Axial lead & cartridge fuses – Littelfuse 312 Series User Manual
Page 2
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Axial Lead & Cartridge Fuses
3AG > Fast Acting > 312/318 Series
Amp
Code
Ampere
Rating (A)
Voltage
Rating
(V)
Interrupting
Rating
Nominal
Cold
Resistance
(Ohms)
Nominal
melting
I
2
t (A
2
sec)
Agency Approvals
PS
E
.062
0.062
250
35A@250Vac
10KA@125Vac
24.7000
0.000249
x
x
x
.100
0.1
250
11.2800
0.00102
x
x
x
.125
0.125
250
7.1450
0.00289
x
x
x
.150
0.15
250
5.1300
0.00550
x
x
x
.175
0.175
250
3.8750
0.00960
x
x
x
.187
0.187
250
3.4200
0.0128
x
x
x
.200
0.2
250
3.0200
0.0165
x
x
x
.250
0.25
250
2.0100
0.0355
x
x
x
.300
0.3
250
1.4050
0.0689
x
x
x
.375
0.375
250
0.8250
0.185
x
x
x
.500
0.5
250
0.4980
0.483
x
x
x
.600
.6
250
0.3620
0.880
x
x
x
.750
0.75
250
0.2445
1.84
x
x
x
001.
1
250
0.1900
0.760
x
x
x
x
x
1.25
1.25
250
100A@250Vac
10KA@125Vac
0.1385
1.45
x
x
x
x
x
01.5
1.5
250
0.1036
2.35
x
x
x
x
01.6
1.6
250
0.0934
2.80
x
x
x
x
x
1.75
1.75
250
0.0856
3.60
x
x
x
x
01.8
1.8
250
0.0825
3.85
x
x
x
x
002.
2
250
0.0704
5.20
x
x
x
x
x
2.25
2.25
250
0.0594
7.20
x
x
x
x
x
02.5
2.5
250
0.0513
9.54
x
x
x
x
x
003.
3
250
0.0427
14.0
x
x
x
x
x
004.
4
250
200A@250Vac
10KA@125Vac
0.0293
28.5
x
x
x
x
x
005.
5
250
0.0224
50.0
x
x
x
x
x
006.
6
250
0.0178
118.0
x
x
x
x
x
007.
7
250
0.0146
118.0
x
x
x
x
x
008.
8
250
0.0122
166.0
x
x
x
x
x
010.
10
250
0.0093
298.0
x
x
x
x
x
012.
*
12
32
300A@32 Vac
0.0072
234.6
x
x
**
x
015.
*
15
32
0.0052
490.5
x
x
**
x
020.
*
20
32
0.0035
1029
x
x
**
x
025.
*
25
32
0.0024
2041
x
x
**
x
030.
*
30
32
0.0019
3717
x
x
**
x
035.
35
32
0.0013
7531
NOTES:
** For 318 Series 12A to 30A, the agency approval is only cURus.
Electrical Characteristic Specifications by Item