Surface Mount Fuses
Introduction to Circuit Protection
Transientology
NANO
2®
> Very Fast-Acting > 451/453 Series
Electrical Specifications by Item
Ampere
Rating
(A)
0.062
0.080
0.100
0.125
0.160
0.200
0.250
0.315
0.375
0.400
0.500
0.630
0.750
0.800
1.00
1.25
1.50
1.60
2.00
2.50
3.00
3.15
3.50
4.00
5.00
6.30
7.00
8.00
Amp
Code
.062
.080
.100
.125
.160
.200
.250
.315
.375
.400
.500
.630
.750
.800
001.
1.25
01.5
01.6
002.
02.5
003.
3.15
03.5
004.
005.
06.3
007.
008.
Max
Voltage
Rating
(V)
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
35 amperes @125 VAC/
50 amperes @125 VDC
10.0
010.
125
300 amperes @32 VDC
PSE: 100 amperes
@100VAC
12.0
15.0
012.
015.
65
65
50 amperes @65 VAC/VDC
300 amperes @24 VDC
0.0049
0.0037
47.97
97.82
x
x
x
x
0.0056
26.46
x
x
x
50 amperes @125VAC/VDC
300 amperes @32VDC
PSE: 100 amperes
@100VAC
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
5.5000
4.0500
3.1000
1.7000
1.2157
0.8372
0.5765
0.3918
0.6100
0.5600
0.4200
0.3050
0.2450
0.2120
0.1530
0.0780
0.0630
0.0580
0.0367
0.0286
0.0227
0.0215
0.0200
0.0160
0.0125
0.0096
0.0090
0.0077
Nominal
Melting
I
2
t (A
2
sec)
0.00019
0.00033
0.00138
0.00286
0.0048
0.0089
0.0158
0.0311
0.0425
0.0484
0.0795
0.143
0.185
0.271
0.459
0.664
0.853
1.060
0.530
1.029
1.650
1.920
2.469
3.152
5.566
9.170
10.32
20.23
x
x
x
Agency Approvals
PS
E
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Notes:
- l
2
t calculated at 8ms.
- Resistance is measured at 10% of rated current, 25ºC
451/453 Series
58
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/451.html
or /453.html for current information.
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