Glass Body
Axial Lead and Cartridge Fuses
3AG
Fast-Acting Type 312/318 Series
290
w w w . l i t t e l f u s e . c o m
1000
100
10
1
0.1
0.01
1
10
100
0.01
0.1
.031 A
.062 A
.125 A
.250 A
.375 A .500 A
.750 A 1 A 1.5 A
2 A 2.5 A 3 A 4 A 5 A 6 A 7 A 8 A 10 A
0.005
TIME IN SECONDS
CURRENT IN AMPERES
Cartridge
Axial Lead
Nominal
Nominal
Catalog
Catalog
Ampere
Voltage
Resistance
Melting I
2
t
Number
Number
Rating
Rating
Cold Ohms
A
2
Sec.
312.031
318.031
1/32
250
23.3
0.0000300
312.062
318.062
1/16
250
24.5
0.000249
312.100
318.100
1/10
250
11.2
0.00102
312.125
318.125
1/8
250
7.10
0.00289
312.150
318.150
15/100
250
5.10
0.00550
312.175
318.175
.175
250
3.85
0.00960
312.187
318.187
3/16
250
3.40
0.0128
312.200
318.200
2/10
250
3.00
0.0165
312.250
318.250
1/4
250
2.00
0.0355
312.300
318.300
3/10
250
1.40
0.0689
312.375
318.375
3/8
250
0.820
0.185
312.500
318.500
1/2
250
0.495
0.483
312.600
318.600
6/10
250
0.360
0.880
312.750
318.750
3/4
250
0.243
1.84
312 001
318 001
1
250
0.189
0.760
312 1.25
318 1.25
1
1
/
4
250
0.138
1.45
312 01.5
318 01.5
1
1
/
2
250
0.103
2.35
312 01.6
318 01.6
1
6
/
10
250
0.0930
2.80
312 1.75
318 1.75
1
3
/
4
250
0.0850
3.60
312 01.8
318 01.8
1
8
/
10
250
0.0820
3.85
312 002
318 002
2
250
0.0700
5.20
312 2.25
318 2.25
2
1
/
4
250
0.0590
7.20
312 02.5
318 02.5
2
1
/
2
250
0.0510
9.54
312 003
318 003
3
250
0.0424
14.0
312 004
318 004
4
250
0.0291
28.5
312 005
318 005
5
250
0.0223
50.0
312 006
318 006
6
250
0.0177
81.1
312 007
318 007
7
250
0.0145
118.0
312 008
318 008
8
250
0.0121
166.0
312 010
318 010
10
250
0.00925
298.0
312 012
--
12
32
0.0071
--
312 015
--
15
32
0.0052
--
312 020
--
20
32
0.0034
--
312 025
--
25
32
0.0024
--
312 030
--
30
32
0.0019
--
312 035
--
35
32
0.0013
--
Average Time Current Curves
312 000 Series
318 000 Series
6.35
(.25")
32.385
(1.275")
31.75
(1.25")
6.985 (.275")
0.813
(.032")
38.1
(1.50") TYP.
Axial Lead Material: Solder coated copper.
A standard for cost-effective reliability and performance in circuit protec-
tion, the 3AG fuse satisfies a broad range of application requirements.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Ampere
Opening
Rating
Rating
Time
110%
1/3235
4 hours, Minimum
135%
1/3235
1 hour, Maximum
1/3210
5 sec., Maximum
200%
1230
10 sec., Maximum
35
20 sec., Maximum
AGENCY APPROVALS:
Listed by Underwriters Laboratories and
Certified by CSA through 30 amperes.
1/10010 amperes listed to UL 248-14 (UL 198-G)
1230 amperes listed to UL 275.
AGENCY FILE NUMBERS:
UL E10480, CSA LR 29862.
FUSES TO MIL SPEC:
See F02A cartridge type in Military Section.
INTERUPTING RATING:
10,000A @ 125VAC
35A @ 250VAC
UL
QPL
ORDERING INFORMATION:
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