POWR-GARD® Fuse Datasheet
Class H – RlN / Rls seRies fuses & lkN / lks liNks
250/600 VAC • Renewable • 1-600 A
Guide For Proper Renewable Fuse Usage
Renewable fuses should only be used where short-
circuit currents are known to be less than 10,000
amperes, and where correct replacement of open
links is assured. Renewable fuses and links are not
recommended for new applications.
Still Using Class H Fuses?
Littelfuse offers several fuse and fuse block
combinations that can greatly improve electrical safety.
LLNRK / LLSRK
FLNR / FLSR fuses
LFR fuse holders
Description
Littelfuse RLN and RLS series renewable fuses have
traditionally been used to provide low cost protection.
However, generally increased levels of available fault current
Ordering Information
and the distinct possibility that renewable fuses may be
improperly renewed, have rendered them unsafe. The use of
these fuses in new applications is prohibited by law.
ampeRe RatiNgs
†
†
†
†
†
1
2
3
4
6
8*
10
12*
15
20
25
30
35
40
45
90
175
200
350
400
450
500
600
50
60
70
80
100
110
125
150
†
225
250
300
†
†
Specifications
Voltage Ratings
5
AC: 250 V (RLN); 600 V (RLS)
*RLS only.
Interrupting Ratings AC: 10 kA rms symmetrical
†These ampere ratings require two links per fuse.
Ampere Range
Approvals
1–600 A
type
Voltage
Catalog NumbeR
oRdeRiNg NumbeR
Standard 248-6, Class H
UL Listed (File: E81895)
CSA Certified (File: LR29862)
To order, specify LKN (250V) or LKS (600V) plus
ampere rating.
FUSE
FUSE
LꢀNK
LꢀNK
600
250
600
250
RLS020
RLN020
LKS025
LKN030
0RLS020.T
0RLN020.T
0LKS025.S
0LKN030.S
Fuse Links
Dimensions
A
E
A
B
D
C
C
G
B
F
D
FIG. 1
RefeR to
FIG. 2
dimeNsioNs iNCHes (ꢀꢀ)
ampeRes
seRies
fig. No.
A
B
C
D
E
F
G
1
1
9
2
2
8
8
8
16
16
RLN
RLS
RLN
RLS
RLN
RLS
RLN
RLS
RLN
RLS
RLN
RLS
2 (50.8)
5 (127.0)
⁄
(12.7)
(19.1)
(19.1)
⁄
(12.7)
(15.9)
(15.9)
(15.9)
⁄
(14.3)
(20.6)
(20.6)
—
—
—
—
—
—
—
—
—
1 – 30
1
1
2
2
2
2
3
5
5
5
13
4
⁄
⁄
⁄
⁄
⁄
⁄
—
3
13
4
16
16
3 (76.2)
⁄
—
35 – 60
1
1
2
5 ⁄ (139.7)
1 (25.4)
1 ⁄ (27.0)
—
7
1
1
1
3
5
8
16
8
4
4
16
5 ⁄ (149.2)
1 (25.4)
1 (25.4)
1 ⁄ (27.0)
⁄
⁄
(3.2)
⁄
⁄
(19.1)
(19.1)
1 ⁄ (33.3)
70 – 100
110 – 200
225 – 400
450 – 600
7
1
5
3
9
8
4
16
8
16
7 ⁄ (200.0)
1 ⁄ (31.8)
1 (25.4)
1 ⁄ (33.3)
(3.2)
1 ⁄ (39.7)
1
1
3
9
3
1
7
8
2
8
16
16
16
4
8
8
7 ⁄ (181.0)
1 ⁄ (38.1)
1 ⁄ (34.9)
1 ⁄ (39.7)
⁄
⁄
(4.8)
(4.8)
(6.4)
(6.4)
(6.4)
(6.4)
1 ⁄ (28.6)
1 ⁄ (47.6)
5
3
3
27
3
1
3
8
4
8
32
8
32
9 ⁄ (244.5)
1 ⁄ (44.5)
1 ⁄ (34.9)
1 ⁄ (46.8)
1 ⁄ (28.6)
2 ⁄ (53.2)
5
7
3
1
5
13
8
8
32
8
32
8 ⁄ (219.1)
2 (50.8)
1 ⁄ (47.6)
2 ⁄ (53.2)
⁄
1 ⁄ (41.3)
2 ⁄ (61.1)
5
1
7
19
1
5
7
8
2
8
32
4
8
8
11 ⁄ (295.3)
2 ⁄ (63.5)
1 ⁄ (47.6)
2 ⁄ (65.9)
⁄
1 ⁄ (41.3)
2 ⁄ (73.0)
3
1
1
19
1
7
8
2
4
32
4
8
10 ⁄ (263.5)
2 ⁄ (63.5)
2 ⁄ (57.2)
2 ⁄ (65.9)
⁄
2 (50.8)
2 (50.8)
2 ⁄ (73.0)
3
1
3
1
7
8
4
32
4
16
13 ⁄ (339.7)
3 (76.2)
2 ⁄ (57.2)
3 ⁄ (78.6)
⁄
3 ⁄ (87.3)
© 2012 Littelfuse POWR-GARD® Products
Rev: 100112
1 of 1
www.littelfuse.com
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