POWR-GARD
®
Fuse Datasheet
© 2012 Littelfuse POWR-GARD
®
Productswww.littelfuse.com
Rev: 100112
1 of 1
CLASS H – RLN / RLS SERIES FUSES & LKN / LKS LINKS
250/600 VAC • Renewable • 1-600 A
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
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.
Specifications
Voltage Ratings AC: 250 V (RLN); 600 V (RLS)
Interrupting Ratings AC: 10 kA rms symmetrical
Ampere Range 1–600 A
Approvals Standard 248-6, Class H
UL Listed (File: E81895)
CSA Certified (File: LR29862)
Fuse Links To order, specify LKN (250V) or LKS (600V) plus
ampere rating.
*RLS only.
†These ampere ratings require two links per fuse.
AMPERE RATINGS
1 6 20 45 90 175 350
†
2 8* 25 50 100 200 400
†
3 10 30 60 110 225
†
450
†
4 12* 35 70 125 250
†
500
†
5 15 40 80 150 300
†
600
†
Ordering Information
TYPE VOLTAGE CATALOG NUMBER ORDERING NUMBER
FUSE 600 RLS020 0RLS020.T
FUSE 250 RLN020 0RLN020.T
LINK 600 LKS025 0LKS025.S
LINK 250 LKN030 0LKN030.S
C
C
D
B
B
FD
G
FIG. 1
FIG. 2
AMPERES
REFER TO
FIG. NO.
SERIES
DIMENSIONS INCHES (mm)
A B C D E F G
1 – 30 1
RLN 2 (50.8)
1
⁄
2
(12.7)
1
⁄
2
(12.7)
9
⁄
16
(14.3) — — —
RLS 5 (127.0)
3
⁄
4
(19.1)
5
⁄
8
(15.9)
13
⁄
16
(20.6) — — —
35 – 60 1
RLN 3 (76.2)
3
⁄
4
(19.1)
5
⁄
8
(15.9)
13
⁄
16
(20.6) — — —
RLS 5
1
⁄
2
(139.7) 1 (25.4)
5
⁄
8
(15.9) 1
1
⁄
16
(27.0 ) — — —
70 – 100 2
RLN 5
7
⁄
8
(149.2) 1 (25.4) 1 (25.4) 1
1
⁄
16
(27.0 )
1
⁄
8
(3.2)
3
⁄
4
(19.1) 1
5
⁄
16
(33.3)
RLS 7
7
⁄
8
(200.0) 1
1
⁄
4
(31.8) 1 (25.4) 1
5
⁄
16
(33.3)
1
⁄
8
(3.2)
3
⁄
4
(19.1) 1
9
⁄
16
(39.7)
110 – 200 2
RLN 7
1
⁄
8
(181.0) 1
1
⁄
2
(38.1) 1
3
⁄
8
(34.9) 1
9
⁄
16
(39.7)
3
⁄
16
(4.8) 1
1
⁄
8
(28.6) 1
7
⁄
8
(47.6 )
RLS 9
5
⁄
8
(244.5) 1
3
⁄
4
(44.5) 1
3
⁄
8
(34.9) 1
27
⁄
32
(46.8)
3
⁄
16
(4.8) 1
1
⁄
8
(28.6) 2
3
⁄
32
(53.2)
225 – 400 2
RLN 8
5
⁄
8
(219.1) 2 (50.8) 1
7
⁄
8
(47.6 ) 2
3
⁄
32
(53.2)
1
⁄
4
(6.4) 1
5
⁄
8
(41.3) 2
13
⁄
32
(61.1)
RLS 11
5
⁄
8
(295.3) 2
1
⁄
2
(63.5) 1
7
⁄
8
(47.6 ) 2
19
⁄
32
(65.9)
1
⁄
4
(6.4) 1
5
⁄
8
(41.3) 2
7
⁄
8
(73.0)
450 – 600 2
RLN 10
3
⁄
8
(263.5) 2
1
⁄
2
(63.5) 2
1
⁄
4
(57.2) 2
19
⁄
32
(65.9)
1
⁄
4
(6.4) 2 (50.8) 2
7
⁄
8
(73.0)
RLS 13
3
⁄
8
(339.7) 3 (76.2) 2
1
⁄
4
(57.2) 3
3
⁄
32
(78.6)
1
⁄
4
(6.4) 2 (50.8) 3
7
⁄
16
(8 7. 3 )
Dimensions
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
(5 pages)
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