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L15S001 Datasheet, PDF (7/8 Pages) Littelfuse – Traditional Semiconductor Fuses
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POWR-GARD® Fuse Datasheet
LA70QS Alternate dimension Semiconductor Fuses
700 VAC/VDC • Very Fast-Acting • 35-800 A
LA70QS Series Semiconductor Fuses
Ampere Catalog Mounting
Rating Number
Type
35 LA70QS35-4
4
40 LA70QS40-4
4
50 LA70QS50-4
4
60 LA70QS60-4
4
70 LA70QS70-4
4
80 LA70QS80-4
4
90 LA70QS90-4
4
100 LA70QS100-4
4
125 LA70QS125-4
4
125 LA70QS125-4K
4K
150 LA70QS150-4
4
150 LA70QS150-4K
4K
175 LA70QS175-4
4
175 LA70QS175-4K
4K
200 LA70QS200-4
4
200 LA70QS200-4K
4
250 LA70QS250-4
4
300 LA70QS300-4
4
350 LA70QS350-4
4
400 LA70QS400-4
4
450 LA70QS450-4
4
450 LA70QS450-4K
4K
500 LA70QS500-4
4
500 LA70QS500-4K
4K
600 LA70QS600-4
4
600 LA70QS600-4K
4K
700 LA70QS700-4
4
800 LA70QS800-4
4
Maximum
Clearing I2t
@700 VAC
(A2s x 103)
0.47
0.58
0.88
1.2
1.8
2.3
3
3.6
6.9
6.9
11
11
14
14
19
19
42
55
72
99
125
125
150
160
222
222
332
433
Watts Loss
@ Rated
Current (W)
6.2
7.5
9.8
12
15
16
20
24
22
22
28
29
35
35
41
41
42
53
64
75
75
75
92
92
116
116
125
143
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.
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
Interrupting Rating
Ampere Range
Approvals
AC: 700 V
DC: 700 V
AC: 200 kA
DC: 100 kA
35 – 800 A
UL Recognized
CSA Certified
Web Resources
For additional information, visit: littelfuse.com/la70qs
Dimensions
Amperes
35 – 100
125 – 200
125 – 200
225 – 400
450 – 600
450 – 600
700 – 800
Mounting
Type
4
4
4K
4
4
4K
4
A
4.38 (111)
4.38 (111)
5.09 (129)
5.09 (129)
5.09 (129)
7.09 (180)
7.09 (180)
Contact Littelfuse for characteristic curves.
B
1.00 (25.4)
1.22 (31.0)
1.22 (31.0)
1.50 (38.1)
2.00 (50.8)
2.00 (50.8)
2.50 (63.5)
C
2.88 (73)
2.88 (73)
2.88 (73)
2.84 (72.2)
2.84 (72.2)
2.84 (72.2)
2.84 (72.2)
Dimensions Inches (mm)
D
3.69 (93.6)
3.69 (93.6)
4.19 (106)
4.16 (106)
4.16 (106)
6.16 (156)
5.28 (134)
E
3.50 (88.9)
3.56 (90.5)
3.50 (88)
3.53 (89.7)
3.53 (89.7)
3.53 (89.7)
4.91 (125)
F
0.31 (7.9)
0.31 (7.9)
0.41 (10.3)
0.40 (10.3)
0.41 (10.3)
0.53 (13.5)
0.53 (13.5)
Dimensions for reference only.
G
0.75 (19.0)
1.00 (25.4)
1.00 (25.4)
1.50 (38.1)
1.50 (38.1)
1.50 (38.1)
2.00 (50.8)
H
0.13 (3.2)
0.19 (4.8)
0.19 (4.8)
0.25 (6.4)
0.25 (6.4)
0.25 (6.4)
0.38 (9.5)
Littelfuse.com
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© 2013 Littelfuse POWR-GARD® Products
Rev: 4-C-080613
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