Special Purpose Fuses
LA70QS French Cylindrical Fuses
690 Volts • Very Fast Acting • 10 – 100 Amperes
Ordering Information
LA 70 QS 20 -14F I
Littelfuse
Voltage
(700)
Style
Ampere Rating
Size
14 x 51mm
22 x 58mm
14F
22F
Optional Striker
(I)
B
C
A
Special Purpose Fuses
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.
The international 14x51mm and 22x58mm sizes are accepted
worldwide.
B
C
D
E
A
Catalog Numbers & Technical Data
Ampere
Rating
10
12
16
20
25
32
40
50
20
25
32
40
50
63
80
100
Littelfuse
Catalog
Number
(No Striker)
LA70QS10-14F
LA70QS12-14F
LA70QS16-14F
LA70QS20-14F
LA70QS25-14F
LA70QS32-14F
LA70QS40-14F
LA70QS50-14F
LA70QS20-22F
LA70QS25-22F
LA70QS32-22F
LA70QS40-22F
LA70QS50-22F
LA70QS63-22F
LA70QS80-22F
LA70QS100-22F
Littelfuse
Catalog
Body
Number
Size
(With Striker)
LA70QS10-14FI
LA70QS12-14FI
LA70QS16-14FI
LA70QS20-14FI
LA70QS25-14FI
LA70QS32-14FI
LA70QS40-14FI
LA70QS50-14FI
LA70QS20-22FI
LA70QS25-22FI
LA70QS32-22FI
LA70QS40-22FI
LA70QS50-22FI
LA70QS63-22FI
LA70QS80-22FI
LA70QS100-22FI
14x51
14x51
14x51
14x51
14x51
14x51
14x51
14x51
22x58
22x58
22x58
22x58
22x58
22x58
22x58
22x58
Maximum
Watts Loss
Clearing I
2
t
@ Rated
@700 VAC
Current (W)
(A
2
S x 10
3
)
0.04
0.06
0.10
0.16
0.27
1.50
0.70
1.50
0.076
0.125
0.27
0.48
0.80
1.85
3.80
8.00
3.5
4.4
4.8
5.2
5.8
7.0
10.7
11.6
8.0
10.0
11.0
13.0
14.9
16.0
17.8
19.0
Fuse Size
14x51 (no striker)
22x58 (no striker)
14x51 (with striker)
22x58 (with striker)
Dimensions for reference only.
Dimensions in mm
A
14
22
14
22
B
51
58
51
58
C
14
16
14
16
D
–
–
7.5
7.5
E
–
–
3.8
3.8
Specifications
Voltage Rating:
Interrupting Rating:
Ampere Range:
Approvals:
AC: 690 Volts
DC: 700 Volts
AC: 200,000 Amperes
DC: 100,000 Amperes
10 – 100 Amperes
UL Recognized under the components program.
CSA Certified.
Recommended Fuse Blocks
CYH series for non-striker fuses LA70QS(amp)22F
LPSG series for the striker style LA70QS(amp)22FI
98
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