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 1000.01 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.
312.031P 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 1
1
/4 250 0.138 1.45
312 01.5P 318 01.5P 1
1
/2 250 0.103 2.35
312 01.6P 318 01.6P 1
6
/10 250 0.0930 2.80
312 1.75P 318 1.75P 1
3
/4 250 0.0850 3.60
312 01.8P 318 01.8P 1
8
/10 250 0.0820 3.85
312 002P 318 002P 2 250 0.0700 5.20
312 2.25P 318 2.25P 2
1
/4 250 0.0590 7.20
312 02.5P 318 02.5P 2
1
/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 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:
®
U
L ®
Pb
RoHS