Axial Lead and Cartridge Fuses
Glass Body
U
®
®L
3AG Fast-Acting Type 312/318 Series
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
Rating
Ampere
Rating
Opening
Time
100%
1/32–35
1/32–35
1/32–10
12–30
35
4 hours, Minimum
1 hour, Maximum
5 sec., Maximum
10 sec., Maximum
20 sec., Maximum
135%
200%
AGENCY APPROVALS: Listed by Underwriters Laboratories and
Certified by CSA through 30 amperes.
1/100–10 amperes listed to UL 248-14 (UL 198-G)
12–30 amperes listed to UL 275.
312 000 Series
318 000 Series
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.
0.813
(.032")
6.985 (.275")
INTERUPTING RATING:
10,000A @ 125VAC
35A @ 250VAC
6.35
(.25")
32.385
(1.275")
31.75
(1.25")
38.1
(1.50") TYP.
ORDERING INFORMATION:
Axial Lead Material: Solder coated copper.
Cartridge
Catalog
Number
Axial Lead
Catalog
Number
Nominal
Resistance
Cold Ohms
Nominal
Melting I2t
A2 Sec.
Ampere Voltage
Rating
Rating
312.031
312.062
312.100
312.125
318.031
318.062
318.100
318.125
1/32
1/16
1/10
1/8
250
250
250
250
23.3
24.5
11.2
7.10
0.0000300
0.000249
0.00102
Average Time Current Curves
0.00289
312.150
312.175
312.187
312.200
312.250
318.150
318.175
318.187
318.200
318.250
15/100
.175
3/16
2/10
1/4
250
250
250
250
250
5.10
3.85
3.40
3.00
2.00
0.00550
0.00960
0.0128
0.0165
0.0355
11
1000
100
10
312.300
312.375
312.500
312.600
312.750
318.300
318.375
318.500
318.600
318.750
3/10
3/8
1/2
6/10
3/4
250
250
250
250
250
1.40
0.0689
0.185
0.483
0.880
1.84
0.820
0.495
0.360
0.243
312 001
312 1.25
312 01.5
312 01.6
312 1.75
318 001
318 1.25
318 01.5
318 01.6
318 1.75
1
250
250
250
250
250
0.189
0.138
0.103
0.0930
0.0850
0.760
1.45
2.35
2.80
3.60
1
4
1 /
1
2
1 /
6
10
1 /
3
4
1 /
8
10
312 01.8
312 002
312 2.25
312 02.5
312 003
318 01.8
318 002
318 2.25
318 02.5
318 003
1 /
250
250
250
250
250
0.0820
0.0700
0.0590
0.0510
0.0424
3.85
5.20
7.20
9.54
14.0
2
1
4
2 /
1
2
2 /
1
3
312 004
312 005
312 006
312 007
312 008
318 004
318 005
318 006
318 007
318 008
4
5
6
7
8
250
250
250
250
250
0.0291
0.0223
0.0177
0.0145
0.0121
28.5
50.0
81.1
118.0
166.0
0.1
0.01
312 010
312 012
312 015
312 020
312 025
318 010
10
12
15
20
25
250
32
32
32
32
0.00925
0.0071
0.0052
0.0034
0.0024
298.0
—
—
—
—
—
—
—
—
0.005 0.01
0.1
1
10
100
312 030
312 035
—
—
30
35
32
32
0.0019
0.0013
—
—
CURRENT IN AMPERES
401
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