Littelfuse RLN User Manual
POWR-GARD® Fuse Datasheet
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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 shortcircuit 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
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, specif y LKN (250V) or LKS (600V) plus
ampere rating.
LFR fuse holders
Ordering Information
AMPERE R ATINGS
1 6 20 45 90 175 350
2 8* 25 50 100 200 400
3 10 30 60 110 225
4 12* 35 70 125 250
5 15 40 80 150 300
*RL S on ly.
†These amper e ratings require two links p er fuse.
TYPE VOLTA GE CATA LOG NUMBE R ORDERING NUMBER
FUSE 600 RLS020 0RLS020.T
FUSE 250 RLN020 0RLN020.T
LINK 600 LKS025 0LKS025.S
LINK 250 LKN030 0LKN030.S
†
450
500
600
†
†
†
†
†
†
†
Dimensions
AMPERES
1 – 30 1
35 – 60 1
70 – 100 2
110 – 200 2
225 – 400 2
450 – 600 2
REF ER TO
FIG. NO.
B
FIG. 1
C
SERIES
RLN 2 (50.8)
RLS 5 (127.0)
RLN 3 (76.2)
RLS 5
RLN 5
RLS 7
RLN 7
RLS 9
RLN 8
RLS 11
RLN 10
RLS 13
1
⁄2 (139.7) 1 (25.4)
7
⁄8 (149.2) 1 (25.4) 1 (25.4) 11⁄16 (27.0 )
7
⁄8 (200.0) 11⁄4 (31.8 ) 1 (25.4) 15⁄16 (33.3)
1
⁄8 (181.0 ) 11⁄2 (38.1 ) 13⁄8 (34.9) 19⁄16 (39.7)
5
⁄8 (244.5) 13⁄4 (44.5) 13⁄8 (34.9) 127⁄32 (46.8)
5
5
3
3
D
B
C
FD
FIG. 2
DIMENSIONS INCHES (mm)
A B C D E F G
1
⁄2 (12.7 )
3
⁄4 (19 .1)
3
⁄4 (19 .1)
⁄8 (219.1) 2 (5 0.8 ) 17⁄8 (47. 6) 23⁄32 (53.2)
⁄8 (295.3) 21⁄2 (63.5) 17⁄8 (47. 6) 219⁄32 (65.9)
⁄8 (263.5) 21⁄2 (63.5) 21⁄4 (5 7. 2 ) 219⁄32 (65.9)
⁄8 (339.7) 3 (76.2) 21⁄4 (5 7. 2 ) 33⁄32 (78.6)
1
⁄2 (12.7 )
5
⁄8 (15.9)
5
⁄8 (15.9)
5
⁄8 (15.9) 11⁄16 (27.0 ) — — —
1 of 1
9
⁄16 (14.3) — — —
13
⁄16 (20.6) — — —
13
⁄16 (20.6) — — —
1
⁄8 (3.2)
1
⁄8 (3.2)
3
⁄16 (4.8) 11⁄8 (28.6) 17⁄8 (47. 6)
3
⁄16 (4.8) 11⁄8 (28.6) 23⁄32 (53.2)
1
⁄4 (6.4) 15⁄8 (41. 3 ) 213⁄32 (61.1)
1
⁄4 (6.4) 15⁄8 (41. 3 ) 27⁄8 (73.0)
1
⁄4 (6.4) 2 (50.8) 27⁄8 (73.0)
1
⁄4 (6.4) 2 (50.8) 37⁄16 (8 7. 3 )
3
⁄4 (19 .1) 15⁄16 (33.3)
3
⁄4 (19 .1) 19⁄16 (39.7)
© 2012 Littelfuse POWR-GARD® Productswww.littelfuse.com
G
Rev: 100112
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