31 mA Fuses 82

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Part RoHS Manufacturer Circuit Protection Type Mounting Feature Rated AC Voltage Rated DC Voltage Rated Current Terminal Shape Nominal Joule Integral Minimum Operating Temperature Terminal Finish Rated Breaking Capacity Manufacturer Series Trip Time/Delay Additional Features Pre Arcing Rating (A2/s) Packing Method Body Length/Diameter Body Width Fuse Class JESD-609 Code Rated Voltage Resistance Minimum Pre Arcing Time Fuse Size Built-in Features Dimensions Body Height Reference Standard Maximum Operating Temperature Blow Characteristic

0268.031V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

-55 °C (-67 °F)

Gold

10 kA

4 h

Bulk

0.235 in (5.97 mm)

e4

125 V

Micro

0.235 x 0.29 in (5.97 x 7.37 mm)

0.29 in (7.37 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

0325.031MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

11 mJ

-55 °C (-67 °F)

Tin

100 A

5 s

0.011

Bulk

0.275 in (6.985 mm)

e3

250 V

3AB

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE

125 °C (257 °F)

Time Delay

273.031

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

31 mA

Tab/Blade

10 μJ

-55 °C (-67 °F)

10 kA

5 s

Pre Arcing Time: Open within 5 s at 200% Rated Current

0.25 in (6.35 mm)

125 V

Micro

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA; UL

85 °C (185 °F)

Very Fast

3250.031MVXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

11 mJ

-55 °C (-67 °F)

Matte Tin

100 A

Bulk

0.275 in (6.99 mm)

e3

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE

125 °C (257 °F)

Time Lag

272.031

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

31 mA

Tab/Blade

10 μJ

-55 °C (-67 °F)

Tin Lead

10 kA

Rated Breaking Capacity at 125 VDC: 10000 A

0.235 in (5.97 mm)

e0

0.235 x 0.287 in (5.97 x 7.3 mm)

0.287 in (7.3 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0325.031MX52LP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

11 mJ

-55 °C (-67 °F)

Tin

4 h

0.011

0.275 in (6.985 mm)

e3

250 V

3AB

0.275 x 1.288 in (6.985 x 32.72 mm)

1.288 in (32.72 mm)

CE

125 °C (257 °F)

Time Lag

274.031

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

31 mA

Tab/Blade

10 μJ

-55 °C (-67 °F)

10 kA

Rated Breaking Capacity at 125 VDC: 10000 A

0.25 in (6.35 mm)

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

0279.031H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

10 μJ

-55 °C (-67 °F)

Tin

10 kA

4 h

Bulk

0.25 in (6.35 mm)

e3

125 V

Micro

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

0312.031MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

30 μJ

-55 °C (-67 °F)

Tin

35 A

312

Bulk

0.25 in (6.35 mm)

e3

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

0272.031V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

8.1 μJ

-55 °C (-67 °F)

Tin

10 kA

4 h

Pre-Arcing Time: Open within 5 s at 200% Rated Current

Bulk

0.235 in (5.97 mm)

e3

125 V

Micro

0.235 x 0.287 in (5.97 x 7.3 mm)

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

315.031

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

31 mA

Pin Wire

3.03 mJ

Tin/Lead

10 kA

5 s

Pre Arcing Time: Open within 5 s at 200% Rated Current

0.275 in (6.985 mm)

e0

250 V

3AG

0.275 x 1.275 in (6.985 x 32.385 mm)

1.275 in (32.385 mm)

CE; CSA; PSE; UL

Slow

278.031

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

10 μJ

-55 °C (-67 °F)

Tin Lead

10 kA

Rated Breaking Capacity at 125 VDC: 10000 A

0.235 in (5.97 mm)

e0

0.235 x 0.287 in (5.97 x 7.3 mm)

0.287 in (7.3 mm)

CSA; UL

125 °C (257 °F)

Very Fast

3260.031MMXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

11 mJ

-55 °C (-67 °F)

Matte Tin

100 A

Bulk

0.25 in (6.35 mm)

e3

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE

125 °C (257 °F)

Time Lag

262.031

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

31 mA

Tab/Blade

-55 °C (-67 °F)

Gold

10 kA

Rated Breaking Capacity at 125 VDC: 10000 A

0.235 in (5.97 mm)

e4

0.235 x 0.29 in (5.97 x 7.37 mm)

0.29 in (7.37 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0313.031VXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

3.03 mJ

-55 °C (-67 °F)

Matte Tin

35 A

313

Bulk

0.25 in (6.35 mm)

e3

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; UL

125 °C (257 °F)

Time Lag

0273.031V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

-55 °C (-67 °F)

Tin

100 kA

4 h

Bulk

0.25 in (6.35 mm)

e3

125 V

Micro

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA, UL

85 °C (185 °F)

Very Fast

0313.031HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

3.03 mJ

-55 °C (-67 °F)

Nickel

35 A

4 h

0.003

Bulk

0.25 in (6.35 mm)

Supplemental

250 V

3AG

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; UL

125 °C (257 °F)

Time Lag

02720.031H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Wire

8.1 μJ

-55 °C (-67 °F)

10 kA

5 s

Bulk

0.235 in (5.97 mm)

125 V

Micro

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

02740.031V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

8.1 μJ

-55 °C (-67 °F)

10 kA

5 s

Bulk

0.25 in (6.35 mm)

125 V

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

Very Fast

325.031P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

11 mJ

Matte Tin

100 A

325P

0.275 in (6.99 mm)

e3

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; PSE; UL

Slow

0313.031MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

3.03 mJ

-60 °C (-76 °F)

Nickel

35 A

5 s

0.003

Bulk

0.25 in (6.35 mm)

Supplemental

250 V

3AG

1.25 x 0.25 in (31.75 x 6.35 mm)

1.25 in (31.75 mm)

CE; CSA; UL

125 °C (257 °F)

Time Lag

02740.031H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Wire

8.1 μJ

-55 °C (-67 °F)

10 kA

5 s

Bulk

0.25 in (6.35 mm)

125 V

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

318.031

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

31 mA

Pin Wire

30 μJ

Tin

35 A

318

0.276 in (7 mm)

e3

0.276 x 1.288 in (7 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; UL

Fast

325.031

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

11 mJ

Tin/Lead

0.275 in (6.99 mm)

e0

0.275 x 1.275 in (6.99 x 32.39 mm)

1.275 in (32.39 mm)

CSA

Slow

0273.031H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

10 μJ

-55 °C (-67 °F)

Tin

10 kA

4 h

Bulk

0.25 in (6.35 mm)

e3

125 V

Micro

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

279.031

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

10 μJ

-55 °C (-67 °F)

10 kA

5 s

Pre Arcing Time: Open within 5 s at 200% Rated Current

0.25 in (6.35 mm)

125 V

Micro

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA; UL

85 °C (185 °F)

Very Fast

3260.031MHXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

11 mJ

-55 °C (-67 °F)

Matte Tin

100 A

Bulk

0.25 in (6.35 mm)

e3

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE

125 °C (257 °F)

Time Lag

02790.031H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Wire

8.1 μJ

-55 °C (-67 °F)

10 kA

5 s

Bulk

0.25 in (6.35 mm)

125 V

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

0326.031MXCCP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

31 mA

End Cap

-55 °C (-67 °F)

4 h

0.011

0.25 in (6.35 mm)

250 V

3AB

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE

125 °C (257 °F)

Time Lag

0278.031H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

10 μJ

-55 °C (-67 °F)

Tin

10 kA

4 h

Bulk

0.235 in (5.97 mm)

e3

125 V

Micro

0.235 x 0.287 in (5.97 x 7.3 mm)

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

0279.031V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

-55 °C (-67 °F)

100 kA

4 h

Bulk

0.25 in (6.35 mm)

125 V

Micro

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA, UL

85 °C (185 °F)

Very Fast

0326.031VXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

31 mA

End Cap

-55 °C (-67 °F)

Nickel

4 h

0.011

0.25 in (6.35 mm)

250 V

3AB

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE

125 °C (257 °F)

Time Lag

3250.031MHXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

11 mJ

-55 °C (-67 °F)

Matte Tin

100 A

Bulk

0.275 in (6.99 mm)

e3

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE

125 °C (257 °F)

Time Lag

0318.031HX

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

30 μJ

-55 °C (-67 °F)

Tin Lead

35 A

318

Bulk

0.275 in (6.99 mm)

e0

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

326.031

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

11 mJ

0.25 in (6.35 mm)

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CSA

Slow

0262.031V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Pin Wire

-55 °C (-67 °F)

Gold

10 kA

4 h

Bulk

0.235 in (5.97 mm)

e4

125 V

Micro

0.235 x 0.29 in (5.97 x 7.37 mm)

0.29 in (7.37 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

0318.031P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

30 μJ

-55 °C (-67 °F)

Tin

35 A

318

0.275 in (6.99 mm)

e3

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

0318.031MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

30 μJ

-55 °C (-67 °F)

Tin

35 A

318

Bulk

0.275 in (6.99 mm)

e3

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

0326.031MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

11 mJ

-55 °C (-67 °F)

Nickel

100 A

5 s

0.011

Bulk

0.25 in (6.35 mm)

250 V

3AB

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE

125 °C (257 °F)

Time Delay

0312.031HX

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

30 μJ

-55 °C (-67 °F)

Nickel

35 A

312

Bulk

0.25 in (6.35 mm)

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

272.031V

Littelfuse

Electric Fuse

31 mA

Pin Wire

-55 °C (-67 °F)

10 kA

4 h

0.235 in (5.97 mm)

125 V

16 Ω

Micro

0.235 x 0.287 in (5.97 x 7.3 mm)

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

F03B250V1/32AS

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

Silver

35 A

0.25 in (6.35 mm)

e4

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

MIL-PRF-15160/3

3260.031MVXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

31 mA

End Cap

11 mJ

-55 °C (-67 °F)

Matte Tin

100 A

Bulk

0.25 in (6.35 mm)

e3

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE

125 °C (257 °F)

Time Lag

02780.031H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

31 mA

Wire

8.1 μJ

-55 °C (-67 °F)

10 kA

5 s

Bulk

0.235 in (5.97 mm)

125 V

Micro

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

269.031

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

31 mA

Tab/Blade

-55 °C (-67 °F)

Gold

10 kA

Rated Breaking Capacity at 125 VDC: 10000 A

0.235 in (5.97 mm)

e4

0.235 x 0.29 in (5.97 x 7.37 mm)

0.29 in (7.37 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

0318.031MX

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

30 μJ

-55 °C (-67 °F)

Tin Lead

35 A

318

Bulk

0.275 in (6.99 mm)

e0

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

0318.031HXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

30 μJ

-55 °C (-67 °F)

Tin

35 A

318

Bulk

0.275 in (6.99 mm)

e3

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

0318.031VX

Littelfuse

Electric Fuse

Through Hole Mount

250 V

31 mA

Pin Wire

30 μJ

-55 °C (-67 °F)

Tin Lead

35 A

318

Bulk

0.275 in (6.99 mm)

e0

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

Fuses

A fuse is an electrical safety device that is designed to protect an electrical circuit from damage caused by overcurrent. Fuses are commonly used in residential, commercial, and industrial electrical systems, and they are an important safety device that helps prevent electrical fires, equipment damage, and personal injury.

A fuse typically consists of a metal wire or filament that is enclosed in a fuse body, which is designed to protect the wire from damage. The fuse is connected in series with the electrical circuit, and when the current flowing through the circuit exceeds a preset level, the wire in the fuse will melt or blow, which opens the circuit and prevents further damage to the electrical system.

Fuses are available in a variety of types and sizes, and they can be classified based on their current rating, voltage rating, and speed of operation. Some common types of fuses include cartridge fuses, blade fuses, and plug fuses.

In addition to protecting electrical systems from overcurrent, fuses can also be used to protect electrical equipment and machinery from damage caused by short circuits or other types of electrical faults. They are a cost-effective and reliable method of electrical protection, and they are widely used in a variety of electrical applications.