4 A Fuses 1,332

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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

0325004.VXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

4 A

Pin Wire

-55 °C (-67 °F)

Tin

4 h

9.71

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, CSA, PSE, UL

125 °C (257 °F)

Time Lag

0315004.IDMXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

-55 °C (-67 °F)

Tin

10 kA

Bulk

1.273 in (32.34 mm)

e3

1.273 x 0.275 in (32.34 x 6.98 mm)

0.275 in (6.98 mm)

CE; CSA; KC; PSE; UL

125 °C (257 °F)

Time Lag

0875004.MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

42.45 J

-55 °C (-67 °F)

50 A

4 h

42.45

Bulk

0.142 in (3.6 mm)

250 V

0.142 x 0.394 in (3.6 x 10 mm)

0.394 in (10 mm)

CSA; UL

125 °C (257 °F)

Time Lag

0268004.V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

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

3991400000

Littelfuse

Electric Fuse

Through Hole Mount

65 V

65 V

4 A

Pin Wire

75 J

-40 °C (-40 °F)

Matte Tin

50 A

Rated Breaking Capacity at 65 VDC: 50 A

75

Ammo Pack; Tape And Reel

0.335 in (8.5 mm)

0.157 in (4 mm)

e3

65 V

TE5

0.335 x 0.157 x 0.315 in (8.5 x 4 x 8 mm)

0.315 in (8 mm)

UL

85 °C (185 °F)

Time Lag

0202004.URG

Littelfuse

Electric Fuse

Surface Mount

250 V

4 A

Gull Wing

3 J

-55 °C (-67 °F)

Tin/Lead

50 A

2 s

3

Tape And Reel

0.372 in (9.45 mm)

0.25 in (6.35 mm)

e0

250 V

0.372 x 0.25 x 0.165 in (9.45 x 6.35 x 4.19 mm)

0.165 in (4.19 mm)

CSA, UL

125 °C (257 °F)

Fast

0257004LXN

Littelfuse

Electric Fuse

Inline/Holder

32 V

4 A

Tab/Blade

14 J

-40 °C (-40 °F)

Tin

1 kA

0257

Rated Breaking Capacity at 32 VDC: 1000 A

Bulk

0.75 in (19.05 mm)

0.2 in (5.08 mm)

e3

0.75 x 0.2 x 0.48 in (19.05 x 5.08 x 12.19 mm)

0.48 in (12.19 mm)

UL

105 °C (221 °F)

235004XE

Littelfuse

Electric Fuse

Through Hole Mount

125 V

4 A

Pin Wire

17.6 J

10 kA

0.236 in (6 mm)

0.236 x 0.886 in (6 x 22.5 mm)

0.886 in (22.5 mm)

CSA; KTL; METI; PSE; UL

Fast

0230004.MXEP

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

148 J

-55 °C (-67 °F)

Matte Tin

400 A

Bulk

0.185 in (4.7 mm)

e3

0.185 x 0.57 in (4.7 x 14.48 mm)

0.57 in (14.48 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

266004

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

-55 °C (-67 °F)

Gold

50 A

4 h

Rated Breaking Capacity at 125 VDC: 300 A

0.28 in (7.11 mm)

0.093 in (2.36 mm)

Supplemental

e4

125 V

23 mΩ

Pico

0.28 x 0.093 x 0.093 in (7.11 x 2.36 x 2.36 mm)

0.093 in (2.36 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0318004.HXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

28.5 J

-55 °C (-67 °F)

Matte Tin

200 A

5 s

Bulk

0.275 in (6.99 mm)

e3

3AG

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; KC; PSE; UL

125 °C (257 °F)

Fast

0297004.L

Littelfuse

Electric Fuse

Inline/Holder

32 V

4 A

Tab/Blade

31 J

-40 °C (-40 °F)

Silver

1 kA

30 ms

17

0.429 in (10.9 mm)

0.15 in (3.8 mm)

e4

32 V

Mini

0.429 x 0.15 x 0.346 in (10.9 x 3.8 x 8.8 mm)

0.346 in (8.8 mm)

UL

125 °C (257 °F)

0253004.HXT3L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

2.45 J

-55 °C (-67 °F)

Pure Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

0.11 in (2.8 mm)

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CSA; PSE; QPL; TUV; UL

125 °C (257 °F)

Very Fast

0251004.NAT1

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

2.45 J

-55 °C (-67 °F)

Pure Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A, Pre Arcing Time: Open within 4 ms at 1000% Rated Current

Ammo Pack

0.11 in (2.8 mm)

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CCC; CSA; PSE; QPL; TUV; UL

125 °C (257 °F)

Very Fast

1206SFP400F/32

Littelfuse

Electric Fuse

Surface Mount

32 V

4 A

Wraparound

2.74 J

50 A

0.134 in (3.4 mm)

0.071 in (1.8 mm)

200 µs

1206

0.046 in (1.17 mm)

0471004.PAT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

10.6 J

-55 °C (-67 °F)

Tin

50 A

Ammo Pack

0.11 in (2.8 mm)

e3

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

PSE; UL

125 °C (257 °F)

Time Lag

FCD121400TP

Littelfuse

Electric Fuse

Surface Mount

32 V

4 A

Wraparound

500 mJ

-55 °C (-67 °F)

Tin

50 A

FCD12

Tape And Reel

0.126 in (3.2 mm)

0.063 in (1.6 mm)

e3

0.126 x 0.063 x 0.024 in (3.2 x 1.6 x 0.6 mm)

0.024 in (0.6 mm)

IEC; UL

125 °C (257 °F)

Fast

0257004PXPV

Littelfuse

Electric Fuse

Inline/Holder

32 V

4 A

Tab/Blade

14 J

-40 °C (-40 °F)

Tin

1 kA

0257

Rated Breaking Capacity at 32 VDC: 1000 A

Bulk

0.75 in (19.05 mm)

0.2 in (5.08 mm)

e3

0.75 x 0.2 x 0.48 in (19.05 x 5.08 x 12.19 mm)

0.48 in (12.19 mm)

UL

105 °C (221 °F)

ATO4

Littelfuse

Electric Fuse

Inline/Holder

32 V

4 A

Tab/Blade

14 J

-40 °C (-40 °F)

1 kA

100 ms

Box

0.752 in (19.1 mm)

0.201 in (5.1 mm)

0.484 in (12.3 mm)

CSA; UL

125 °C (257 °F)

30314000131

Littelfuse

Electric Fuse

Through Hole Mount

125 V

63 V

4 A

Pin Wire

1 J

-25 °C (-13 °F)

50 A

1 m

Pre Arcing Time: Open within 60 s at 200% Rated Current

Bulk

0.236 in (6 mm)

0.315 in (8 mm)

CSA; UL

70 °C (158 °F)

Fast

30314000001

Littelfuse

Electric Fuse

Through Hole Mount

125 V

63 V

4 A

Pin Wire

1 J

-25 °C (-13 °F)

50 A

1 m

Pre Arcing Time: Open within 60 s at 200% Rated Current

Ammo Pack; Tape

0.236 in (6 mm)

0.315 in (8 mm)

CSA; UL

70 °C (158 °F)

Fast

02134MXB

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

226.505 J

-55 °C (-67 °F)

40 A

20 ms

Pre Arcing Time: Open within 0.02 s at 1000% Rated Current

Bulk

0.205 in (5.2 mm)

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

0507004.MX

Littelfuse

Electric Fuse

Inline/Holder

650 V

4 A

End Cap

8 J

-55 °C (-67 °F)

150 A

2 m

Pre Arcing Time: Open within 120 s at 200% Rated Current

Bulk

0.25 in (6.35 mm)

0.248 x 1.26 in (6.3 x 32 mm)

1.25 in (31.75 mm)

CE; CSA; CUL; UL

125 °C (257 °F)

02134MX

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

226.505 J

-55 °C (-67 °F)

40 A

20 ms

Pre Arcing Time: Open within 0.02 s at 1000% Rated Current

Bulk

0.205 in (5.2 mm)

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

0507004.MXE

Littelfuse

Electric Fuse

Through Hole Mount

650 V

4 A

Pin Wire

8 J

-55 °C (-67 °F)

150 A

2 m

Pre Arcing Time: Open within 120 s at 200% Rated Current

Bulk

0.275 in (6.985 mm)

0.248 x 1.26 in (6.3 x 32 mm)

1.288 in (32.72 mm)

CE; CSA; CUL; UL

125 °C (257 °F)

0SPF004.H

Littelfuse

Electric Fuse

Inline/Holder

1 KV

4 A

End Cap

23 J

20 kA

4 m

Bulk

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; TUV; UL

Fast

KLKD004

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

4 A

End Cap

19 mJ

-55 °C (-67 °F)

100 kA

4 m

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CE; CSA; IEC; UL; VDE

125 °C (257 °F)

Fast

02134MRET1

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

226.505 J

-55 °C (-67 °F)

40 A

20 ms

Pre Arcing Time: Open within 0.02 s at 1000% Rated Current

Tape And Reel

0.205 in (5.2 mm)

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

30314000421

Littelfuse

Electric Fuse

Through Hole Mount

125 V

63 V

4 A

Pin Wire

1 J

-25 °C (-13 °F)

50 A

1 m

Pre Arcing Time: Open within 60 s at 200% Rated Current

Bulk

0.236 in (6 mm)

0.315 in (8 mm)

CSA; UL

70 °C (158 °F)

Fast

02134MXG

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

226.505 J

-55 °C (-67 °F)

40 A

20 ms

Pre Arcing Time: Open within 0.02 s at 1000% Rated Current

Bulk

0.205 in (5.2 mm)

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

0BLF004.T

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

10 kA

2 m

Bulk

0.406 in (10.31 mm)

5AG

1.5 in (38.1 mm)

CE; CSA; UL

Fast

0262004.0V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.235 in (5.97 mm)

Micro

0.29 in (7.37 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0422004.MR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

4 A

Wraparound

3.6 J

-55 °C (-67 °F)

Matte Tin Over Nickel

50 A

5 s

Rated Breaking Capacity at 125 VDC: 100 A

Tape And Reel

0.246 in (6.25 mm)

0.098 in (2.5 mm)

e3

2410

0.088 in (2.24 mm)

CUL; TUV; UL

125 °C (257 °F)

Fast

0224004.HXP

Littelfuse

Electric Fuse

Through Hole Mount

125 V

4 A

Pin Wire

9.4 J

-55 °C (-67 °F)

100 A

1 s

Bulk

0.189 in (4.8 mm)

2AG

0.587 in (14.9 mm)

CE, CSA, PSE, UL

125 °C (257 °F)

Fast

0268004.0V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.235 in (5.97 mm)

Micro

0.29 in (7.37 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0422004.MRA

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

4 A

Wraparound

3.6 J

-55 °C (-67 °F)

50 A

5 s

Rated Breaking Capacity at 125 VDC: 100 A

Tape And Reel

0.246 in (6.25 mm)

0.098 in (2.5 mm)

0.088 in (2.24 mm)

AEC-Q200; CUL; PSE; TUV; UL

125 °C (257 °F)

Fast

FLSR004.TXID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.815 in (20.7 mm)

Indicator

5 in (127 mm)

CSA; UL

Time Delay

FLNR004.T

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

4 A

End Cap

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

Bulk

0.563 in (14.3 mm)

2 in (50.8 mm)

CSA; UL

Time Delay

0278004.0V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

1.38 J

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.235 in (5.97 mm)

Micro

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

0273004.0V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

1.38 J

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.25 in (6.35 mm)

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

0265004.VXT

Littelfuse

Electric Fuse

Through Hole Mount

125 V

4 A

Pin Wire

-55 °C (-67 °F)

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

0.093 in (2.36 mm)

Pico

0.28 in (7.11 mm)

CSA; QPL

125 °C (257 °F)

Very Fast

FLA004

Littelfuse

Electric Fuse

Inline/Holder

125 V

4 A

End Cap

10 kA

12 s

Bulk

0.406 in (10.31 mm)

5AG

Indicator

1.5 in (38.1 mm)

UL

Time Delay

02134.0MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

226.505 J

-55 °C (-67 °F)

40 A

20 ms

Bulk

0.205 in (5.2 mm)

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

0279004.0V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

1.38 J

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.25 in (6.35 mm)

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

0266004.VXT

Littelfuse

Electric Fuse

Through Hole Mount

125 V

4 A

Pin Wire

-55 °C (-67 °F)

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

0.093 in (2.36 mm)

Pico

0.28 in (7.11 mm)

CSA; QPL

125 °C (257 °F)

Very Fast

0272004.0V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

1.38 J

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.235 in (5.97 mm)

Micro

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

0835004.MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

110 J

-55 °C (-67 °F)

1.5 kA

10 ms

Bulk

0.217 in (5.5 mm)

0.197 x 0.787 in (5 x 20 mm)

0.846 in (21.5 mm)

CCC; CUL; KC; PSE; TUV; UL

125 °C (257 °F)

Time Lag

0FLA004.T

Littelfuse

Electric Fuse

Inline/Holder

125 V

4 A

End Cap

10 kA

12 s

Bulk

0.406 in (10.31 mm)

5AG

Indicator

1.5 in (38.1 mm)

UL

Time Delay

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.