )
3
6
(171. 5 )
3
6
(171. 5 )
3
6
(171. 5 )
3
6
(171. 5 )
3
6
(171. 5 )
—
—
4
⁄
4
⁄
4
⁄
4
⁄
4
⁄
4
⁄
4
⁄
— —
1
4
9
⁄
(235.0)
1
4
9
⁄
(235.0)
1
4
9
⁄
(235.0)
1
4
9
⁄
(235.0)
1
4
9
⁄
(235.0)
1
4
9
⁄
(235.0)
1
4
9
⁄
(235.0)
1
4
9
⁄
(235.0)
9
(241.3 )
9
(241.3 )
9
(241.3 )
9
(241.3 )
9
(241.3 )
9
(241.3 )
—
—
5
8
8
⁄
3
⁄
3
⁄
3
⁄
3
⁄
3
⁄
3
⁄
3
⁄
3
⁄
4
4
4
4
4
4
4
4
— —
— —
— —
— —
5
8
1
⁄
(41. 3 )
5
8
1
⁄
(41. 3 )
3
4
1
⁄
(44.5)
5
8
1
⁄
(41. 3 )
5
8
1
⁄
(41. 3 )
J
1
(44.5)
1
(44.5)
3
(82.6)
3
(82.6)
3
(82.6)
(219.1 )
1
2
⁄
10
(27 3.1)
1
2
⁄
10
(27 3.1)
1
2
⁄
10
(27 3.1)
1
2
⁄
10
(27 3.1 )
1
2
⁄
10
(27 3.1)
1
2
⁄
10
(27 3.1)
10
(27 3.1)
10
(27 3.1)
3
4
⁄
3
4
⁄
1
4
⁄
1
4
⁄
1
4
⁄
2
(50.8)
2
(50.8)
3
2
(60.3)
3
2
(69.9)
1
3
(88.9)
1
2
(63.5)
1
2
(63.5)
3
8
⁄
(76.2)
1
4
⁄
3
(88.9)
5
2
⁄
(12 7. 0 )
4
(101.6 )5(12 7. 0 )
3
4
(120.7)
1
5
(133 .4 )
1
5
(133 .4 )
3
4
⁄
5
(14 6.1)
1
4
⁄
7
(181.0 )
1
4
⁄
7
(181.0 )
3
2
⁄
2
⁄
2
⁄
4
⁄
⁄
(9.5)
3
⁄
(9.5)
7
16
⁄
(11.1 )
1
⁄
(12.7 )
3
⁄
(19 .1)
3
⁄
(19 .1)
3
⁄
8
8
2
4
4
4
(19 .1)
1
8
⁄
(25.4)
1
8
⁄
(25.4)
J
H
(15.9) x (28.6 )
(15.9) x (19.1)
(15.9) x (19.1)
(15.9) x (19.1)
(15.9) x (19.1)
(15.9) x (19.1)
(15.9) x (34.9)
5
8
⁄
5
8
⁄
5
8
⁄
5
8
⁄
5
8
⁄
5
8
⁄
5
8
⁄
x 1
5
8
⁄
(15. 9 )
5
8
⁄
(15. 9 )
x 1
x
x
x
x
x
DIA.
DIA.
1
8
⁄
3
4
⁄
3
4
⁄
3
4
⁄
3
4
⁄
3
4
⁄
3
8
⁄
—
5
1
8
8
⁄
x 1
⁄
(15.9) x (28.6 )
(15.9) x (28.6 )
(15.9) x (28.6 )
(15.9) x (28.6 )
(15.9) x (28.6 )
5
1
8
8
⁄
x 1
⁄
5
1
8
8
⁄
x 1
⁄
5
1
8
8
⁄
x 1
⁄
5
1
8
8
⁄
x 1
⁄
5
3
8
8
⁄
x 1
⁄
(15.9) x (34.9)
—
—
A
B
C
M
F
ABC
N
M
FIG.1
J
H
ABC
N
M
D E
F
G
BD
2 of 2
FIG.2
J
H
G
D E F
A F
M
ABC
N
M
D E F
G
FIG. 3
L
K
© 2012 Littelfuse POWR-GARD® Productswww.littelfuse.com
Rev: 100112
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