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Self-recovery fuse LR series


Features

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Product Details


★ Product Dimensions

 

Model
A
B
C
D
E
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
LR-200
20.9
23.1
4.6
5.5
0.4
1.0
3.5
6.0
3.8
4.2
LR-260
20.9
23.1
4.6
5.5
0.4
1.0
3.5
6.0
3.8
4.2
LR-300
24.0
27.5
6.9
7.5
0.4
1.0
4.0
7.5
4.8
5.2
LR-350
24.0
27.5
6.9
7.5
0.4
1.0
4.0
7.5
4.8
5.2
LR-380
24.0
27.5
6.9
7.5
0.4
1.0
4.0
7.5
4.8
5.2
LR-420
24.0
27.5
9.8
10.5
0.4
1.0
4.0
7.5
4.8
5.2
LR-450
24.0
27.5
9.8
10.5
0.4
1.0
4.0
7.5
4.8
5.2
LR-550
24.0
27.5
9.8
10.5
0.4
1.0
4.0
7.5
4.8
5.2
LR-600
27.1
29.1
13.9
14.5
0.4
1.0
4.1
5.5
5.9
6.6
LR-730
27.1
29.1
13.9
14.5
0.4
1.0
4.1
5.5
5.9
6.6
LR-900
45.4
47.6
7.9
8.5
0.4
1.0
4.6
6.2
5.9
6.1
LR-1410
58.0
60.0
13.4
14.0
0.4
1.0
4.2
5.8
5.9
6.1

 

★ Electrical Characteristic

Model
Ihold
Itrip
Vmax
Imax
Pd
Itrip
Ttrip
Rmin
Rmax
R1max
(A)
(A)
(V)
(A)
(W)
Current(A)
Time(S)
(Ω)
(Ω)
(Ω)
LR200
2.00
4.40
16
100
1.60
10.0
5.0
20
40
80
LR210
2.10
4.40
16
100
1.60
10.5
5.0
20
35
70
LR260
2.60
5.20
16
100
1.60
13.0
5.0
15
30
60
LR300
3.00
6.30
24
100
2.40
15.0
5.0
15
31
62
LR350
3.50
7.00
24
100
2.40
17.5
5.0
17
31
62
LR380
3.80
7.60
24
100
2.40
19.0
5.0
13
22
44
LR420
4.20
8.30
24
100
2.00
21.0
5.0
12
24
48
LR450
4.50
9.00
20
100
2.00
22.5
5.0
11
20
40
LR550
5.50
10.50
20
100
2.00
27.5
5.0
9
16
32
LR600
6.00
11.70
20
100
2.80
30.0
5.0
7
14
28
LR730
7.30
14.10
20
100
3.30
36.5
5.0
5
12
24
LR900
9.00
16.70
20
100
3.80
45.0
5.0
6
10
20
LR1410
14.10
26.20
20
100
6.00
70.5
5.0
3
5
10

 

★ Thermal Derating Chart-IH( A)

Model
Maximum ambient operating temperatures( ℃ )
-40
-20
0
25
40
50
60
70
80
85
LR-200
3.1
2.8
2.5
2.0
1. 7
1.5
1.4
1.2
1.0
0.9
LR-260
3.8
3.4
3.1
2.6
2.2
2.0
1.9
1.7
1.4
1.3
LR-300
5.1
4.4
3.7
3.0
2.3
1.9
1.6
1.2
0.9
0.7
LR-350
5.3
4.8
4.3
3.5
3.0
2.7
2.5
2.1
1.8
1.7
LR-380
5.4
4.9
4.4
3.8
3.3
3.0
2.8
2.5
2.3
2.1
LR-420
6.3
5.7
5.1
4.2
3.6
3.3
3.0
2.6
2.2
2.1
LR-450
6.5
5.8
5.3
4.5
3.9
3.6
3.3
2.9
2.6
2.4
LR-550
7.6
6.9
6.2
5..5
4.7
4.3
4.0
3.6
3.2
3.0
LR-600
8.7
7.8
7.1
6.0
5.2
4.7
4.4
3.9
3.4
3.2
LR-730
10.5
9.5
8.6
7.3
6.3
5.7
5.4
4.7
4.2
4.0
LR-900
12.7
11.4
10
9.0
7.5
6.8
6.2
5.5
4.9
4.5
LR-1410
19.9
17.8
15.7
14.1
11.8
10.8
9.7
8.7
7.7
7.2

 

 

 

★ Test Procedures And Requirements

Test
Test Conditions
Accept/Reject Criteria
Resistance
In still air @ 25℃
Rmin≤R≤Rmax
Time to Trip
Specified current,Vmax,25℃
Tmaximum Time to Trip
Hold Current
30min,at IH
No trip
Trip Cycle Life
Vmax,Imax,1000cycles
No arcing or burning
Trip Endurance
Vmax,24hours
No arcing or burning

 

★ Physical Characteristics and Environmental Specifications

Physical Characteristics

Leadmaterial 0.125mm nominal hickness,quarter-hardnickel
Tape material Polyester

Environmental Specifications

Test
Conditions
ResistanceChange
Passiveaging
70℃,1000hours
±10%
Humidityaging
85℃/85%RH.7days
±5%
Vibration
IL-STD-883C,TestConditionA
Nochage

 

★ Electrical Specifications

Ihold=Hold current: maximum current device will not trip in 25℃ still air.

Itrip= Trip current: minimum current device will always trip in 25℃ still air.

Vmax=Maximum voltage device can withstand without damage at rated current(Imax).

Imax=Maximum fault current device can withstand without damage at rated voltage(vmax).

Pdmax= Power dissipated when device is in the tripped state in 25℃ still air environment at rated voltage.

Max Time-to-trip=Maximum time to trip(s) at assigned current.

Rmin=Minimum device resistance prior to tripping at 25℃.

Rmax=Maximum device resistance prior to tripping at 25℃.

R1max=Maximum device resistance one hour after it is tripped at 25℃