Special
Axial Lead and Cartridge Fuses
3AB Very Fast-Acting Fuse 322 Series
303
www.littelfuse.com
8
AXIAL LEAD AND
CAR
TRIDGE FUSES
ELECTRICAL CHARACTERISTICS:
% of Ampere Ampere Opening
Rating Rating Time
100% 1–30 4 hours, Minimum
250%
1–10 .2 second, Maximum
12–30 1 second, Maximum
AGENCY APPROVALS: Recognized under the Components Program
of Underwriters Laboratories from
1 through 10 amperes at 250 VAC/65 VDC, 12 through 30 amperes at 65
VAC/VDC.
INTERUPTING RATINGS:
1-10A 10,000A @ 125 VAC
100A @ 250 VAC
12-30A 200A @ 65 VAC
ORDERING INFORMATION:
Cartridge Nominal
Catalog Ampere Voltage Resistance
Number Rating Rating Cold Ohms
322 001 1 250 0.26
322 1.25 1
1
/4 250 0.175
322 002 2 250 0.132
322 003 3 250 0.063
322 004 4 250 0.044
322 005 5 250 0.035
322 006 6 250 0.027
322 007 7 250 0.022
322 008 8 250 0.019
322 009 9 250 0.016
322 010 10 250 0.0135
322 012 12 65 0.0052
322 015 15 65 0.0043
322 020 20 65 0.0034
322 025 25 65 0.0029
322 030 30 65 0.0023
ELECTRICAL CHARACTERISTICS:
% of Ampere Opening
Rating Time
110% 4 hours, Minimum
135% 1 hour, Maximum
200% 10 seconds, Maximum
AGENCY APPROVALS: Listed by Underwriters Laboratories.
DESIGN STANDARDS: UL Standard 275. SAE (Society of
Automotive Engineers) J554.
ORDERING INFORMATION:
Nominal
Catalog Ampere Voltage Resistance Fuse
Number Rating Rating Cold Ohms Length
307 004 4 32 0.0220 15.875 (
5
/8")
307 006 6 32 0.0144 19.05 (
3
/4")
307 07.5 7
1
/2 32 0.0113 22.23 (
7
/8")
307 009 9 32 0.00945 22.23 (
7
/8")
307 014 14 32 0.0055 26.99 (1
1
/16")
307 020 20 32 0.0034 31.75 (1
1
/4")
307 030 30 32 0.0021 36.51 (1
7
/16")
LOW VOLTAGE
SFE Fast-Acting Type 307 Series ®
U
L
For protection of silicon controlled rectifiers and similar solid-state devices.
307 000 Series
6.35 (.25")
SEE
CHART
322 000 Series
6.35 (.25")
31.75
(1.25")
®