POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 1
TRADITIONAL SEMICONDUCTOR FUSES
150/250/500/600/700 VAC • Very Fast-Acting • 1 – 1200 Amperes
AMPERE
RATINGS
SERIES & VOLTAGE RATINGS
L15S
150 VAC
150 VDC (1 – 60 A)
100 VDC (70 – 100 0 A)
L25S
250 VAC
250 VDC (1 – 200 A)
200 VDC (225 – 800 A)
L50S
500 VAC
450 VDC
L60S
600 VAC
KLC‡
600 VAC
L70S
700 VAC
650 VDC
1L15S 1 L25S 1 –L60S 1 KLC 1 –
2L15S 2 L25S 2 –L60S 2 KLC 2 –
3L15S 3 L25S 3 –L60S 3 KLC 3 –
4L15S 4 L25S 4 –L60S 4 KLC 4 –
5L15S 5 L25S 5 –L60S 5 KLC 5 –
6L15S 6 L25S 6 –L60S 6 KLC 6 –
7L15S 7 – – – KLC 7 –
8L15S 8 L25S 8 –L60S 8 KLC 8 –
9L15S 9 – – – – –
10 L15S 10 L25S 10 L50S 10 L60S 10 KLC 10 L70S 10
12 L15S 12 L25S 12 L50S 12 L60S 12 KLC 12 –
15 L15S 15 L25S 15 L50S 15 L60S 15 KLC 15 L70S 15
171⁄2–––L60S 171⁄2KLC 17 1⁄2–
20 L15S 20 L25S 20 L50S 20 L60S 20 KLC 20 L70S 20
25 L15S 25 L25S 25 L50S 25 L60S 25 KLC 25 L70S 25
30 L15S 30 L25S 30 L50S 30 L60S 30 KLC 30 L70S 30
35 L15S 35 L25S 35 L50S 35 L60S 35 KLC 35 L70S 35
40 L15S 40 L25S 40 L50S 40 L60S 40 KLC 40 L70S 40
45 L15S 45 L25S 45 –L60S 45 KLC 45 –
50 L15S 50 L25S 50 L50S 50 L60S 50 KLC 50 L70S 50
60 L15S 60 L25S 60 L50S 60 L60S 60 KLC 60 L70S 60
70 L15S 70 L25S 70 L50S 70 L60S 70 KLC 70 L70S 70
80 L15S 80 L25S 80 L50S 80 L60S 80 KLC 80 L70S 80
90 L15S 90 L25S 90 L50S 90 L60S 90 KLC 90 L70S 90
100 L15S 100 L25S 100 L50S 100 L60S 100 KLC 100 L70S 100
110 – – – – KLC 110 –
125 L15S 125 L25S 125 L50S 125 L60S 125 KLC 125 L70S 125
150 L15S 150 L25S 150 L50S 150 L60S 150 KLC 150 L70S 150
175 –L25S 175 L50S 175 L60S 175 KLC 175 L70S 175
200 L15S 200 L25S 200 L50S 200 L60S 200 KLC 200 L70S 200
225 –L25S 225 L50S 225 L60S 225 KLC 225 L70S 225
250 L15S 250 L25S 250 L50S 250 L60S 250 KLC 250 L70S 250
275 –L25S 275 L50S 275 – – –
300 L15S 300 L25S 300 L50S 300 L60S 300 KLC 300 L70S 300
350 L15S 350 L25S 350 L50S 350 L60S 350 KLC 350 L70S 350
400 L15S 400 L25S 400 L50S 400 L60S 400 KLC 400 L70S 400
450 L15S 450 L25S 450 L50S 450 L60S 450 KLC 450 L70S 450
500 L15S 500 L25S 500 L50S 500 L60S 500 KLC 500 L70S 500
550 – – L50S 550 – – –
600 L15S 600 L25S 600 L50S 600 L60S 600 KLC 600 L70S 600
700 –L25S 700 L50S 700 L60S 700 KLC 700 L70S 700
800 L15S 800 L25S 800 L50S 800 L60S 800 KLC 800 L70S 800
900 – – LA50P9004 – – LA70P9004
1000 L15S 1000 –LA50P10004 – – LA70P10004
1200 – – LA50P12004 – – LA70P12004
‡ KLC series fuses are recommended for replacement use only.
Specifications
Voltage Ratings:
L15S: 150 VAC/DC (1 – 60 A)
150 VAC (70 – 1000 A)
100 VDC (70 – 1000 A)
L25S: 250 VAC/DC (1 – 200 A)
250 VAC (225 – 800 A)
200 VDC (225 – 800 A)
L50S: 500 VAC/450 VDC
L60S: 600 VAC
KLC: 600 VAC
L70S: 700 VAC/650 VDC
L25S series fuses are Littelfuse Certified
for DC ratings shown in Rating Table.
Interrupting Rating:
AC: 200 kA rms
(L15S series 100 kA)
DC: 20 kA
Ampere Range:
1 – 1200 A
See Rating Table for ratings available in
each series.
Approvals:
UL Recognized (File No. E71611)
CSA Recognized (File No. LR29862)
Recommended
Fuseholders
1LFS101/1LFS102 ............ pg. 121
LSCR001/LSCR002 .......... pg. 120
Web Resources
For additional information, visit:
www.littelfuse.com/semi
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 2
L15S Series, 150 Volts AC
AMPERE
RATING
FIG.
NO.
DIMENSIONS IN INCHES (mm)
A B C D E F G H
1 – 30 111⁄2
(38.1) —
3⁄8
(9.5)
13 ⁄32
(10.3) — — — —
31 – 60 12
(50.8) —
5⁄8
(15.9)
13 ⁄16
(20.6) — — — —
61 – 450 315⁄32
(29.4)
17⁄8
(47.6 )
23⁄16
(55.6)
221⁄32
(67.5 )
1
(25.4)
43⁄64
(17.1)
5⁄16
( 7.9 )
3⁄16
(4.8)
451 – 1000 311⁄4
(31.8)
115 ⁄16
(49.2)
29⁄16
(65.1)
31⁄2
(88.9)
11⁄2
(38.1)
1
(25.4)
13 ⁄32
(10.3)
1⁄4
(6.4)
E
H
F
GA
B
C
D
Fig, 2
A
C
D
Fig. 1
L25S Series, 250 Volts AC
AMPERE
RATING
FIG.
NO.
DIMENSIONS IN INCHES (mm)
A B C D E F G H
1 – 30 12
(50.8) —
1⁄2
(12.7)
9⁄16
(14.3) — — — —
31 – 60 215⁄8
(41.3)
21⁄4
(57.2)
21⁄2
(63.5)
33⁄16
(81.0)
13⁄16
(20.6)
23⁄32
(18.3)
11⁄32
(8.7)
1⁄8
(3.2)
61 – 200 315⁄8
(41.3)
25⁄16
(58.7)
27⁄16
(61.9)
31⁄8
(79.4)
17⁄32
(31.0)
1
(25.4)
5⁄16
( 7.9 )
3⁄16
(4.8)
201 – 700 3119 ⁄32
(40.5)
29⁄32
( 5 7.9 )
229⁄32
(73.8)
327⁄32
(97.6)
11⁄2
(38.1)
1
(25.4)
13⁄32
(10.3)
1⁄4
(6.4)
701 – 800 3119 ⁄32
(40.5)
29⁄32
( 5 7.9 )
229⁄32
(73.8)
327⁄32
(97.6)
2
(50.8)
11⁄2
(38.1)
13⁄32
(10.3)
1⁄4
(6.4)
L50S Series, 500 Volts AC / 450 Volts DC
AMPERE
RATING
FIG.
NO.
DIMENSIONS IN INCHES (mm)
A B C D E F G H
10 – 30 12
(50.8) —1⁄2
(12.7)
9⁄16
(14.3) — — — —
31 – 60 215⁄8
(41.3)
21⁄4
(57.2)
21⁄2
(63.5)
33⁄16
(81.0)
13⁄16
(20.6)
23⁄32
(18.3)
11⁄32
(8.7)
1⁄8
(3.2)
61 – 100 321⁄8
(54.0)
211⁄16
(68.3)
3
(76.2)
35⁄8
(92.1)
1
(25.4)
3⁄4
(19.1)
11⁄32
(8.7)
1⁄8
(3.2)
101 – 200 321⁄8
(54.0)
213⁄16
(71.4)
215 ⁄16
(74.6)
35⁄8
(92.1)
17⁄32
(31.0)
1
(25.4)
5⁄16
( 7.9 )
3⁄16
(4.8)
201 – 400 323⁄32
(53.2)
225⁄32
(70.6)
313⁄32
(86.5)
411⁄32
(110.3)
11⁄2
(38.1)
1
(25.4)
13⁄32
(10.3)
1⁄4
(6.4)
401 – 600 327⁄32
(56.4)
229⁄32
(73.8)
317⁄32
(89.7)
415 ⁄32
(113.5)
2
(50.8)
11⁄2
(38.1)
13⁄32
(10.3)
1⁄4
(6.4)
601 – 800 327⁄32
(56.4)
49⁄32
(108.7)
45⁄8
(117.5 )
615 ⁄32
(164.3)
21⁄2
(63.5)
2
(50.8)
17⁄32
(13.5)
3⁄8
(9.5)
TRADITIONAL SEMICONDUCTOR FUSES
150/250/500/600/700 VAC • Very Fast-Acting • 1-1000 Amperes
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 3
F
GA
B
CE
J
H
Fig. 4
AMPERE
RATING
FIG.
NO.
DIMENSIONS IN INCHES (mm)
A B C D E F G H J
10 – 30 12
(50.8) —
1⁄2
(12.7)
9⁄16
(14.3) — — — — —
31 – 60 327⁄8
(73.0)
37⁄16
(87.3)
325⁄32
(96.0)
43⁄8
(111.1)
1
(25.4)
43⁄64
(17.1)
11 ⁄32
(8.7)
1⁄8
(3.2) —
61 – 100 327⁄8
(73.0)
39⁄16
(90.5)
311⁄16
(93.7)
43⁄8
(111.1)
17⁄32
(31.0)
29⁄32
(22.9)
5⁄16
( 7.9 )
3⁄16
(4.8) —
101 – 200 3227⁄32
(72.2)
317⁄32
(89.7)
45⁄32
(105.6)
53⁄32
(129.4)
11⁄2
(38.1)
1
(25.4)
13 ⁄32
(10.3)
1⁄4
(6.4) —
201 – 400 3227⁄32
(72.2)
317⁄32
(89.7)
45⁄32
(105.6)
53⁄32
(129.4)
2
(50.8)
11⁄2
(38.1)
13 ⁄32
(10.3)
1⁄4
(6.4) —
401 – 600 3227⁄32
(72.2)
429⁄32
(124.6)
51⁄4
(133.4)
73⁄32
(180.2)
21⁄2
(63.5)
2
(50.8)
17⁄32
(13.5)
3⁄8
(9.5) —
601 – 800 435⁄16
(8 4.1)
55⁄16
(134.9)
613⁄16
(173.0) —27⁄8
(73.0)
2
(50.8)
5⁄8
(15.9)
3⁄8
(9.5)
5⁄16
( 7.9 )
AMPERE
RATING
FIG.
NO.
DIMENSIONS IN INCHES (mm)
A B C D E F G H
1 – 30 217⁄8
(47.6 )
21⁄2
(63.5) —27⁄8
(73.0)
9⁄16
(14.3)
13 ⁄32
(10.3)
1⁄4
(6.4)
3⁄64
(1.2)
31 – 60 223⁄4
(69.9)
33⁄8
(85.7)
35⁄8
(92.1)
45⁄16
(109.5)
13⁄16
(20.6)
23⁄32
(18.3)
11 ⁄32
(8.7)
1⁄8
(3.2)
61 – 100 327⁄8
(73.0)
321⁄32
(92.9)
41⁄16
(103.2)
5
(12 7.0 )
1
(25.4)
3⁄4
(19.1)
13 ⁄32
(10.3)
1⁄8
(3.2)
101 – 200 3227⁄32
(72.2)
317⁄32
(89.7)
43⁄8
(111.1)
53⁄32
(129.4)
11⁄2
(38.1)
1
(25.4)
13 ⁄32
(10.3)
1⁄4
(6.4)
201 – 400 3227⁄32
(72.2)
421⁄32
(118.3)
427⁄32
(123.0)
61⁄4
(158.8)
2
(50.8)
15⁄8
(41.3)
9⁄16
(14.3)
1⁄4
(6.4)
401 – 800 3227⁄32
(72.2)
421⁄32
(118.3)
511 ⁄32
(135.7)
61⁄4
(158.8)
21⁄2
(63.5)
2
(50.8)
9⁄16
(14.3)
3⁄8
(9.5)
AMPERE
RATING
FIG.
NO.
DIMENSIONS IN INCHES (mm)
A B C D E F G H
1 – 30 15
(12 7.0 ) —
5⁄8
(15.9)
13⁄16
(20.6) — — — —
31 – 60 2225⁄32
(70.6)
37⁄16
(87.3)
311⁄16
(93.7)
43⁄8
(111.1)
13⁄16
(20.6)
23⁄32
(18.3)
11⁄32
(8.7)
1⁄8
(3.2)
61 – 100 2229⁄32
(73.8)
317⁄32
(89.7)
325⁄32
(96.0)
415 ⁄32
(113.5)
11⁄16
( 27.0 )
23⁄32
(18.3)
11⁄32
(8.7)
1⁄8
(3.2)
101 – 200 2229⁄32
(73.8)
39⁄16
(90.5)
33⁄4
(95.3)
413⁄32
(111.9)
15⁄16
(33.3)
1
(25.4)
5⁄16
( 7.9 )
3⁄16
(4.8)
201 – 400 2229⁄32
(73.8)
331⁄32
(100.8)
45⁄32
(105.6)
51⁄8
(130.2)
137⁄64
(40.1)
1
(25.4)
13⁄32
(10.3)
1⁄4
(6.4)
401 – 600 227⁄8
(73.0)
331⁄32
(100.8)
49⁄64
(105.2)
51⁄8
(130.2)
21⁄16
(52.8)
11⁄2
(38.1)
13⁄32
(10.3)
1⁄4
(6.4)
601 – 800 231⁄32
( 77.0 )
55⁄32
(133.4)
511⁄32
(135.7)
71⁄4
(184.2)
21⁄2
(63.5)
2
(50.8)
17⁄32
(13.5)
3⁄8
(9.5)
A
B
C
D
F
G
E
H
Fig. 3
NORTH AMERICAN SEMICONDUCTOR FUSES
150/250/500/600/700 VAC • Very Fast-Acting • 1-1000 Amperes
KLC Series, 600 Volts AC
L70S Series, 700 Volts AC/600 Volts DC
L60S Series, 600 Volts AC
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 4
Specifications
Voltage Rating: AC: 150 V
DC: 150 V
Interrupting Rating: 100 kA
Ampere Range: 1 – 6000 A
Approvals: UL Recognized
ALTERNATE DIMENSION SEMICONDUCTOR FUSES
150 VAC • Very Fast-Acting • 1-6000 Amperes
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2t @150
VAC (A2S x 103)
WATTS LOSS
@ RATED
CURRENT (W)
1LA15QS1-2 20.0002 0.68
2LA15QS2-2 20.001 1.3
3LA15QS3-2 20.003 1.7
4LA15QS4-2 20.007 2.1
5LA15QS5-2 20.012 2.8
6LA15QS6-2 20.022 3.1
7LA15QS7-2 20.011 2.2
8LA15QS8-2 20.015 2.5
10 LA15QS10-2 20.019 2.6
12 LA15QS12-2 20.030 3
15 LA15QS15-2 20.042 3
20 LA15QS20-2 20.072 4
25 LA15QS25-2 20.14 5.2
30 LA15QS30-2 20.25 5.6
35 LA15QS35-1 10.21 9
40 LA15QS40-1 10.28 10
40 LA15QS40-4TI 4TI 0.39 3.1
45 LA15QS45-1 10.34 12
50 LA15QS50-1 10.47 13
50 LA15QS50-4 40.64 4
55 LA15QS55-1 1Contact Factory Contact Factory
60 LA15QS60-1 10.94 14
70 LA15QS70-4 4 2 5.6
70 LA15QS70-4TI 4TI 25.6
80 LA15QS80-4 42.5 8
80 LA15QS80-4TI 4TI 2.5 8
90 LA15QS90-4 43.1 9
100 LA15QS100-4 43.6 10
100 LA15QS100-4TI 4TI 3.6 10
130 LA15QS130-4 45.3 14
130 LA15QS130-4TI 4TI 5.3 14
150 LA15QS150-4 46.8 16
150 LA15QS150-4IL 4IL 6.8 16
150 LA15QS150-4TI 4TI 6.8 16
200 LA15QS200-4 4 9 22
200 LA15QS200-4IL 4IL 922
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2t @150
VAC (A2S x 103)
WATTS LOSS @
RATED CURRENT
(W)
250 LA15QS250-4 415 22
250 LA15QS250-4TI 4TI 15 27
300 LA15QS300-4 422 33
300 LA15QS300-4IL 4IL 22 33
300 LA15QS300-4TL 4TI 22 33
350 LA15QS350-4 432 40
350 LA15QS350-4TI 4TI 32 40
400 LA15QS400-4 440 45
400 LA15QS400-4IL 4IL 40 45
400 LA15QS400-4TI 4TI 40 45
450 LA15QS450-4 450 50
450 LA15QS450-4IL 4IL 50 50
500 LA15QS500-4 490 30
500 LA15QS500-4IL 4IL 90 30
600 LA15QS600-4 4130 35
600 LA15QS600-4IL 4IL 130 35
800 LA15QS800-4 4290 57
1000 LA15QS1000-4 4520 75
1000 LA15QS1000-4IL 4IL 520 75
1000 LA15QS1000-4TI 4TI 520 75
1000 LA15QS1000-128 128 540 88
1000 LA15QS1000-128IL 128IL 540 88
1200 LA15QS1200-128 128 680 100
1200 LA15QS1200-128IL 128IL 680 100
1500 LA15QS1500-128 128 1200 130
1500 LA15QS1500-128IL 128IL 1200 130
2000 LA15QS2000-128 128 1900 165
2000 LA15QS2000-128IL 128IL 1900 165
2500 LA15QS2500-128 128 3200 195
2500 LA15QS2500-128IL 128IL 3200 195
3000 LA15QS3000-128 128 4800 240
3000 LA15QS3000-128IL 128IL 4800 240
3500 L A15QS3500-128 128 6500 260
4000 LA15QS4000-128 128 8500 270
4000 LA15QS4000-128IL 128IL 8500 270
5000 LA15QS5000-128 128 Contact Factory Contact Factory
6000 LA15QS6000-128 128 Contact Factory Contact Factory
AMPERE
RATINGS
MOUNTING
TYPE
FIGURE
NO.
DIMENSIONS IN INCHES (mm IN PARENTHESES) TAP
A B C D E F G H
1 – 30 2 1 1.5 0 (38.1) 0.41 (10.4) –––––– –
35 – 60 1 1 2.00 (50.8) 0.81 (20.6) –––––– –
40 – 450 4, 4TI*, 4IL* 22.66 (67.6) 1.00 (25.4) 1.16 (29.5 ) 2.19 (55.6 ) 1.91 (48.5) 0.31 (7.9) 0.88 (22.4) 0.19 (4.8 ) –
500 – 1000 4, 4TI*, 4IL* 23.50 (88.9) 1.50 (38.1) 1.25 (31.8) 2.56 (65.0) 1.94 (49.3) 0.41 (10.4) 1.00 (25.4) 0.25 (6.4) –
750 – 2000 128, 128IL* 31.88 (47. 9 ) 2.00 (50.8) 1.63 (41.4) 1.75 (44.5) 1.00 (25.4) –––3⁄8-24-1⁄2 deep
2500 – 3000 128, 128IL* 31.88 (47.9) 3.00 (76.2) 1.63 (41.4) 2.50 (63.5) 1.50 ( 38.1) –––1⁄2-20-1⁄2 deep
3500 – 4000 128, 128IL* 41.88 (47.9 ) 3.50 (88.9) 1.63 (41.4) 3.00 (76.2) 1.06 (27.0) 1.06 (27.0) – – 1⁄2-20-1⁄2 deep
5000 – 6000 128 52.38 (60.5) 5.75 (146) 1.88 (47.7) 5.00 (127) 1.50 ( 38.1) 1.50 (38.1) – – 1⁄2-20-1⁄2 deep
*Optional Trigger Actuator (IL). Optional Trigger Indicator (TI) see web for dimensions.
Figure 1 Figure 2
Figure 3 Figure 4 Figure 5
Dimensions for reference only.
Dimensions
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/la15qs
LA15QS Series
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 5
ALTERNATE DIMENSION SEMICONDUCTOR FUSES
300 VAC • Very Fast-Acting • 35-4500 Amperes
Specifications
Voltage Rating: AC: 300 V
DC: 300 V
Interrupting Rating: 2 0 0 k A
Ampere Range: 35 – 4500 A
Approvals: UL Recognized
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2T
@300 VAC
(A2S X 103)
WATTS LOSS
@ RATED
CURRENT
(W)
35 LA30QS35-4 40.9 6.4
40 LA30QS40-4 41.2 7
50 LA30QS50-4 4 2 9.9
60 LA30QS60-4 42.7 11.6
70 LA30QS70-4 41.6 11
80 LA30QS80-4 42.6 11
90 LA30QS90-4 43.2 13
100 LA30QS100-4 44.1 13
100 LA30QS100-4TI 4TI 4.1 13
125 LA30QS125-4 46.3 16
130 LA30QS130-4 46.3 16
150 LA30QS150-4 49.3 19
150 LA30QS150-4TI 4TI 9.3 19
175 LA30QS175-4 410 27
200 LA30QS200-4 415 30
200 LA30QS200-4TI 4TI 15 30
225 LA30QS225-4 422 33
250 LA30QS250-4 425 41
250 LA30QS250-4TI 4TI 25 41
300 LA30QS300-4 437 47
300 LA30QS300-4TI 4TI 37 47
350 LA30QS350-4 462 49
400 LA30QS400-4 483 56
400 LA30QS400-4IL 4IL 83 56
400 LA30QS400-4TI 4TI 83 56
450 LA30QS450-4 4130 53
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2T
@300 VAC
(A2S X 103)
WATTS LOSS
@ RATED
CURRENT (W)
500 LA30QS500-4 4160 59
550 LA30QS550-4 4190 65
600 LA30QS600-4 4230 69
600 LA30QS600-4TI 4TI 230 69
600 LA30QS600-4IL 4IL 230 69
700 LA30QS700-4 4260 90
700 LA30QS700-128 128 260 73
800 LA30QS800-4 4330 108
800 LA30QS800-4IL 4IL 330 108
800 LA30QS800-128 128 330 84
1000 LA30QS1000-128 128 460 105
1000 LA30QS1000-128IL 128IL 460 105
1200 LA30QS1200-128 128 880 110
1500 LA30QS1500-128 128 1400 140
1500 LA30QS1500-128IL 128IL 1400 140
1600 LA30QS1600-128 128 1690 150
2000 LA30QS2000-128 128 2600 190
2000 LA30QS2000-128IL 128IL 2600 190
2500 LA30QS2500-128 128 4000 230
2500 LA30QS2500-128IL 128IL 4000 230
3000 LA30QS3000-128 128 4700 340
3500 LA30QS3500-128 128 6500 380
3500 LA30QS3500-128IL 128IL 6500 380
4000 LA30QS4000-128 128 8600 450
4500 LA30QS4500-128 128 11000 500
Figure 1 Figure 2
Figure 3 Figure 4
Dimensions for reference only.
AMPERE
RATING
MOUNTING
TYPE
FIGURE
NO.
DIMENSIONS IN INCHES (mm IN PARENTHESES) TAP
A B C D E F G H
35 – 60 4 1 3.19 (81.0) 0.81 (20.6) 1.63 (41.4) 2.50 (63.5) 2.25 (5 7.5 ) 0.34 (8.6) 0.72 (18.3) 0.13 (3.3) –
70 – 200 4 2 3.13 (79.5) 1.22 (31.0) 1.63 (41.4) 2.44 (62.0) 2.31 (58.7) 0.31 (7.9) 1.00 (25.4) 0.19 (4.8 ) –
225 – 700 4, 4IL* 23.84 (97.5) 1.50 (38.1) 1.59 (40.1) 2.91 (73.9) 2.28 (57.9 ) 0.41 (10.4) 1.00 (25.4) 0.25 (6.4) –
700 – 1200 128 32.59 (65.8) 3.00 (76.2) 2.34 (59.4) 2.50 (63.5) 1.50 (38.1) –––3⁄8-24-1⁄2 deep
1500 – 2500 128, 128IL* 42.59 (65.8) 3.50 (88.9) 2.34 (59.4) 3.00 (76.2) 1.50 ( 38.1) 1.50 (38.1) – – 3⁄8-24-1⁄2 deep
3000 – 4500 128, 128IL* 42.59 (65.8) 4.50 (114) 2.34 (59.4) 3.75 (95.3) 1.50 (38.1) 1.50 ( 38.1) – – 1⁄2-20-1⁄2 deep
*Optional Trigger Actuator (IL). Optional Trigger Indicator (TI) see web for dimensions.
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/la30qs
Dimensions
LA30QS Series
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 6
ALTERNATE DIMENSION SEMICONDUCTOR FUSES
500 VAC • Very Fast-Acting • 35-1200 Amperes
Specifications
Voltage Rating: AC: 500 V
DC: 500 V
Interrupting Rating: AC: 200 kA
DC: 100 kA
Ampere Range: 35 – 1200 A
Approvals: UL Recognized
CSA Certified
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2T @500
VAC
(A2S X 103)
WATTS LOSS
@ RATED
CURRENT (W)
35 LA50QS35-4 40.56 6
40 LA50QS40-4 40.69 7
50 LA50QS50-4 41.1 8
60 LA50QS60-4 41.8 10
70 LA50QS70-4 41.9 12
80 LA50QS80-4 42.6 14
90 LA50QS90-4 43.6 15
100 LA50QS100-4 44.4 17
125 LA50QS125-4 45.6 21
150 LA50QS150-4 4 9 25
175 LA50QS175-4 415 29
200 LA50QS200-4 420 33
225 LA50QS225-4 425 37
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2T @500
VAC
(A2S X 103)
WATTS LOSS
@ RATED
CURRENT (W)
250 LA50QS250-4 429 41
300 LA50QS300-4 455 49
350 LA50QS350-4 488 57
400 LA50QS400-4 498 65
450 LA50QS450-4 4130 69
500 LA50QS500-4 4160 77
600 LA50QS600-4 4220 92
700 LA50QS700-4 4270 110
800 LA50QS800-4 4360 130
900 LA50QS900-4 4500 140
1000 LA50QS1000-4 4560 160
1200 LA50QS1200-4 4930 175
Dimensions for reference only.
AMPERE
RATING
MOUNTING
TYPE
DIMENSIONS IN INCHES (mm)
A B C D E F G H
35 – 100 43.63
(92.2)
1.00
(25.4)
2.13
(5 4.1)
2.94
(74.7)
2.75
(69.9)
0.31
( 7.9 )
0.75
(19.1)
0.13
(3.3)
125 – 200 43.63
(92.2)
1.22
(31.0)
2.13
(5 4.1)
2.94
(74.7)
2.81
(71.4)
0.31
( 7.9 )
1.00
(25.4)
0.19
(4.8)
225 – 400 44.34
(110)
1.50
(38.1)
2.09
(53.1)
3.41
(86.6)
2.78
(70.6)
0.41
(10.4)
1.00
(25.4)
0.25
(6.4)
450 – 600 44.47
(114)
2.00
(50.8)
2.22
(56.4)
3.53
(89.7)
2.91
(73.9)
0.41
(10.4)
1.50
(38.1)
0.25
(6.4)
700 – 800 46.47
(164.3)
2.50
(63.5)
2.22
(56.4)
5.00
(12 7.0 )
3.44
(87.3)
0.53
(13.5)
1.50
(38.1)
0.25
(6.4)
900 – 1200 46.97
(17 7.0 )
3.00
(76.2)
3.22
(81.8)
5.47
(138.9)
4.47
(113.5)
0.63
(15.9)
2.38
(60.3)
0.44
(11.1)
Contact Littelfuse for characteristic curves.
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/la50qs
Dimensions
LA50QS Series
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 7
ALTERNATE DIMENSION SEMICONDUCTOR FUSES
600 VAC/DC • Very Fast-Acting • 5-40 Amperes
690 VAC/700 VDC • Very Fast-Acting • 10-100 Amperes
Specifications
Voltage Rating: AC: 600 V
DC: 600 V
Interrupting Rating: AC: 200 kA
DC: 100 kA
Ampere Range: 5 – 40 A
Approvals: UL Recognized
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2T
@600 VAC
(A2S x 103)
WATTS LOSS
@ RATED
CURRENT (W)
5LA60Q5-2 260 0.7
8LA60Q8-2 270 1.1
10 LA60Q10-2 2110 1.6
12 LA60Q12-2 2150 2
15 LA60Q15-2 2180 3
20 LA60Q20-2 2330 4.4
25 LA60Q25-2 2440 5.5
30 LA60Q30-2 2860 5.6
35 LA60Q35-2 21300 6.4
40 LA60Q40-2 21800 7
1 ½
13/32
Description
Littelfuse LA60Q semiconductor protection fuses feature
a 600 volt AC/DC rating in a compact size (1 1⁄2” x 13 ⁄32”).
LA60Q also has the lowest I2t of all similar fuses and
excellent cycling ability. Applications include inverters and
small equipment requiring extremely fast response to
faults, without the need to carry sustained heavy overloads.
Dimensions in inches
Contact Littelfuse for characteristic curves.
Description
Littelfuse LA70QS semiconductor fuses were developed
to provide improved performance required by today’s new
equipment. The LA70QS features lower I2t, improved cycling,
and lower watts loss. It is the best choice for the protection
of dynamic solid-state equipment.
Dimensions in inches (mm)
Please see website for dimensions:
www.littelfuse.com/la70qs
Specifications
Voltage Rating: AC: 690 V
DC: 700 V
Interrupting Rating: AC: 200 kA
DC: 100 kA
Ampere Range: 10 – 100 A
Approvals: UL Recognized
CSA Certified
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/la70qs
Recommended Fuseholders
CYH series for non-striker fuses LA70QS(amp)22F .. pg. 173
CYH1451 series for LA70QS(amp)14F ...................... pg. 173
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/la60qs
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
(NO STRIKER)
LITTELFUSE
CATALOG
NUMBER
(WITH STRIKER)
BODY
SIZE
MAXIMUM
CLEARING I2T
@700 VAC
(A2S X 103)
WATTS LOSS
@ RATED
CURRENT (W)
10 LA70QS10-14F LA70QS10-14FI 14 x 51 0.04 3.5
12 LA70QS12-14F LA70QS12-14FI 14 x 51 0.06 4.4
16 LA70QS16-14F LA70QS16-14FI 14 x 51 0.10 4.8
20 LA70QS20-14F LA70QS20-14FI 14 x 51 0.16 5.2
25 LA70QS25-14F LA70QS25-14FI 14 x 51 0.27 5.8
32 LA70QS32-14F LA70QS32-14FI 14 x 51 1.50 7.0
40 LA70QS40-14F LA70QS40-14FI 14 x 51 0.70 10.7
50 LA70QS50-14F LA70QS50-14FI 14 x 51 1.50 11.6
20 LA70QS20-22F LA70QS20-22FI 22 x 58 0.076 8.0
25 LA70QS25-22F LA70QS25-22FI 22 x 58 0.125 10.0
32 LA70QS32-22F LA70QS32-22FI 22 x 58 0.27 11.0
40 LA70QS40-22F LA70QS40-22FI 22 x 58 0.48 13.0
50 LA70QS50-22F LA70QS50-22FI 22 x 58 0.80 14.9
63 LA70QS63-22F LA70QS63-22FI 22 x 58 1.85 16.0
80 LA70QS80-22F LA70QS80-22FI 22 x 58 3.80 17.8
100 LA70QS100-22F LA70QS100-22FI 22 x 58 8.00 19.0
LA60Q Series Semiconductor Fuses
LA70QS Series French Cylindrical Fuses
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 8
ALTERNATE DIMENSION SEMICONDUCTOR FUSES
700 VAC/VDC • Very Fast-Acting • 35-800 Amperes
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2T @700
VAC
(A2S X 103)
WATTS LOSS
@ RATED
CURRENT (W)
200 LA70QS200-4 419 41
200 LA70QS200-4K 419 41
250 LA70QS250-4 442 42
300 LA70QS300-4 455 53
350 LA70QS350-4 472 64
400 LA70QS400-4 499 75
450 LA70QS450-4 4125 75
450 LA70QS450-4K 4K 125 75
500 LA70QS500-4 4150 92
500 LA70QS500-4K 4K 160 92
600 LA70QS600-4 4222 116
600 LA70QS600-4K 4K 222 116
700 LA70QS700-4 4332 125
800 LA70QS800-4 4433 143
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2T @700
VAC
(A2S X 103)
WATTS LOSS
@ RATED
CURRENT (W)
35 LA70QS35-4 40.47 6.2
40 LA70QS40-4 40.58 7.5
50 LA70QS50-4 40.88 9.8
60 LA70QS60-4 41.2 12
70 LA70QS70-4 41.8 15
80 LA70QS80-4 42.3 16
90 LA70QS90-4 4 3 20
100 LA70QS100-4 43.6 24
125 LA70QS125-4 46.9 22
125 LA70QS125-4K 4K 6.9 22
150 LA70QS150-4 411 28
150 LA70QS150-4K 4K 11 29
175 LA70QS175-4 414 35
175 LA70QS175-4K 4K 14 35
Dimensions for reference only.
AMPERES MOUNTING
TYPE
DIMENSIONS IN INCHES (mm)
A B C D E F G H
35 – 100 44.38
(111)
1.00
(25.4)
2.88
(73)
3.69
(93.6)
3.50
(88.9)
0.31
( 7.9 )
0.75
(19.0)
0.13
(3.2)
125 – 200 44.38
(111)
1.22
(31.0)
2.88
(73)
3.69
(93.6)
3.56
(90.5)
0.31
( 7.9 )
1.00
(25.4)
0.19
(4.8)
125 – 200 4K 5.09
(129)
1.22
(31.0)
2.88
(73)
4.19
(106)
3.50
(88)
0.41
(10.3)
1.00
(25.4)
0.19
(4.8)
225 – 400 45.09
(129)
1.50
(38.1)
2.84
(72.2)
4.16
(106)
3.53
(89.7)
0.40
(10.3)
1.50
(38.1)
0.25
(6.4)
450 – 600 45.09
(129)
2.00
(50.8)
2.84
(72.2)
4.16
(106)
3.53
(89.7)
0.41
(10.3)
1.50
(38.1)
0.25
(6.4)
450 – 600 4K 7.09
(180)
2.00
(50.8)
2.84
(72.2)
6.16
(156)
3.53
(89.7)
0.53
(13.5)
1.50
(38.1)
0.25
(6.4)
700 – 800 47.09
(180)
2.50
(63.5)
2.84
(72.2)
5.28
(134)
4.91
(125)
0.53
(13.5)
2.00
(50.8)
0.38
(9.5)
Contact Littelfuse for characteristic curves.
Specifications
Voltage Rating: AC: 700 V
DC: 700 V
Interrupting Rating: AC: 200 kA
DC: 100 kA
Ampere Range: 35 – 800 A
Approvals: UL Recognized
CSA Certified
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/la70qs
Dimensions in inches (mm)
LA70QS Series Semiconductor Fuses
POWR-GARD® Fuse Datasheet
Special Purpose
©June 2011 Littelfusewww.littelfuse.com 9
ALTERNATE DIMENSION SEMICONDUCTOR FUSES
1000 VAC • Very Fast-Acting • 15 – 1000 Amperes
Specifications
Voltage Rating: AC: 1000 V
DC: 750 V
Interrupting Rating: 100 kA
Ampere Range: 15 – 1000 A
Approvals: UL Recognized
AMPERE
RATING
LITTELFUSE
CATALOG
NUMBER
MOUNTING
TYPE
MAXIMUM
CLEARING I2T @1000
VAC
(A2S X 103)
WATTS LOSS
@ RATED
CURRENT (W)
15 LA100P15-1 10.6 3.4
20 LA100P20-1 10.8 5.9
25 LA100P25-1 11,3 9
30 LA100P30-1 11.5 12.8
35 LA100P35-4 42.2 7.3
40 LA100P40-4 42.9 8.3
50 LA100P50-4 44.5 11
60 LA100P60-4 46.5 13
80 LA100P80-4 412 14
100 LA100P100-4 418 18
125 LA100P125-4 428 23
150 LA100P150-4 441 28
200 LA100P200-4 472 36
225 LA100P225-4 491 40
250 LA100P250-4 4110 46
300 LA100P300-4 4160 55
350 LA100P350-4 4220 65
400 LA100P400-4 4290 70
500 LA100P500-4 4450 90
600 LA100P600-4 4650 110
650 LA100P650-4 4780 120
700 LA100P700-4 4880 125
800 LA100P800-4 41200 140
1000 LA100P1000-4 41900 190
Dimensions for reference only.
AMPERES MOUNTING
TYPE
FIGURE
NO.
DIMENSIONS IN INCHES (mm)
A B C D E F G H J
15 – 30 1 1 2.53
(66.8)
0.56
(14.2) –––––––
35 – 60 4 2 5.00
(127)
1.00
(25.4)
3.50
(88.9)
4.31
(109)
4.19
(106)
0.31
( 7.9 )
0.75
(19.1)
0.13
(3.3) –
65 – 100 4 2 5.00
(127)
1.22
(31)
3.50
(88.9)
4.31
(109)
4.19
(106)
0.31
( 7.9 )
1.00
(25.4)
0.19
(4.8) –
125 – 200 4 2 5.72
(145)
1.50
(38.1)
3.47
(88.1)
4.78
(121)
4.16
(106)
0.41
(10.4)
1.00
(25.4)
0.25
(6.4) –
225 – 400 4 2 5.72
(145)
2.00
(50.8)
3.47
(88.1)
4.78
(121)
4.16
(106)
0.41
(10.4)
1.50
(25.4)
0.25
(6.4) –
500 – 600 4 2 7.72
(196)
2.50
(63.5)
3.47
(88.1)
5.88
(149)
5.56
(147)
0.53
(13.5)
2.00
(50.8)
0.38
(9.7) –
650 – 800 4 3 7.4 4
(189)
2.88
(73.2)
3.94
(100)
5.94
(151) –0.63
(16)
2.00
(50.8)
0.38
(9.7)
0.31
( 7.9 )
1000 4 4 8.22
(209)
3.50
(88.9)
4.47
(114)
6.59
(167)
5.84
(148)
0.63
(16)
2.75
(69.9)
0.50
(12.7)
1.38
(35.1)
Contact Littelfuse for characteristic curves.
Figure 1
Figure 3
Figure 2
Figure 4
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/la100p
Dimensions in inches (mm)
