© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuse Datasheet
UL Class T
1
JLLN/JLLS CLASS T FUSES
300/600 VAC • Fast-Acting • 1-600 Amperes
Description
JLLN/JLLS fuses are less than 1/3 the size of comparable Class R
fuses and are typically used for short circuit protection of drives
and surge sensitive components. When rated in accordance with
the NEC®, JLLN/JLLS fuses provide fast-acting overload and
short circuit protection for non-inductive circuits and equipment.
Applications
• Variable speed drive protection
• Compact mains switches
Features/Benefits
• Extremely current-limiting
• Compact design
• 200 kA Interrupting Rating
• JLLN Series is RoHS Compliant
AMPERE RATINGS
130 90 250 800
235 100 300 900*
340 110 350 1000
645 125 400 1100
10 50 150 450 1200
15 60 175 500
20 70 200 600
25 80 225 700
*JL L S onl y
Note: Contact the factory for RoHS compliant Class T fuses.
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/jlln
www.littelfuse.com/jlls
Recommended Fuseholders
LFT30 Series
LFT60 Series
LSCR Series for 700-800 A
Ordering Information
SERIES VOLTAGE AMPERAGE CATALOG
NUMBER
SYSTEM
NUMBER
JLLS 600 V 6JLLS006 JLLS006.T
JLLN 300 V 10 JLLN010 JLLN010.T
Specifications
Voltage Ratings: AC: 300 V (JLLN); 600 V (JLLS)
DC: 125 V (JLLN 1 – 30 A)
160 V (JLLN 35 – 60 A)
125 V (JLLN 70 – 100 A)
125 V (JLLN 110 – 1200 A)
300 V (JLLS)
Interrupting Ratings: AC: 200 kA rms symmetrical
DC: 20 kA
(JLLN 70 – 100 A)
(JLLN 110 – 1200 A)
(JLLS 1 – 1200 A)
Ampere Range: 1 – 1200 A
Approvals: AC: Standard 248-15, Class T
UL Listed (File No. E81895):
JLLN (1-1200 A)
JLLS (1-800 A)
UL Recognized (File No. E71611)
JLLS (900 – 1200 A)
CSA Certified (File No. LR29862)
JLLN/JLLS (1 – 600 A)
DC: UL Listed (File No. E81895):
JLLN (35 – 1200 A)
Littelfuse self-certified:
JLLN (1-30 A)
JLLS (1 – 1200 A)
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuse Datasheet
UL Class T
2
B
C
A
F
DF
E
A
B
C
D
G
A
C
D
Fig. 1 Fig. 2 Fig. 3
Current-Limiting Effects of JLLS (600 V) fuses
SHORT
CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR
VARIOUS FUSE RATINGS
30 A 60 A 100 A 200 A 400 A 600 A 800 A 1200 A
5,000 750 1,225 1,400 2,850 4,600 5,000 5,000 5,000
10,000 945 1,525 1,700 3,600 6,000 8,500 9,400 10,000
15,000 1,050 1,700 2,000 4,050 6,600 9,750 10,500 13,000
20,000 1,150 1,900 2,200 4,450 7, 25 0 10,500 11,000 14,750
25,000 1,300 2,050 2,400 4,800 8,000 11,500 12,500 15,500
30,000 1,375 2,150 2,450 5,000 8,250 12,000 13,750 16,500
35,000 1,400 2,250 2,600 5,100 8,500 13,000 14,000 17,000
40,000 1,425 2,400 2,800 5,200 8,700 14,000 14,750 18,000
50,000 1,600 2,450 2,900 6,000 9,500 14,500 16,000 20,000
60,000 1,650 2,625 3,100 6,250 10,000 15,500 17, 3 0 0 21,000
80,000 1,825 2,800 3,400 7,000 11,000 17,000 18,750 23,000
100,000 2,000 3,100 3,700 7,25 0 12,000 18,000 20,000 25,000
150,000 2,250 3,400 4,300 8,500 13,000 21,000 23,000 28,500
200,000 2,450 3,800 4,600 9,000 15,000 23,000 25,000 31,000
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
Current-Limiting Effects of JLLN (300 V) fuses
SHORT
CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT FOR
VARIOUS FUSE RATINGS
30 A 60 A 100 A 200 A 400 A 600 A 800 A 1200 A
5,000 700 775 1,100 1,650 3,500 4,000 5,000 5,000
10,000 900 1,000 1,400 2,100 4,400 5,100 6,750 8,250
15,000 1,000 1,100 1,600 2,400 5,000 5,900 7,750 10,000
20,000 1,100 1,250 1,800 2,700 5,500 6,500 8,750 11,000
25,000 1,230 1,300 1,950 2,900 6,000 7,000 9,500 12,000
30,000 1,300 1,475 2,050 3,100 6,400 7,500 10,000 12,500
35,000 1,330 1,575 2,150 3,300 6,750 7,7 5 0 10,500 13,500
40,000 1,430 1,600 2,300 3,500 7,000 8,000 11,000 14,000
50,000 1,500 1,750 2,400 3,700 7,500 8,750 12,000 15,000
60,000 1,700 1,900 2,700 4,000 8,000 9,500 12,500 16,000
80,000 1,850 2,100 2,800 4,400 9,000 10,500 14,000 17,500
100,000 2,000 2,250 3,150 4,800 9,750 11,500 15,000 18,500
150,000 2,300 2,600 3,600 5,500 11,000 13,000 17,500 22,000
200,000 2,600 2,800 3,900 6,000 12,000 14,500 19,500 24,000
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Note: Data Derived from Peak Let-Thru Curves
AMPERES REFER TO
FIG. NO. SERIES
DIMENSIONS IN INCHES (mm)
A B C D E F G
1 – 30 1JLLN 7⁄8 (22.2) —9⁄32 (7.1) 13⁄32 (10.3) — — —
JLLS 11⁄2 (38.1) —9⁄32 (7.1) 9⁄16 (14.3) — — —
35 – 60 1JLLN 7⁄8 (22.2) —9⁄32 (7.1) 9⁄16 (14.3) — — —
2JLLS 19⁄16 (39.7) 13⁄16 (20.6) 13⁄32 (10.3) 1 (25.4) 1⁄16 (1.6) 13⁄32 (2 7.8) —
70 – 100 3JLLN 25⁄32 (54.8) 19⁄16 (39.7) 3⁄4 (19.1) 13⁄16 (20.6) 27⁄32 (21.4) 9⁄32 (7.1) 1⁄8 (3.2)
JLLS 261⁄64 (75.0) 223⁄64 (59.9) 3⁄4 (19.1) 13⁄16 (20.6) 141⁄64 (41.7) 9⁄32 (7.1) 1⁄8 (3.2)
110 – 200 3JLLN 27⁄16 (61.9) 111⁄16 (42.9) 7⁄8 (22.2) 11⁄16 ( 27.0 ) 27⁄32 (21.4) 11⁄32 (8.7) 3⁄16 (4.8)
JLLS 31⁄4 (82.6) 21⁄2 (63.5) 7⁄8 (22.2) 11⁄16 (27.0) 121⁄32 (42.1) 11⁄32 (8.7) 3⁄16 (4.8)
225 – 400 3JLLN 23⁄4 (69.9) 127⁄32 (46.8) 1 (25.4) 15⁄16 (33.3) 53⁄64 (21.0) 13 ⁄32 (10.3) 1⁄4 (6.4)
JLLS 35⁄8 ( 92.1) 223⁄32 (69.1) 1 (25.4) 119 ⁄32 (40.5) 123⁄32 (43.7) 13⁄32 (10.3) 1⁄4 (6.4)
450 – 600 3JLLN 31⁄16 (77.8 ) 21⁄32 (51.6) 11⁄4 (31.8) 119 ⁄32 (40.5) 7⁄8 (22.2) 31⁄64 (12.3) 5⁄16 (7.9 )
JLLS 363⁄64 (101.2) 261⁄64 (75.0) 11⁄4 (31.8) 21⁄16 (52.4) 149⁄64 (44.8) 31⁄64 (12.3) 5⁄16 (7.9 )
700 – 800 3JLLN 33⁄8 (85.7) 27⁄32 (64.3) 13⁄4 (44.5) 21⁄16 (52.4) 7⁄8 (22.2) 35⁄64 (13.9) 3⁄8 (9.5)
JLLS 421⁄64 (109.9) 311⁄64 (80.6) 13⁄4 (44.5) 21⁄2 (63.5) 155⁄64 (47. 2) 35⁄64 (13.9) 3⁄8 (9.5)
900 – 1200 3JLLN 4 (101.6) 217⁄32 (64.3) 2 (50.8) 21⁄2 (63.5) 11⁄32 (26.2) 39⁄64 (15.5) 7⁄16 (11.1)
JLLS 5.27 (133.9) 3.80 (96.5) 2 (50.8) 2.63 (66.8) 2.30 (58.4) 0.67 (15.5) 0.44 (11.2)
Dimensions in inches (mm)
JLLN/JLLS CLASS T FUSES
© JUNE 2011 Littelfuse POWR-GARD Productswww.littelfuse.com
POWR-GARD® Fuse Datasheet
UL Class T
3
Peak Let-Thru Curve JLLS
