88
LA30QS Semiconductor Fuses
300 VAC
I
Very Fast-Acting
I
35 4500 Amperes
LA 30 QS 600 -4 TI
Style
Littelfuse
Ampere
Rating
Mounting
Type
Voltage
(300)
SPECIFICATIONS
Voltage Rating: AC: 300 volts
DC: 300 volts
Interrupting Rating: 200,000 Amperes
Ampere Range: 35 4500 Amperes
Approvals: UL Recognized under the components
program.
Littelfuse's LA30QS series Semiconductor protection
fuses are intended for the protection of Power
Semiconductors 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 at 300V and less semicon-
ductors.
FEATURES
I
Low I
2
t minimizes damage to protected components on
short circuit.
I
Controlled arc voltage reduces stress to circuit com-
ponents during fuse clearing.
I
Choice of mounting types provides options for unique
termination requirements.
I
Indicator options allow identification of blown fuses.
I
Superior DC capabilities.
APPLICATIONS
Protection of 300 volt heavy duty rectifiers and similar
heavy duty power supplies.
ORDERING INFORMATION
Integral
Blown-Fuse
Indicator
Ferrule
1
Blades/Bolt-in
4
Hockey Puck, bolt-in
128
Trigger Indicator
TI
Trigger Actuator
IL
Contact Littelfuse for characteristic curves.
Note: Mounting types and integral blown fuse indicators are
optional for specified ratings.
NEW
89
LA30QS Semiconductor Fuses
300 VAC
I
Very Fast-Acting
I
35 4500 Amperes
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
LA30QS100-4
4
4.1
13
100
LA30QS100-4TI
4TI
4.1
13
125
LA30QS125-4
4
6.3
16
130
LA30QS130-4
4
6.3
16
150
LA30QS150-4
4
9.3
19
150
LA30QS150-4TI
4TI
9.3
19
175
LA30QS175-4
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
Ampere
Rating
Littelfuse
Catalog
Number
Catalog Numbers & Technical Data
Mounting
Type
Maximum
Clearing I
2
t
@300 VAC
(A
2
S x 10
3
)
Watts Loss
@ Rated
Current (W)
500
LA30QS500-4
4
160
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
LA30QS1200-128
128
880
110
1500
LA30QS1500-128
128
1400
140
1500
LA30QS1500-128IL
128IL
1400
140
1600
LA30QS1600-128
128
1690
150
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
Ampere
Rating
Littelfuse
Catalog
Number
Mounting
Type
Maximum
Clearing I
2
t
@300 VAC
(A
2
S x 10
3
)
Watts Loss
@ Rated
Current (W)
35 60
4
1
3.19
.81
1.63
2.50
2.25
0.34
0.72
0.13
-
(81.0)
(20.6)
(41.4)
(63.5)
(57.5)
(8.6)
(18.3)
(3.3)
-
70 200
4
2
3.13
1.22
1.63
2.44
2.31
.31
1.00
.19
-
(79.5)
(31.0)
(41.4)
(62.0)
(58.7)
(7.9)
(25.4)
(4.8)
-
225 700
4, 4IL*
2, 3*
3.84
1.50
1.59
2.91
2.28
.41
1.00
.25
-
(97.5)
(38.1)
(40.1)
(73.9)
(57.9)
(10.4)
(25.4)
(6.4)
-
700 1200
128
4
2.59
3.00
2.34
2.50
1.50
-
-
-
3/8-24-1/2 deep
(65.8)
(76.2)
(59.4)
(63.5)
(38.1)
-
-
-
-
1500 2500
128, 128IL*
5, 6*
2.59
3.50
2.34
3.00
1.50
1.50
-
-
3/8-24-1/2 deep
(65.8)
(88.9)
(59.4)
(76.2)
(38.1)
(38.1)
-
-
-
3000 4500
128, 128IL*
5, 6*
2.59
4.50
2.34
3.75
1.50
1.50
-
-
1/2-20-1/2 deep
(65.8)
(114)
(59.4)
(95.3)
(38.1)
(38.1)
-
-
-
AMPERES
MOUNT.
TYPE
DIMENSIONS
Dimensions for reference only.
FIG.
NO.
DIMENSIONS IN INCHES (mm in parentheses)
Tap
A
B
C
D
E
F
G
H
* Optional Actuator (IL)
FIGURE 1
FIGURE 2
FIGURE 3
FIGURE 4
FIGURE 5
FIGURE 6
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