Littelfuse KLC User Manual

POWR-GARD® Fuse Datasheet

TRADITIONAL SEMICONDUCTOR FUSES

150/250/500/600/700 VAC • Very Fast-Acting • 1-1200 A

Ordering Information

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 k A 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: E71611)
CSA Recognized (File: LR29862)

Recommended Fuse Holders

1LFS101/1LFS102
LSCR001/LSCR002

Web Resources

For additional information, visit:

littelfuse.com/semi

AMPERE

RAT INGS

1 L15S001 L25S001 – L60S001 KLC001 –
2 L15S0 02 L25S002 – L60S002 KLC002 –
3 L15S003 L25S003 – L60S003 KLC003 –
4 L15S0 04 L25S004 – L60S004 KLC004 –
5 L15S005 L25S005 – L60S005 KLC005 –
6 L15S006 L25S006 – L60S006 KLC006 –
7 L15S0 07 – – – KLC007 –
8 L15S0 08 L25S008 – L60S008 KLC008 –

9 L15S0 09 – – – – –
10 L15 S010 L25S 010 L50S010 L60S010 KLC010 L70S010
12 L15 S012 L 25S012 L50S012 L60S012 KLC 012 –
15 L15 S015 L25S 015 L50S015 L60S015 KLC 015 L70S015

1

2

17

⁄
20 L15S020 L25S020 L50S020 L60S020 KLC020 L70S020
25 L15S02 5 L25S025 L50S025 L60S025 KLC025 L70S025
30 L15 S03 0 L25S030 L50S030 L60S030 KLC030 L70S030
35 L15S 035 L25S035 L50S035 L60S035 KLC035 L70S035
40 L15 S04 0 L25S040 L50S040 L60S040 KLC040 L70S040
45 L15 S04 5 L25S045 – L60S045 KLC045 –
50 L15S050 L25S050 L50S050 L60S050 KLC050 L70S050
60 L15S060 L25S060 L50S060 L60S060 KLC060 L70S060
70 L15S070 L25S070 L50S070 L60S070 KLC070 L70S070
80 L15S080 L25S080 L50S080 L60S080 KLC080 L70S080
90 L15 S09 0 L25S090 L50S090 L60S090 KLC090 L70S090

100 L15S 100 L 25 S100 L50S100 L60S100 KLC100 L70S100
110 – – – – K LC110 –
125 L15S125 L25S125 L5 0S125 L60S125 K LC125 L 70 S125
150 L15S150 L25 S15 0 L50S150 L60S150 K LC 150 L70S150
175 – L25 S175 L50 S175 L6 0S175 KLC175 L70S175
200 L15S 200 L25S200 L50S200 L60S200 KLC200 L70S200
225 – L25S225 L50S225 L60S225 KLC225 L70S225
250 L15S25 0 L25S250 L50S250 L60S250 KLC250 L70S250
275 – L25S275 L50S275 – – –
300 L15S300 L25S300 L50S300 L60S300 KLC300 L70S300
350 L15S350 L25S350 L50S350 L60S350 KLC350 L70S350
400 L15 S400 L25S400 L50S400 L60S400 KLC400 L70S400
450 L15 S45 0 L25S450 L50S450 L60S450 KLC450 L70S450
500 L15S500 L25S500 L50S500 L60S500 KLC500 L70S500
550 – – L50S550 – – –
600 L15S600 L25S600 L50S600 L60S600 KLC600 L70S600
700 – L25S700 L50S700 L60S700 KLC700 L70S700
800 L15 S80 0 L25S800 L50S800 L60S800 KLC800 L70S800

900 – – LA50P9004 – – LA70P9004
1000 L15S1000 – LA50P10004 – – LA70P10004
1200 – – LA50P12004 – – LA7 0P1200 4

‡

KLC series fuses are recommended for replacement use only.

L15S L25S L50S L60S KLC

– – – L6 0S17. 5 K LC17 .5 –

SERIES ORDERING NUMBER

‡

L70S

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Rev: 4-E-012714

POWR-GARD® Fuse Datasheet

TRADITIONAL SEMICONDUCTOR FUSES

Dimensions

AMPERE

RAT ING

FIG.
NO.

A B C D E F G H

DIMENSIONS INCHES (mm)

L15S Series, 150 VAC

1 – 30 1 11⁄2 (3 8 .1) —

31 – 60 1 2 (50.8) —

61 – 450 3 1

451 – 1000 3 1

5

⁄32 (29.4) 17⁄8 (4 7. 6) 23⁄16 (55.6) 221⁄32 (67.5) 1 (25.4)43⁄64 (17.1)5⁄16 (7.9 )3⁄16 (4.8)

1

⁄4 (31.8) 115⁄16 (49.2) 29⁄16 (6 5.1) 31⁄2 (88.9) 11⁄2 (3 8 .1) 1 (25.4)13⁄32 (10.3)1⁄4 (6.4)

3

⁄8 (9.5)13⁄32 (10.3) — — — —

5

⁄8 (15.9)13⁄16 (20.6) — — — —

L25S Series, 250 VAC

1 – 30 1 2 (50.8) —

31 – 60 2 1

61 – 200 3 1
201 – 700 3 1
701 – 800 3 1

5

⁄8 (41.3) 21⁄4 (5 7.2) 21⁄2 (63.5) 33⁄16 (81.0)13⁄16 (20.6)23⁄32 (18.3)11⁄32 (8.7)1⁄8 (3.2)

5

⁄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)

19

⁄32 (40.5) 29⁄32 (5 7.9) 229⁄32 (73.8) 327⁄32 (97.6) 11⁄2 (3 8 .1) 1 (25.4)13⁄32 (10.3)1⁄4 (6.4)

19

⁄32 (40.5) 29⁄32 (5 7.9) 229⁄32 (73.8) 327⁄32 (97.6) 2 (50.8) 11⁄2 (3 8 .1)13⁄32 (10.3)1⁄4 (6.4)

1

⁄2 (12.7)9⁄16 (14.3) — — — —

L50S Series, 500 VAC / 450 VDC

10 – 30 1 2 (50.8) —
31 – 60 2 1

61 – 100 3 2
101 – 200 3 2
201 – 400 3 2
401 – 600 3 2
601 – 80 0 3 2

5

⁄8 (41.3) 21⁄4 (5 7.2) 21⁄2 (63.5) 33⁄16 (81.0)13⁄16 (20.6)23⁄32 (18.3)11⁄32 (8.7)1⁄8 (3.2)

1

⁄8 (54.0) 211⁄16 (68.3) 3 (76.2) 35⁄8 (9 2.1) 1 (25.4) . 6 7 0 (17.0)11⁄32 (8.7)1⁄8 (3.2)

1

⁄8 (54.0) 213⁄16 (71.4) 215⁄16 (74.6) 35⁄8 (9 2.1) 17⁄32 (31.0) .895 (22.7)5⁄16 (7.9 )3⁄16 (4.75)

3

⁄32 (53.2) 225⁄32 (70.6) 313⁄32 (86.5) 411⁄32 (110 .3) 11⁄2 (3 8 .1) 1 (25.4)13⁄32 (10.3)1⁄4 (6.4)

7

⁄32 (56.4) 229⁄32 (73.8) 317⁄32 (89.7) 415⁄32 (113.5) 2 (50.8) 11⁄2 (3 8 .1)13⁄32 (10.3)1⁄4 (6.4)

7

⁄32 (56.4) 49⁄32 (108.7) 45⁄8 (117.5) 615⁄32 (164.3) 21⁄2 (63.5) 2 (5 0.8)17⁄32 (13.5)3⁄8 (9.5)

1

⁄2 (12.7)9⁄16 (14.3) — — — —

L60S Series, 600 VAC

1 – 30 1 5 ( 12 7.0) —

31 – 60 2 2

61 – 100 2 2
101 – 200 2 2

201 – 400 2 2
401 – 600 2 2
601 – 80 0 2 3

25

⁄32 (70.6) 37⁄16 (8 7.3) 311⁄16 (93.7) 43⁄8 (111.1)13⁄16 (20.6)23⁄32 (18.3)11⁄32 (8.7)1⁄8 (3.2)

29

⁄32 (73.8) 317⁄32 (89.7) 325⁄32 (96.0) 415⁄32 (113.5) 11⁄16 (2 7.0)23⁄32 (18.3)11⁄32 (8.7)1⁄8 (3.2)

29

⁄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)

29

⁄32 (73.8) 331⁄32 (100.8) 45⁄32 (105.6) 51⁄8 (130.2) 137⁄64 (4 0 .1) 1 (25.4)13⁄32 (10.3)1⁄4 (6.4)

7

⁄8 (73.0) 331⁄32 (100.8) 49⁄64 (105.2) 51⁄8 (130.2) 21⁄16 (52.8) 11⁄2 (3 8 .1)13⁄32 (10.3)1⁄4 (6.4)

1

⁄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)

5

⁄8 (15.9)13⁄16 (20.6) — — — —

L70S Series, 700 VAC / 650 VDC

10 – 30 1 2 (50.8) —
31 – 60 3 2

61 – 100 3 2
101 – 200 3 2
201 – 400 3 2
401 – 600 3 2

601 – 80 0 4 3

7

⁄8 (73.0) 37⁄16 (8 7.3) 325⁄32 (96.0) 43⁄8 (111.1) 1 (25.4)43⁄64 (17.1)11⁄32 (8.7)1⁄8 (3.2)

7

⁄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)

27

⁄32 (72.2) 317⁄32 (89.7) 45⁄32 (105.6) 53⁄32 (129.4) 11⁄2 (3 8 .1) 1(25.4)13⁄32 (10.3)1⁄4 (6.4)

27

⁄32 (72.2) 317⁄32 (89.7) 45⁄32 (105.6) 53⁄32 (129.4) 2 (50.8) 11⁄2 (3 8 .1)13⁄32 (10.3)1⁄4 (6.4)

27

⁄32 (72.2) 429⁄32 (124.6) 51⁄4 (133.4) 73⁄32 (180.2) 21⁄2 (63.5) 2 (5 0.8)17⁄32 (13.5)3⁄8 (9.5)

5

⁄16 (8 4.1) 55⁄16 (134.9) 613⁄16 (173.0) — 27⁄8 (73.0) 2 (50.8)5⁄8 (15.9)

1

⁄2 (12.7)9⁄16 (14.3) — — — —

KLC Series, 600 VAC

1 – 30 2 17⁄8 (4 7. 6) 21⁄2 (63.5) — 27⁄8 (73.0)9⁄16 (14.3)13⁄32 (10.3)1⁄4 (6.4)

31 – 60 2 2

61 – 100 3 2
101 – 200 3 2
201 – 400 3 2
401 – 800 3 2

3

⁄4 (69.9) 33⁄8 (85.7) 35⁄8 (9 2.1) 45⁄16 (109.5)13⁄16 (20.6)23⁄32 (18.3)11⁄32 (8.7)1⁄8 (3.2)

7

⁄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)

27

⁄32 (72.2) 317⁄32 (89.7) 43⁄8 (111.1) 53⁄32 (129.4) 11⁄2 (3 8 .1) 1 (25.4)13⁄32 (10.3)1⁄4 (6.4)

27

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)

27

32

⁄

(72.2) 421⁄32 (118 .3) 511⁄32 (135.7) 61⁄4 (158.8) 21⁄2 (63.5) 2 (5 0.8)9⁄16 (14.3)3⁄8 (9.5)

H:
J:

3

⁄64 (1.2 )

3

⁄8 (9.5)

5

⁄16 (7.9 )

D

C

A

Fig. 1

F

G

A
B
C
D

H

E

Fig, 2

F

G

A
B
C
D

H

E

Fig. 3

F

G

A
B
C

J

H

E

Fig. 4

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POWR-GARD® Fuse Datasheet

LA15QS ALTERNATE DIMENSION SEMICONDUCTOR FUSES

150 VAC • Very Fast-Acting • 1-6000 A

LA15QS Series

AMPERE

RAT ING

10 LA15 QS10-2 2 0.019 2.6
12 LA15QS12-2 2 0.030 3

15 LA15 QS15-2 2 0.042 3
20 LA15QS20-2 2 0.072 4
25 L A15QS25 -2 2 0.14 5.2
30 L A15QS30 -2 2 0.25 5.6
35 L A15QS3 5-1 1 0.21 9
40 L A15 QS4 0-1 1 0.28 10
40 LA15QS40-4TI 4TI 0.39 3.1
45 L A15QS 45-1 1 0.34 12
50 L A15QS 50-1 1 0.47 13
50 LA15Q S5 0-4 4 0.64 4
55 L A15QS5 5-1 1 Contact Factory Contact Factory
60 L A15QS6 0-1 1 0.94 14
70 L A15QS70-4 4 2 5.6
70 LA15QS70-4TI 4TI 2 5.6
80 LA15Q S8 0-4 4 2.5 8
80 LA15QS80-4TI 4TI 2.5 8
90 LA15Q S9 0-4 4 3 .1 9

100 LA15Q S100-4 4 3.6 10
100 LA15QS100-4TI 4TI 3.6 10
130 LA15Q S130-4 4 5.3 14
130 LA15QS130-4TI 4TI 5.3 14
150 L A15QS15 0-4 4 6.8 16
150 L A15QS15 0-4 IL 4IL 6.8 16

150 LA15Q S15 0-4TI 4TI 6.8 16
200 LA15QS200-4 4 9 22
200 LA15QS200-4IL 4IL 9 22

CATA LOG
NUMBER

1 LA15QS1-2 2 0.0002 0.68
3 LA15QS3 -2 2 0.003 1.7
4 LA15 QS4 -2 2 0.007 2.1
5 LA15QS5 -2 2 0.012 2.8
6 LA15QS6 -2 2 0.022 3.1
7 LA15Q S7-2 2 0.011 2.2
8 LA15QS8 -2 2 0.015 2.5

MOUNTING

TYPE

MAXIMUM

CLEARING I

2

VAC (A

s x 103)

2

t @150

WATTS LOSS

@ RAT ED

CURREN T (W)

AMPERE

RAT ING

250 L A15QS25 0-4 4 15 22
250 LA15QS250-4TI 4TI 15 27
300 L A15QS 30 0-4 4 22 33
300 L A15QS 300 -4IL 4IL 22 33
300 LA15QS300-4TL 4TI 22 33
350 L A15QS35 0-4 4 32 40
350 LA15QS350-4TI 4TI 32 40
400 LA15QS400-4 4 40 45
400 LA15QS400-4IL 4IL 40 45
400 LA15QS400-4TI 4TI 40 45
450 LA15Q S45 0-4 4 50 50
450 L A15QS45 0-4 IL 4IL 50 50
500 LA15Q S500- 4 4 90 30
500 L A15QS50 0-4 IL 4IL 90 30
600 L A15Q S600- 4 4 130 35
600 L A15QS 60 0-4 IL 4IL 130 35

800 LA15Q S800- 4 4 290 57
1000 LA15QS1000-4 4 520 75
1000 LA15QS1000-4IL 4IL 520 75
1000 LA15QS1000-4TI 4TI 520 75
1000 LA15QS1000-128 128 540 88
1000 LA15QS1000-128IL 12 8IL 540 88
1200 LA15QS1200 -128 12 8 680 100
1200 LA15QS1200 -128IL 128IL 680 100
150 0 L A15Q S1500 -128 128 1200 130
150 0 L A15Q S1500-128IL 128IL 1200 13 0
2000 LA15QS2000-128 128 1900 165
2000 LA15QS2000-128IL 12 8IL 1900 165
2500 LA15QS2500-128 128 3200 195
2500 LA15QS2500-128IL 128 IL 3200 195
3000 LA15QS3000-128 12 8 4800 240
3000 LA15QS3000-128IL 128IL 4800 240
3500 L A15Q S35 00-128 12 8 6500 260
4000 LA15QS4000-128 12 8 8500 270
4000 LA15QS4000-128IL 128IL 8500 270
5000 LA15QS5000-128 12 8 Contact Factory Contact Factory
6000 LA15QS6000-128 128 Contact Factory Contact Factory

CATA LOG
NUMBER

MOUNTING

TYPE

MAXIMUM

CLEA RING I

2

VAC (A

s x 103)

2

t @150

WATTS LOSS

CURREN T (W)

@ RAT ED

Specifications

Voltage Rating AC: 150 V
DC: 150 V

Interrupting Rating 100 k A
Ampere Range 1 – 6000 A
Approvals UL Recognized

Figure 1 Figure 2

Figure 3 Figure 4 Figure 5

Web Resources

For additional information, visit: littelfuse.com/la15qs

Dimensions

AMPERE

RAT INGS

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 – 45 0 4, 4TI*, 4IL* 2 2.66 (67.6) 1.00 (2 5. 4) 1.16 (29.5) 2.19 (5 5.6) 1.91 (48.5) 0.31 (7.9) 0.88 (22.4) 0.19 (4. 8) –
500 – 1000 4, 4TI*, 4IL* 2 3.5 0 (88.9) 1. 5 0 ( 38.1) 1.25 (3 1.8) 2.56 (65.0) 1.94 (49.3) 0.41 (10.4) 1.0 0 (25 .4 ) 0.25 (6.4) –
750 – 2000 12 8, 12 8I L* 3 1. 8 8 (4 7.9) 2.00 (50.8) 1.6 3 (41.4) 1.75 (44.5) 1.00 (25.4) – – –

2500 – 3000 128, 128IL* 3 1. 88 ( 47.9 ) 3.00 (76.2) 1.6 3 (41.4) 2.50 (63.5) 1.5 0 (38.1) – – –
3500 – 4000 128, 128IL* 4 1. 88 (4 7. 9) 3.50 (88.9) 1.63 (41. 4) 3.00 (76.2) 1.06 (27.0) 1.06 (27.0) – –
5000 – 6000 12 8 5 2.38 (60.5) 5.75 (146) 1. 88 (4 7.7) 5.00 (127) 1.5 0 (38.1) 1.50 (3 8.1) – –

*Optional Trigger Actuator (IL). Optional Trigger Indicator ( TI) see web for dimensions.

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MOUNTING

TYPE

FIGURE

NO.

DIMENSIONS INCHES (mm)

A B C D E F G H

3 of 8

Dimensions for reference only.

TAP

3

⁄8-24-1⁄2 deep

1

⁄2-20-1⁄2 deep

1

⁄2-20-1⁄2 deep

1

⁄2-20-1⁄2 deep

Rev: 4-E-012714

POWR-GARD® Fuse Datasheet

LA30QS ALTERNATE DIMENSION SEMICONDUCTOR FUSES

300 VAC • Very Fast-Acting • 35-4500 A

LA30QS Series

MA XIMUM

AMPERE

RAT ING

35 LA30QS35-4 4 0.9 6.4
40 LA30QS40-4 4 1.2 7
50 LA30QS50-4 4 2 9.9
60 LA30QS60-4 4 2.7 11.6
70 LA30QS70-4 4 1.6 11
80 LA30QS80-4 4 2.6 11

90 LA30QS90-4 4 3.2 13
100 LA3 0QS10 0-4 4 4 .1 13
100 LA30QS100-4TI 4TI 4 .1 13
125 L A30QS125 -4 4 6.3 16
130 LA30QS130-4 4 6.3 16
150 L A30QS150- 4 4 9.3 19
150 LA30QS150-4TI 4TI 9.3 19
175 L A30QS17 5-4 4 10 27
200 LA30QS200-4 4 15 30
200 LA30QS200-4TI 4TI 15 30
225 LA30QS225-4 4 22 33
250 LA30QS250-4 4 25 41
250 LA30QS250-4TI 4TI 25 41
300 LA30QS300-4 4 37 47
300 LA30QS300-4TI 4TI 37 47
350 LA30QS350-4 4 62 49
400 LA30QS400-4 4 83 56
400 LA30QS400-4IL 4IL 83 56
400 LA30QS400-4TI 4TI 83 56
450 LA30QS450-4 4 130 53

CATA LOG

NUMBER

MOUNTING

TYPE

CLEA RING I

@300 VAC
(A

2

s X 103)

2

t

WATTS L OSS

@ RAT ED

CURRENT

(W)

MAXIMUM

AMPERE

RAT ING

500 LA30QS500-4 4 16 0 59
550 LA30QS550-4 4 190 65
600 LA30QS600-4 4 230 69
600 LA30QS600-4TI 4TI 230 69
600 LA30QS600-4IL 4IL 230 69
700 LA30QS700-4 4 260 90
700 LA30QS700-128 128 260 73
800 LA30QS800-4 4 330 108
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 LA3 0QS1200-128 128 880 110
1500 LA30QS1500-128 128 1400 140
1500 LA30QS1500-128IL 128IL 14 00 140
1600 LA30 QS16 00-128 12 8 1690 15 0
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

CATA LOG

NUMBER

MOUNTING

TYPE

CLEA RING I

@300 VAC

2

(A

s X 103)

WATTS L OSS

2

t

@ RAT ED

CURRENT

(W)

Description

Littelfuse LA30QS series Semiconductor protection fuses
are intended for the protection of Power Semiconductors

Figure 1 Figure 2

such as diodes, phase control SCR’s and other power
semiconductor devices. The LA30QS is recommended
for new applications providing solutions for your critical
protection needs for 300V and less semiconductors.

Specifications

Voltage Rating AC: 300 V
DC: 300 V

Interrupting Rating 200 kA

Figure 3 Figure 4

Ampere Range 35 – 4500 A
Approvals UL Recognized

Web Resources

For additional information, visit: littelfuse.com/la30qs

Dimensions

AMPERE

RAT ING

35 – 60 4 1 3.19 (81.0) 0.81 (20.6) 1.63 (41. 4) 2.50 (63.5) 2.25 (57.5) 0.34 (8.6) 0.72 (18.3) 0.13 (3. 3) –

70 – 200 4 2 3.13 (79.5) 1.2 2 (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 – 800 4, 4IL* 2 3.84 (97.5) 1.50 ( 38.1) 1.5 9 (4 0.1) 2.91 (73.9) 2 . 2 8 (57.9) 0.41 (10.4) 1.00 (25.4) 0.25 (6.4) –

800 – 1200 12 8 3 2.59 (65.8) 3.00 (76.2) 2.34 (59.4) 2.50 (63.5) 1. 50 ( 3 8.1) – – –
1500 – 2500 128, 128IL* 4 2.59 (65.8) 3.50 (88.9) 2.3 4 (59.4) 3.00 (76.2) 1.5 0 (3 8.1) 1.5 0 (38.1) – –
3000 – 4500 128, 12 8IL* 4 2.59 (65.8) 4 .50 (114) 2.34 (59.4) 3.75 (95.3) 1.5 0 (3 8.1) 1.50 ( 3 8.1) – –

*Optional Trigger Actuator (IL). Optional Trigger Indicator ( TI) see web for dimensions.

MOUNTING

TYPE

FIGURE

NO.

DIMENSIONS INCHES (mm)

A B C D E F G H

Dimensions for reference only.

TAP

3

⁄8-24-1⁄2 deep

3

⁄8-24-1⁄2 deep

1

⁄2-20-1⁄2 deep

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4 of 8

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POWR-GARD® Fuse Datasheet

LA50QS ALTERNATE DIMENSION SEMICONDUCTOR FUSES

500 VAC • Very Fast-Acting • 35-1200 A

LA50QS Series

MAXIMUM

AMPERE

RAT ING

35 LA50QS35-4 4 0.56 6
40 LA50QS40-4 4 0.69 7
50 LA50QS50-4 4 1.1 8
60 LA50QS60-4 4 1.8 10
70 LA50QS70-4 4 1.9 12
80 LA50QS80-4 4 2.6 14

90 LA50QS90-4 4 3.6 15
100 LA50QS100-4 4 4.4 17
125 L A50QS125 -4 4 5.6 21
150 LA50QS150-4 4 9 25
175 L A50QS175- 4 4 15 29

200 LA50QS200-4 4 20 33

225 LA50QS225-4 4 25 37
250 LA50QS250-4 4 29 41

300 LA50QS300-4 4 55 49
350 LA50QS350-4 4 88 57
400 LA50QS400-4 4 98 65
450 LA50QS450-4 4 13 0 69
500 LA50QS500-4 4 16 0 77
600 LA50QS600-4 4 220 92

700 LA50QS700-4 4 270 110

800 LA50QS800-4 4 360 13 0

900 LA50QS900-4 4 500 140
1000 LA50QS1000-4 4 560 160
1200 LA50QS1200-4 4 930 175

CATA LOG

NUMBER

MOUNTING

TYPE

CLEA RING I

@500 VAC
(A

2

s X 103)

2

t

WATTS L OSS

@ RAT ED

CURREN T (W)

Description

In response to new equipment requirements, Littelfuse
LA50QS series fuses were developed to improve the overall
performance of semiconductor fuses. The LA50QS provides
the best protection features including lower I2t, longer life
when subjected to cyclic loading and lower watts loss.
LA50QS is today’s choice for the protection of dynamic solid
state equipment.

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

Web Resources

For additional information, visit: littelfuse.com/la50qs

Dimensions

Dimensions for reference only.

AMPERE

RAT ING

35 – 100 4

125 – 200 4

225 – 400 4

450 – 600 4

700 – 800 4

900 – 1200 4

Contact Littelfuse for characteristic curves.

littelfuse.com © 2014 Littelfuse POWR-GARD® Products

MOUNTING

TYPE

A B C D E F G H

3.63

(92.2)

3.63

(92.2)

4.34

(110 )

4.47
(114 )

6.47

(164.3)

6.97

(177.0)

1.0 0

(25.4)

1.2 2

(31.0)

1.50

(3 8.1)

2.00

(50.8)

2.50

(63.5)

3.00

(76.2)

2.13

(5 4.1)

2.13

(5 4.1)

2.09

(53.1)

2.22

(56.4)

2.22

(56.4)

3.22

(81.8)

DIMENSIONS INCHES (mm)

2.94

(74.7)

2.94

(74.7)

3.41

(86.6)

3.53

(89.7)

5.00

(127.0)

5.47

(138.9)

5 of 8

2.75

(69.9)

2.81

(71.4)

2.78

(70.6)

2.91

(73.9)

3.44

(8 7.3)

4.47

(113.5)

0.31
(7.9 )

0.31
(7.9 )

0.41

(10.4)

0.41

(10.4)

0.53

(13.5)

0.63

(15.9)

0.75

(19 .1)

1.0 0

(25.4)

1.0 0

(25.4)

1.50

(3 8.1)

1.50

(3 8.1)

2.38

(60.3)

0.13

(3.3)

0.19

(4.8)

0.25
(6.4)

0.25
(6.4)

0.25
(6.4)

0.44
(11.1)

Rev: 4-E-012714

POWR-GARD® Fuse Datasheet

A

B

C

ALTERNATE DIMENSION SEMICONDUCTOR FUSES

600 VAC/DC • Very Fast-Acting • 5-40 A

LA60Q Series Semiconductor Fuses

AMPERE

RAT ING

10 LA6 0Q10-2 2 110 1. 6

12 L A60Q12-2 2 150 2

15 L A60 Q15 -2 2 180 3

20 L A60Q20-2 2 330 4.4

25 LA60Q 25-2 2 440 5.5

30 L A60Q30-2 2 860 5.6

35 LA60Q35-2 2 1300 6.4

40 LA60Q40-2 2 1800 7

CATA LOG

NUMBER

5 L A60Q5-2 2 60 0.7
8 L A60Q8-2 2 70 1.1

MOUNTING

TYPE

MAXIMUM

CLEA RING I

@6 00 VAC (A

2

t

2

s)

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

Contact Littelfuse for characteristic curves.

WATTS L OSS

@ RAT ED

CURREN T (W)

Description

Littelfuse LA60Q semiconductor protection fuses feature
a 600 volt AC/DC rating in a compact size (1
LA60Q also has the lowest I

2

t 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 Inches

1

½

Web Resources

For additional information, visit: littelfuse.com/la60q

1

13

2

⁄

” x

”).

⁄

32

13

/

32

690 VAC/700 VDC • Very Fast-Acting • 10-100 A

LA70QSF Series French Cylindrical Fuses

AMPERE

RAT ING

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 1.5 0 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 1.8 5 16.0
80 LA70QS80-22F LA70QS80-22FI 22 x 58 3.80 17.8

100 LA70QS100-22F L A70QS100-22FI 22 x 58 8.00 19.0

CATA LOG
NUMBER

(NO S TRIKER)

CATA LOG
NUMBER

(W ITH ST RIKE R)

BODY

SIZE

MAXIMUM

CL EARING I

@7 00 VAC

2

(A

s X 103)

WATT S LOSS

2

t

@ RAT ED

CUR RENT ( W)

Description

Littelfuse French Cylindrical style semiconductor fuses are
an extension to the LA70QS series. They offer a solid-fill
design with high interrupting ratings and an optional striker
for visual or remote blown fuse indication.

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

For additional information, visit: www.littelfuse.com/semi

Dimensions

C

D

E

B

A

Recommended Fuse Holders

CYH series for non-striker fuses LA70QS(amp)22F
CYH1451 series for LA70QS(amp)14F

littelfuse.com © 2014 Littelfuse POWR-GARD® Products

FUSE SIZE

14x51 14 51 14 – –

22x58 22 58 16 – –
14x51 Striker 14 51 14 7.5 3.8
22x58 Striker 22 58 16 7.5 3.8

A B C D E

6 of 8

DIMENSIONS mm

Rev: 4-E-012714

POWR-GARD® Fuse Datasheet

LA70QS ALTERNATE DIMENSION SEMICONDUCTOR FUSES

700 VAC/VDC • Very Fast-Acting • 35-800 A

LA70QS Series Semiconductor Fuses

MAXIMUM

AMPERE

RAT ING

100 LA70 QS100 -4 4 3.6 24
125 LA70QS125- 4 4 6.9 22
125 LA70QS125 -4K 4K 6.9 22
150 L A7 0QS150 -4 4 11 28
150 LA 70QS150-4 K 4K 11 29
175 LA70QS175 -4 4 14 35
175 LA70QS17 5-4K 4K 14 35
200 LA70QS200-4 4 19 41
200 LA70QS200-4K 4 19 41
250 LA70QS250-4 4 42 42
300 LA70QS300-4 4 55 53
350 LA70QS350-4 4 72 64
400 LA70QS400-4 4 99 75
450 LA70QS450-4 4 125 75
450 LA70QS450-4K 4K 125 75
500 LA70QS500-4 4 150 92
500 LA70QS500-4K 4K 160 92
600 LA70QS600-4 4 222 116
600 LA70QS600-4K 4K 222 116
700 LA70QS700-4 4 332 125
800 LA70QS800-4 4 433 143

CATA LOG

NUMBER

35 LA70QS35-4 4 0.47 6.2
40 LA70QS40-4 4 0.58 7.5
50 L A70QS50-4 4 0.88 9.8
60 LA70QS60-4 4 1.2 12
70 LA70QS70-4 4 1.8 15
80 L A70QS80-4 4 2.3 16
90 L A70QS90-4 4 3 20

MOUNTING

TYPE

CLEA RING I

@700 VAC

2

(A

s X 103)

WATTS L OSS

2

t

CURREN T (W)

@ RAT ED

Description

Littelfuse LA70QS semiconductor fuses were developed
to provide improved performance required by today’s new
equipment. The LA70QS features lower I

2

t, improved cycling,
and lower watts loss. It is the best choice for the protection
of dynamic solid-state equipment.

Features/Benefits

• I2t improved protection of equipment.

• Superior cycling ability for long, reliable life on high

cycling loading.

• Lower watts loss for cooler operation.

• 700 Volt AC/DC rating provides greater design versatility

• Compact sizes allow downsizing of equipment

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

For additional information, visit: littelfuse.com/la70qs

Dimensions

Dimensions for reference only.

AMPERES

35 – 100 4 4. 3 8 (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 4 4.3 8 (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) 1.2 2 ( 31.0) 2.88 (73) 4.19 (10 6) 3.50 (88) 0.41 (10.3) 1.00 (25.4) 0.19 (4. 8)

225 – 400 4 5 .0 9 (12 9) 1. 5 0 (3 8.1) 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 4 5.09 (129) 2.00 (50.8) 2.84 (72.2) 4.16 (106) 3.53 (89.7) 0.41 (10.3) 1.5 0 (38.1) 0.25 (6.4)
450 – 600 4K 7. 0 9 (1 8 0) 2.00 (50.8) 2.84 (72.2) 6.16 (15 6) 3.53 (89.7) 0.53 (13.5) 1. 5 0 ( 3 8.1) 0.25 (6.4)
700 – 800 4 7.09 (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.

littelfuse.com © 2014 Littelfuse POWR-GARD® Products

MOUNTING

TY PE

A B C D E F G H

DIMENSIONS INCHES (mm)

7 of 8

Rev: 4-E-012714

POWR-GARD® Fuse Datasheet

Dimensions

LA100P ALTERNATE DIMENSION SEMICONDUCTOR FUSES

1000 VAC • Very Fast-Acting • 15-1000 A

LA100P Series Semiconductor Fuses

MAXIMUM

AMPERE

RAT ING

100 L A100P10 0-4 4 18 18
125 LA100P125-4 4 28 23
150 LA100P150-4 4 41 28
200 LA100P200-4 4 72 36
225 L A100P 225-4 4 91 40
250 LA100P250-4 4 110 46
300 LA100P300-4 4 160 55
350 LA100P350-4 4 220 65
400 LA100P400-4 4 290 70
500 LA100P500-4 4 450 90
600 LA100P600-4 4 650 110
650 LA100P650-4 4 780 120
700 LA100P700-4 4 880 125
800 LA100P800-4 4 12 00 140

1000 LA100P1000-4 4 1900 190

CATA LOG
NUMBER

15 L A100P15-1 1 0.6 3.4
20 L A10 0P2 0-1 1 0.8 5.9
25 L A100P25 -1 1 1,3 9
30 LA100P30-1 1 1.5 12.8
35 LA100P35-4 4 2.2 7.3
40 L A100P 40- 4 4 2.9 8.3
50 LA100P50-4 4 4.5 11
60 L A100P 60- 4 4 6.5 13
80 L A100P 80- 4 4 12 14

MOUNTING

TYPE

CLEA RING I

@1000 VAC

2

(A

s X 103)

WATTS L OSS

2

t

CURREN T (W)

@ RAT ED

Description

Littelfuse LA100P semiconductor protection fuses are rated
1000 V, extending the range of protection for UPS systems,
AC and DC drives, reduced voltage motor starters and
similar applications where lower I

2

t and superior reliability
are needed. With ratings from 15-1000 amperes, a wide
range of high voltage applications can be served.

Features/Benefits

• Low I2t minimizes damage to protected components on

short-circuit.

• Controlled arc voltage reduces stress to circuit

components during fuse clearing.

Specifications

Voltage Rating AC: 1000 V
DC: 750 V

Interrupting Rating 100 k A
Ampere Range 15 – 1000 A
Approvals UL Recognized

Web Resources

For additional information, visit: littelfuse.com/la100p

Figure 1 Figure 3Figure 2

AMPERES

125 – 200 4 2 5.72 (14 5) 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 (19 6 ) 2.50 (63.5) 3. 47 ( 8 8.1) 5.88 (149) 5.5 6 (147) 0.53 (13.5) 2.00 (50.8) 0.38 (9.7)
650 – 800 4 3 7.44 (189) 2.88 (73.2) 3.9 4 (10 0) 5.94 (151)

Optional Trigger Indicator (TI) for 50 A - 1000 A available
Contact Littelfuse for characteristic curves.

littelfuse.com © 2014 Littelfuse POWR-GARD® Products

Figure 4

Dimensions for reference only.

MOUNTING

TYPE

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) 1.2 2 ( 31) 3.50 (88.9) 4.31 (109) 4 .19 (106) 0.31 (7.9) 1.00 (25.4) 0 .19 (4 . 8)

1000 4 4 8.22 (209) 3.50 (88.9) 4. 47 (114) 6.59 (167) 5.84 (148) 0.6 3 (16) 2.75 (69.9) 0.50 (12.7) 1. 38 ( 35.1)

FIGURE

NO.

A B C D E F G H J

– – – – – – –

DIMENSIONS INCHES (mm)

8 of 8

–

0.6 3 (16) 2.00 (50.8) 0.38 (9.7) 0.31 (7.9)

Rev: 4-E-012714

–

–

–

–

–