
POWR-GARD® Fuse Datasheet
UL Class J
JLS SERIES FUSES
600 VAC • Fast-Acting • 1-600 Amperes
Specifications
Voltage Ratings: 600 VAC
Interrupting Ratings: 200 kA rms symmetrical
Ampere Range: 1–600 A
Approvals: Standard 248-8, Class J
UL Listed (File No. E81895)
CSA Certified (File No. LR29862)
Federal Specification WF-1814
(QPL- W-F -1814)
Description
JLS series fuses provide space saving, fast-acting overload and
short-circuit protection for non-inductive loads. For ap pli ca tions
where short- duration surg es and spikes may cause nuisance
fuse opening, consider the use of Littelfuse POWR-PRO
or JTD_ID series time-delay fuses.
®
JTD
Applications
• General purpose circuits with little or no motor load.
• Resistive loads, such as resistance electric heat.
• Loads requiring fast-acting overload protection, such as
equipment containing solid-state devices.
Ordering Information
AMPERE RATINGS
1 20 45 90 175 350
3 25 50 100 200 400
6 30 60 110 225 450
10 35 70 125 250 500
15 40 80 150 300 600
TYPE SERIES AMPER AGE
NON-INDICATING JLS 110 JL S110 0JLS110 .X
CATA LOG
NUMBER
SYSTEM
NUMBER
Web Resources
TC curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/jls
Recommended Fuseholders
LFJ60 Series
LPSJ Series
1
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com

POWR-GARD® Fuse Datasheet
UL Class J
JLS SERIES FUSES
Dimensions in inches (mm)
C
D
G
F
A
Fig. 1
AMPERES
1 – 30 1 2
35 – 60 1 2
70 – 100 2 2
110 – 200 2 3 (76.2) 4
225 – 400 2 3
450 – 600 2 3
*70-100 A JLS dimension = 1 (25.4 )
REF ER TO
FIG. NO.
A B C D E F G H
1
⁄4 (57.2 ) —
3
⁄8 (60.3) —
5
⁄8 (66.7) 317⁄32 (89.7) 323⁄32 (94.5) 45⁄8 (11 7.5 ) 11⁄8 (28.6)*
3
⁄8 (85.7) 51⁄8 (130.2) 53⁄8 (136.5) 71⁄8 (181.0) 2 (50.8) 15⁄8 (41. 3)
3
⁄4 (95.3) 527⁄32 (148 .4) 65⁄32 (156.4 ) 8 (203.2) 21⁄2 (63.5) 2 (50.8)
A
B
C
D
Fig. 2
DIMENSIONS IN INCHES (mm)
1
⁄2 (12.7 )
5
⁄8 (15. 9) 11⁄16 (27. 0) — — — —
9
⁄32 (108.7) 415⁄32 (113.5) 53⁄4 (14 6.1) 11⁄2 (38 .1) 11⁄8 (28.6)
13
⁄16 (20.6) — — — —
3
⁄4 (19 .1)
E
13
9
⁄32 (7.1)
9
⁄32 (7.1)
⁄32 (10.3)
17
⁄32 (13.5)
H
1
⁄8 (3.2)
3
⁄16 (4.8)
1
⁄4 (6.4)
3
⁄8 (9.5)
2
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com