LR250 查看數據表（PDF） - Littelfuse, Inc
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LR250 Datasheet PDF : 3 Pages
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LLNRK/LLSRK Series POWR-PRO® Class RK1
250/600 VAC s Dual-Element, Time-Delay s 1/10 – 600 Amperes
A
F
G
B
E
C
FIG. 1
K
D
H
J
A
C
B
FIG. 2
E
FD
G
70-600A
AMPERES
REFER TO
FIG. NO.
1/10 – 30
1
SERIES
LLNRK
LLSRK
LLNRK
35 – 60
1
LLSRK
70 – 100
2
LLNRK
LLSRK
110 – 200
2
LLNRK
LLSRK
225 – 400
2
LLNRK
LLSRK
450 – 600
2
LLNRK
LLSRK
A
2
(50.8)
5
(127.0)
3
(76.2)
5-1/2
(139.7)
5-7/8
(149.2)
7-7/8
(200.0)
7-1/8
(181.0)
9-5/8
(244.5)
8-5/8
(219.1)
11-5/8
(295.3)
10-3/8
(263.5)
13-3/8
(339.7)
B
1/2
(12.7)
3/4
(19.1)
3/4
(19.1)
1
(25.4)
1
(25.4)
1-1/4
(31.8)
1-1/2
(38.1)
1-3/4
(44.5)
2
(50.8)
2-1/2
(63.5)
2-1/2
(63.5)
3
(76.2)
DIMENSIONS IN INCHES (mm in parentheses)
C
1/2
(12.7)
5/8
(15.9)
5/8
(15.9)
5/8
(15.9)
1-1/16
(27.0)
1-1/16
(27.0)
1-15/32
(37.3)
1-15/32
(37.3)
1-15/16
(49.2)
2
(50.8)
2-3/8
(60.3)
2-13/32
(61.1)
D
9/16
(14.3)
13/16
(20.6)
13/16
(20.6)
1-1/16
(27.0)
1-1/16
(27.0)
1-5/16
(33.3)
1-19/32
(40.5)
1-27/32
(46.8)
2-3/32
(53.2)
2-19/32
(65.9)
2-19/32
(65.9)
3-3/32
(78.6)
E
5/64
(2.0)
3/32
(2.4)
3/32
(2.4)
3/32
(2.4)
1/8
(3.2)
1/8
(3.2)
3/16
(4.8)
3/16
(4.8)
1/4
(6.4)
1/4
(6.4)
1/4
(6.4)
1/4
(6.4)
F
5/32
(4.0)
3/16
(4.8)
3/16
(4.8)
1/4
(6.4)
3/4
(19.1)
3/4
(19.1)
1-1/8
(28.6)
1-1/8
(28.6)
1-5/8
(41.3)
1-5/8
(41.3)
2
(50.8)
2
(50.8)
G
3/8
(9.5)
5/8
(15.9)
5/8
(15.9)
7/8
(22.2)
1-1/4
(31.8)
1-1/2
(38.1)
1-27/32
(46.8)
2-3/32
(53.2)
2-11/32
(59.5)
2-27/32
(72.2)
2-27/32
(72.2)
3-11/32
(84.93)
H
—
—
—
—
1/4
(6.4)
1/4
(6.4)
7/16
(11.1)
7/16
(11.1)
5/8
(15.9)
5/8
(15.9)
3/4
(19.1)
3/4
(19.1)
J
—
—
—
—
9/32
(7.1)
9/32
(7.1)
9/32
(7.1)
9/32
(7.1)
13/32
(10.3)
13/32
(10.3)
17/32
(13.5)
17/32
(13.5)
K
—
—
—
—
1/2
(12.7)
1/2
(12.7)
11/16
(17.5)
11/16
(17.5)
15/16
(23.8)
15/16
(23.8)
1-1/8
(28.6)
1-1/8
(28.6)
LLNRK
1000
800
600
400
300
200
100
80
60
40
30
20
10
8
6
4
3
2
1
.8
.6
.4
.3
.2
.1
.08
.06
.04
.03
.02
.01
LLSRK
1000
800
600
400
300
200
100
80
60
40
30
20
10
8
6
4
3
2
1
.8
.6
.4
.3
.2
.1
.08
.06
.04
.03
.02
.01
CURRENT IN AMPERES
CURRENT IN AMPERES
13
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