Axial Lead & Cartridge Fuses
PICO
®
ll > Very Fast-Acting > 251/253 Series
Electrical Specifications by Item
Nom
Max
Nominal
Ampere
Nominal
Ordering Ordering
Voltage
Amp
Voltage Interrupting
Cold
Rating
Melting
Number Number
Drop
Code
Rating
Rating
Resistance
2
(A)
I t (A
2
sec)
(Std.)
(Mil.)
(V)
(V)
(Ohms)
.062
.125
.250
.375
.500
.630
.750
1.00
1.25
1.50
2.00
2.50
3.00
3.50
4.00
5.00
7
.00
10.0
12.0
15.0
Note:
Agency Approvals
PS
E
TUV
QPL
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
.062
.125
.250
.375
.500
.630
.750
001.
1.25
01.5
002.
02.5
003.
03.5
004.
005.
007
.
010.
012.
015.
251.062
251.125
251.250
251.375
251.500
251.630
251.750
251001.
2511.25
25101.5
251002.
25102.5
251003.
25103.5
251004.
251005.
251007
.
251010.
251012.
251015.
253.062
253.125
253.250
253.375
253.500
253.750
253001.
25301.5
253002.
253003.
253004.
253005.
253007
.
253010.
253015.
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
32
32
300 A @ rated
50 A @ rated
For CCC 7A:
70 A @ rated
For CCC 10A:
100 A @ rated
7
.000
1.700
0.665
0.395
0.280
0.205
0.175
0.128
0.100
0.0823
0.0473
0.0360
0.0290
0.0240
0.0204
0.0155
0.0105
0.00705
0.0055
0.00446
0.000113
0.00174
0.0116
0.0296
0.0598
0.094
0.153
0.256
0.390
0.587
0.405
0.721
1.19
1.58
2.45
4.14
10.4
25.5
45.2
68.8
1.4
0.285
0.24
0.215
0.2165
0.188
0.176
0.194
0.2
0.21
0.141
0.132
0.131
0.1205
0.114
0.11
0.102
0.1
0.0878
0.071
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251/253 Series
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/251.html
or /253.html for current information.