Special Purpose Fuses
LA15QS Semiconductor Fuses
150 VAC • Very Fast Acting • 1 – 6000 Amperes
Littelfuse LA15QS series Semiconductor fuses were designed for the
specific protection of diodes and other semiconductor devices rated
150VAC/DC. The LA15QS product line compact design is perfect for
those applications that have limitations on available space.
Features
• Low I
2
t minimizes damage to protected components on short-circuit.
• Controlled arc voltage reduces stress to circuit components during
fuse clearing.
• Choice of mounting types provides options for unique termination
requirements.
• Indicator options allow identification of blown fuses.
Applications
Protection of heavy duty devices such as electromechanical rectifiers.
Ordering Information
LA 15 QS 400 -4 TI
Littelfuse
Voltage
Special Purpose Fuses
(150)
Style
Ampere Rating
Mounting Type
Ferrule
Ferrule, midget dim.
Blades/Bolt-in
Hockey Puck, bolt-in
1
2
4
128
Integral Blown-
Fuse Indicator
Trigger Indicator
Trigger Actuator
TI
IL
Note: Mounting types and integral blown fuse indicators are optional for
specified ratings.
Specifications
Voltage Rating:
Interrupting Rating:
Ampere Range:
Approvals:
AC: 150 volts
DC: 150 volts
100,000 Amperes
1 – 6000 Amperes
UL Recognized under the components program.
Contact Littelfuse for characteristic curves.
88
www.littelfuse.com
© 2005 Littelfuse
•
POWR-GARD
™
Products Catalog
Special Purpose Fuses
LA15QS Semiconductor Fuses
150 VAC • Very Fast Acting • 1 – 6000 Amperes
Catalog Numbers & Technical Data
Maximum
Watts Loss @
Ampere
Littelfuse
Mounting
Clearing I
2
t @150 Rated Current
Rating Catalog Number
Type
VAC (A
2
S x 10
3
)
(W)
1
2
3
4
5
6
7
8
10
12
15
20
25
30
35
40
40
45
50
50
55
60
70
70
80
80
90
100
100
130
130
150
150
150
200
200
250
LA15QS1-2
LA15QS2-2
LA15QS3-2
LA15QS4-2
LA15QS5-2
LA15QS6-2
LA15QS7-2
LA15QS8-2
LA15QS10-2
LA15QS12-2
LA15QS15-2
LA15QS20-2
LA15QS25-2
LA15QS30-2
LA15QS35-1
LA15QS40-1
LA15QS40-4TI
LA15QS45-1
LA15QS50-1
LA15QS50-4
LA15QS55-1
LA15QS60-1
LA15QS70-4
LA15QS70-4TI
LA15QS80-4
LA15QS80-4TI
LA15QS90-4
LA15QS100-4
LA15QS100-4TI
LA15QS130-4
LA15QS130-4TI
LA15QS150-4
LA15QS150-4IL
LA15QS150-4TI
LA15QS200-4
LA15QS200-4IL
LA15QS250-4
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
1
4TI
1
1
4
1
1
4
4TI
4
4TI
4
4
4TI
4
4TI
4
4IL
4TI
4
4IL
4
0.0002
0.001
0.003
0.007
0.012
0.022
0.011
0.015
0.019
0.030
0.042
0.072
0.14
0.25
0.21
0.28
0.39
0.34
0.47
0.64
Contact Factory
0.94
2
2
2.5
2.5
3.1
3.6
3.6
5.3
5.3
6.8
6.8
6.8
9
9
15
0.68
1.3
1.7
2.1
2.8
3.1
2.2
2.5
2.6
3
3
4
5.2
5.6
9
10
3.1
12
13
4
Contact Factory
14
5.6
5.6
8
8
9
10
10
14
14
16
16
16
22
22
22
Maximum
Watts Loss @
Ampere
Littelfuse
Mounting
Clearing I
2
t @150 Rated Current
Rating Catalog Number
Type
VAC (A
2
S x 10
3
)
(W)
250
300
300
300
350
350
400
400
400
450
450
500
500
600
600
800
1000
1000
1000
1000
1000
1200
1200
1500
1500
2000
2000
2500
2500
3000
3000
3500
4000
4000
5000
6000
LA15QS250-4TI
LA15QS300-4
LA15QS300-4IL
LA15QS300-4TL
LA15QS350-4
LA15QS350-4TI
LA15QS400-4
LA15QS400-4IL
LA15QS400-4TI
LA15QS450-4
LA15QS450-4IL
LA15QS500-4
LA15QS500-4IL
LA15QS600-4
LA15QS600-4IL
LA15QS800-4
LA15QS1000-4
LA15QS1000-4IL
LA15QS1000-4TI
LA15QS1000-128
LA15QS1000-128IL
LA15QS1200-128
LA15QS1200-128IL
LA15QS1500-128
LA15QS1500-128IL
LA15QS2000-128
LA15QS2000-128IL
LA15QS2500-128
LA15QS2500-128IL
LA15QS3000-128
LA15QS3000-128IL
LA15QS3500-128
LA15QS4000-128
LA15QS4000-128IL
LA15QS5000-128
LA15QS6000-128
4TI
4
4IL
4TI
4
4TI
4
4IL
4TI
4
4IL
4
4IL
4
4IL
4
4
4IL
4TI
128
128IL
128
128IL
128
128IL
128
128IL
128
128IL
128
128IL
128
128
128IL
128
128
15
22
22
22
32
32
40
40
40
50
50
90
90
130
130
290
520
520
520
540
540
680
680
1200
1200
1900
1900
3200
3200
4800
4800
6500
8500
8500
Contact Factory
Contact Factory
27
33
33
33
40
40
45
45
45
50
50
30
30
35
35
57
75
75
75
88
88
100
100
130
130
165
165
195
195
240
240
260
270
270
Contact Factory
Contact Factory
Special Purpose Fuses
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Dimensions
Amperes
1 – 30
35 – 60
70 – 450
500 – 1000
750 – 2000
2500 – 3000
3500 – 4000
5000 – 6000
Dimensions for reference only.
Fig.
No.
1
1
2, 3*
2, 3*
4, 5*
4, 5*
6, 7*
8
1.50
2.00
2.66
3.50
1.88
1.88
1.88
2.38
Mount.
Type
2
1
4, 4TI*, 4IL*
4, 4TI*, 4IL*
128, 128IL*
128, 128IL*
128, 128IL*
128
A
(38.1)
(50.8)
(67.6)
(88.9)
(47.9)
(47.9)
(47.9)
(60.5)
B
0.41 (10.4)
0.81 (20.6)
1.13 (28.7)
1.50 (38.1)
2.00 (50.8)
3.00 (76.2)
3.50 (88.9)
5.75 (146)
Dimensions in Inches (mm in parentheses)
C
D
E
F
–
–
1.16 (29.5)
1.25 (31.8)
1.63 (41.4)
1.63 (41.4)
1.63 (41.4)
1.88 (47.7)
–
–
2.19 (55.6)
2.56 (65.0)
1.75 (44.5)
2.50 (63.5)
3.00 (76.2)
5.00 (127)
–
–
1.91 (48.5)
1.94 (49.3)
1.00 (25.4)
1.50 (38.1)
1.06 (27.0)
1.50 (38.1)
–
–
0.31 (7.9)
0.41 (10.4)
–
–
1.06 (27.0)
1.50 (38.1)
G
–
–
0.88 (22.4)
1.00 (25.4)
–
–
–
–
H
–
–
0.19 (4.8)
0.25 (6.4)
–
–
–
–
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
* Optional Trigger Actuator (IL)
© 2005 Littelfuse
•
POWR-GARD
™
Products Catalog
www.littelfuse.com
89
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