Special Purpose Fuses
LA120X Semiconductor Fuses
1200 VAC • Very Fast Acting • 1/2 – 30 Amperes
Littelfuse LA120X semiconductor protection fuses, rated 1/2 through
30A, 1200 VAC are popular for use in traction drive auxiliary circuits and
similar applications. LA120X fuses are also suitable for use on 1000VDC
auxiliary circuits with low time constants.
Features
• 1000 Volt DC rating for a wide range of circuits.
• Compact size fits in where competitive sizes will not fit.
Applications
Protection of traction drive auxiliary circuits, etc.
Dimensions
In Inches (mm in parentheses)
4 5/8
(117)
.812
(20.6)
Special Purpose Fuses
Ordering Information
LA 120 X 25 -1
Littelfuse
Voltage
(1200)
Style
Catalog Numbers & Technical Data
Ampere Rating
Ampere
Rating
Littelfuse Catalog
Number
Mounting Type
Maximum Clearing I2 t
@1200 VAC (A 2S)
⁄
1
2
3
4
5
6
10
15
20
25
30
LA120A1/2-1
LA120X1-1
LA120X2-1
LA120X3-1
LA120X4-1
LA120X5-1
LA120X6-1
LA120X10-1
LA120X15-1
LA120X20-1
LA120X25-1
LA120X30-1
1
1
1
1
1
1
1
1
1
1
1
1
1.9
7.5
30
69
120
190
280
970
2100
3700
5700
8300
12
© 2005 Littelfuse • POWR-GARD™ Products Catalog
Mounting Type
Ferrule
Specifications
Voltage Rating:
Interrupting Rating:
Ampere Range:
AC: 1200 Volts
DC: 1000 Volts
100,000 Amperes
1
⁄2 – 30 Amperes
Note: Mounting type 1 can use 109002 and 129002 clips.
www.littelfuse.com
101
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