Axial Lead and Cartridge Fuses
402
www .littelfuse .com
Glass Body
3AG Fast-Acting Type 312P/318P Series
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
Catalog
Ampere
Voltage
Resistance
Melting I
2 t
Number
Rating
Cold Ohms
A
2 Sec.
312.031P
318.031P
1/32
250
23.3
0.0000300
312.062P
318.062P
1/16
250
24.5
0.000249
312.100P
318.100P
1/10
250
11.2
0.00102
312.125P
318.125P
1/8
250
7.10
0.00289
312.150P
318.150P
15/100
250
5.10
0.00550
312.175P
318.175P
.175
250
3.85
0.00960
312.187P
318.187P
3/16
250
3.40
0.0128
312.200P
318.200P
2/10
250
3.00
0.0165
312.250P
318.250P
1/4
250
2.00
0.0355
312.300P
318.300P
3/10
250
1.40
0.0689
312.375P
318.375P
3/8
250
0.820
0.185
312.500P
318.500P
1/2
250
0.495
0.483
312.600P
318.600P
6/10
250
0.360
0.880
312.750P
318.750P
3/4
250
0.243
1.84
312 001P
318 001P
1
250
0.189
0.760
312 1.25P
318 1.25P
11/4
250
0.138
1.45
312 01.5P
318 01.5P
11/2
250
0.103
2.35
312 01.6P
318 01.6P
16/10
250
0.0930
2.80
312 1.75P
318 1.75P
13/4
250
0.0850
3.60
312 01.8P
318 01.8P
18/10
250
0.0820
3.85
312 002P
318 002P
2
250
0.0700
5.20
312 2.25P
318 2.25P
21/4
250
0.0590
7.20
312 02.5P
318 02.5P
21/2
250
0.0510
9.54
312 003P
318 003P
3
250
0.0424
14.0
312 004P
318 004P
4
250
0.0291
28.5
312 005P
318 005P
5
250
0.0223
50.0
312 006P
318 006P
6
250
0.0177
81.1
312 007P
318 007P
7
250
0.0145
118.0
312 008P
318 008P
8
250
0.0121
166.0
312 010P
318 010P
10
250
0.00925
298.0
312 012P
—
12
32
0.0071
—
312 015P
—
15
32
0.0052
—
312 020P
—
20
32
0.0034
—
312 025P
—
25
32
0.0024
—
312 030P
—
30
32
0.0019
—
312 035P
—
35
32
0.0013
—
Average Time Current Curves
312 000P Series
318 000P 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: Tin 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
Time
100%
1/32–35
4 hours, Minimum
135%
1/32–35
1 hour, Maximum
1/32–10
5 sec., Maximum
200%
12–30
10 sec., Maximum
35
20 sec., Maximum
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.
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.
INTERUPTING RATING:
10,000A @ 125VAC
35A @ 250VAC
ORDERING INFORMATION:
UL
Pb
RoHS