Littelfuse 322 User Manual

Axial Lead & Cartridge Fuses

3AB > Very Fast-Acting > 322/332 Series

322/332 Series Lead-free 3AB, Very Fast-acting Fuse

Description

The 3AB Very Fast-Acting Fuse for protection of Silicon
Controlled Rectifiers and similar solid-state devices.

Features

PS

E

• InaccordancewithUL

Standard 248-14

• RoHScompliantand

Lead-free

• Availableincartridge

format only

Agency Approvals

Applications

Used as supplementary protection in appliance or

Agency Agency File Number Ampere Range

utilization equipment to provide individual protection for
components or internal circuits.

E10480

12A - 30A

Electrical Characteristics for Series

E10480 1A - 10A

% of Ampere

PS

E

NBK080306-

JP1021A/B

1A - 10A

1A - 30A

Rating

100% 1 – 30 4 hours, Minimum

250%

Ampere Rating Opening Time

1 – 10 .2 second, Maximum

12 – 30 1 sec.ond, Maximum.

Electrical Characteristic Specifications by Item

Amp Code

0 01. 1 250

1.25 1.25 250 0.0804 0.156 x x x

002. 2 250 0.0416 0.560 x x x

003. 3 250 0.0245 1.890 x x x

004. 4 250 0.0179 3.360 x x x

005. 5 250 0.0128 6.250 x x x

006. 6 250 0.0117 8.208 x x x

0 0 7. 7 250 0.0108 10.58 x x x

008. 8 250 0.0088 16.45 x x x

009. 9 250 0.0077 20.66 x x x

010. 10 250 0.0073 24.0 x x x

012. 12 65

015. 15 65 0.0043 90.0 x x

020. 20 65 0.0034 192.0 x x

025.* 25 65 0.0029 325.0 x x

030.* 30 65 0.0023 540.0 x x

* Ratings from 1A to 10A are available for 332 series
* Ratings from 12A to 30A are available for 322 series, these ratings are RoHS compliant version.

Ampere

Rating

(A)

Voltage

Rating

(V)

Interrupting

Rating

100A@250Vac
100A@125Vdc

200A@72Vdc

200A@65Vac

1000A@65Vdc

Nominal Cold

Resistance

(Ohms)

0.0927 0.100 x x x

0.0515 60.0 x x

Nominal

Melting

2

t (A2 sec)

I

PS

E

Agency Approvals

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13

Axial Lead & Cartridge Fuses

1

000

1/8A

1/4A

3/8A

1/2A

3/4A

TIME IN SECONDS

CURRENT IN AMPERES

3AB > Very Fast-Acting > 322/332 Series

Average Time Current CurvesTemperature Rerating Curve

000

100

10

1

0.1

0.01

0.1 110100 1

1A2A3A4A5A6A7A8A10A

12A

15A

20A

25A

30A

Product CharacteristicsProduct Characteristics

Materials

Terminal Strength

Solderability

Product Marking

Body: Ceramic
Cap: Nickel–plated brass

MIL-STD-202G, Method 211A, Test
Condition A

Reference IEC 60127 Second Edition
2003-01 Annex A

Cap1: Brand logo, current and voltage
ratings
Cap2: Series and agency approval
marks

Operating
Temperature

Thermal Shock

–55ºC to +125ºC

MIL-STD-202G, Method 107G, Test
Condition B: (5 cycles -65°C to +125°C)

Vibration MIL-STD-202G, Method 201 A

MIL-STD-202G, Method 103B, Test

Humidity

Condition A: High RH (95%) and Elevated
temperature (40°C) for 240 hours

Salt Spray

MIL- STD-202G, Method 101D, Test
Condition B

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13