Cartridge and Axial Lead Fuses
3AG > Fast Acting > 312/318 Series
Electrical Characteristic Specifications by Item
Max
Nominal
Cold
Resistance
(Ohms)
Agency Approvals
Nominal
Melting
Amp
Ampere Voltage
Interrupting
Rating
PS
E
U
Code Rating (A) Rating
(V)
®
® L
I2t (A2 sec)
.10*
.031*
.062
.100
.125
.150
.175
.187
.200
.250
.300
.375
.500
.600
.750
001
0.01
0.031
0.062
0.1
0.125
0.15
0.175
0.187
0.2
0.25
0.3
0.375
0.5
.6
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
250
32
177.4000
23.6500
24.7000
11.2800
7.1450
NA
0.0000300
0.000249
0.00102
0.00289
0.00550
0.00960
0.0128
0.0165
0.0355
0.0689
0.185
0.483
0.880
1.84
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
5.1300
3.8750
3.4200
3.0200
2.0100
1.4050
0.8250
0.4980
0.3620
0.2445
0.1900
0.1385
0.1036
0.0934
0.0856
0.0825
0.0704
0.0594
0.0513
0.0427
0.0293
0.0224
0.0178
0.0146
0.0122
0.0093
0.0072
0.0052
0.0035
0.0024
0.0019
0.0013
x
x
x
x
10mA ~ 1A
35A@250Vac
10KA@125Vac
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0.75
1
x
x
0.760
1.45
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1.25
01.5
01.6
1.75
01.8
002
1.25
1.5
x
x
2.35
x
x
1.6
2.80
x
x
x
1.75
1.8
3.60
x
x
1.25A ~ 3A
100A@250Vac
10KA@125Vac
3.85
x
x
2
5.20
x
x
x
x
x
x
x
x
x
x
x
x
2.25
02.5
003
2.25
2.5
3
7.20
x
x
9.54
x
x
14.0
x
x
004
4
28.5
x
x
005
5
50.0
x
x
4A ~ 10A
200A@250Vac
10KA@125Vac
006
6
118.0
118.0
166.0
298.0
234.6
490.5
1029
x
x
007
7
x
x
008
8
x
x
010
10
x
x
012
12
x**
x**
x**
x**
x**
x***
x***
x***
x***
x***
x**
x**
x**
x**
x**
015
15
32
12A ~ 35A
300A@32 Vac
020
20
32
025
25
32
2041
030
30
32
3717
035
35
32
7531
NOTES:
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** 312 Series only. Refer to Agency Approvals section of this document.
*** 318 Series only. Refer to Agency Approvals section of this document.
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com/series/312.html or 318.html for current information.
312/318 Series
154
Revised: July 16, 2008
Please refer to www.littelfuse com
LITTELFUSE [ LITTELFUSE ]
