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

239004M

Littelfuse

Electric Fuse

4 A

Pin Wire

-55 °C (-67 °F)

Tin/Lead

10 kA

4 h

270.7

0.787 in (20 mm)

Supplemental

e0

125 V

31.2 mΩ

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

37414000430

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

56 J

-40 °C (-40 °F)

Tin

50 A

1 m

Bulk

0.335 in (8.5 mm)

e3

250 V

TR5

0.335 x 0.315 in (8.5 x 8 mm)

0.315 in (8 mm)

CSA, UL

85 °C (185 °F)

Time Lag

C96949-000

Littelfuse

Electric Fuse

Surface Mount

32 V

4 A

Wraparound

45 A

UL

125 °C (257 °F)

Fast

0433004.DR

Littelfuse

Electric Fuse

Surface Mount

250 V

4 A

End Cap

70.56 J

-55 °C (-67 °F)

Silver

50 A

Tape And Reel

0.398 in (10.1 mm)

e4

0.398 x 0.123 in (10.1 x 3.12 mm)

0.123 in (3.12 mm)

UL

125 °C (257 °F)

Time Lag

0230004.P

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

148 J

-55 °C (-67 °F)

Matte Tin

400 A

0.185 in (4.7 mm)

e3

Indicator

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

0677004DRT4

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

4 A

Pin Wire

95 J

Tin Lead

40 A

Tape And Reel

0.154 in (3.9 mm)

e0

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; IEC; UL; VDE

Slow

0453004.NRL

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

4 A

Wraparound

3.152 J

-55 °C (-67 °F)

Silver

50 A

5 s

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

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

125 V

Nano

0.24 x 0.106 x 0.106 in (6.1 x 2.69 x 2.69 mm)

0.106 in (2.69 mm)

CSA; PSE; UL

125 °C (257 °F)

Very Fast

3581400002

Littelfuse

Electric Fuse

Inline/Holder

500 V

4 A

End Cap

41 J

-25 °C (-13 °F)

1.5 kA

Bulk

0.248 in (6.3 mm)

500 V

10 ms

3AB

0.248 x 1.26 in (6.3 x 32 mm)

1.26 in (32 mm)

UL

85 °C (185 °F)

Time Lag

3254MVXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

9.71 J

-55 °C (-67 °F)

Matte Tin

400 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; CSA; PSE; UL

125 °C (257 °F)

Time Lag

324004

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

4 A

Pin Wire

10.4 J

Tin/Lead

750 A

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; PSE; QPL; UL

Fast

235004XP

Littelfuse

Electric Fuse

Inline/Holder

125 V

4 A

End Cap

17.6 J

-55 °C (-67 °F)

Tin

10 kA

0.205 in (5.2 mm)

e3

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CE; CSA; KTL; PSE; UL

125 °C (257 °F)

Fast

04534.00MRL

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

4 A

Wraparound

3.152 J

-55 °C (-67 °F)

Silver

50 A

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

0.24 x 0.106 x 0.106 in (6.1 x 2.69 x 2.69 mm)

0.106 in (2.69 mm)

CSA; PSE; UL

125 °C (257 °F)

Very Fast

162.6185.4406

Littelfuse

Electric Fuse

Inline/Holder

32 V

4 A

Tab/Blade

25 J

Tin

1 kA

Rated Breaking Capacity at 32 VDC: 1000 A

Bulk

0.748 in (19 mm)

0.197 in (5 mm)

e3

0.748 x 0.197 x 0.52 in (19 x 5 x 13.2 mm)

0.52 in (13.2 mm)

UL

3031400013

Littelfuse

Electric Fuse

Through Hole Mount

125 V

63 V

4 A

Pin Wire

1 J

-25 °C (-13 °F)

Matte Tin

50 A

Rated Breaking Capacity at 63 VDC: 50 A

1

Bulk

0.236 in (6 mm)

Supplemental

e3

125 V

5 s

Micro

0.236 x 0.315 in (6 x 8 mm)

0.315 in (8 mm)

CSA; UL

70 °C (158 °F)

Fast

0224004.MXP

Littelfuse

Electric Fuse

Through Hole Mount

125 V

4 A

Pin Wire

9.4 J

-55 °C (-67 °F)

Matte Tin

100 A

1 s

Bulk

0.189 in (4.8 mm)

e3

2AG

0.185 x 0.57 in (4.7 x 14.48 mm)

0.587 in (14.9 mm)

CE, CSA, PSE, UL

125 °C (257 °F)

Fast

4621400DR

Littelfuse

Electric Fuse

Surface Mount

250 V

250 V

4 A

Wraparound

17.6 J

-40 °C (-40 °F)

Tin

150 A

462

Rated Breaking Capacity at 250 VDC: 150 A

Tape And Reel

0.413 in (10.5 mm)

0.185 in (4.7 mm)

e3

10 ms

0.413 x 0.185 x 0.177 in (10.5 x 4.7 x 4.5 mm)

0.177 in (4.5 mm)

IEC; PSEJET; UL; VDE

85 °C (185 °F)

Time Lag

0232004.P

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

37.733 J

-55 °C (-67 °F)

Tin

100 A

Bulk; Tape And Reel

0.205 in (5.2 mm)

e3

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CE; PSE

125 °C (257 °F)

Medium

0229004.VXP

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

4 A

End Cap

148 J

-55 °C (-67 °F)

Matte Tin

400 A

Bulk

0.177 in (4.5 mm)

e3

Indicator

0.177 x 0.57 in (4.5 x 14.48 mm)

0.57 in (14.48 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

0313004.IDMXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

76.1 J

-55 °C (-67 °F)

10 kA

Bulk

1.25 in (31.75 mm)

Indicator

1.25 x 0.25 in (31.75 x 6.35 mm)

0.25 in (6.35 mm)

CE; CSA; KC; PSE; UL

125 °C (257 °F)

Time Lag

0251004.NXHF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

2.45 J

-55 °C (-67 °F)

Matte Tin

50 A

251

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

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)

CCC; CSA; PSE; QPL; TUV; UL

125 °C (257 °F)

Very Fast

0208004.MXP

Littelfuse

Electric Fuse

Inline/Holder

350 V

4 A

End Cap

9.4 J

-55 °C (-67 °F)

Nickel

100 A

Bulk

0.185 in (4.7 mm)

0.185 x 0.57 in (4.7 x 14.48 mm)

0.57 in (14.48 mm)

CE; PSE; UL

125 °C (257 °F)

Fast

0215004.VXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

46.96 J

-55 °C (-67 °F)

Tin

1.5 kA

Pre Arcing Time: Open within 0.010 s at 1000% Rated Current

Bulk

0.205 in (5.2 mm)

e3

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

BSI; CCC; CE; CSA; CUL; IEC; KC; PSE; SEMKO; UL; VDE

125 °C (257 °F)

Time Lag

0253004.HRL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

2.45 J

-55 °C (-67 °F)

Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A

Tape And Reel

0.103 in (2.61 mm)

e3

0.103 x 0.28 in (2.61 x 7.11 mm)

0.28 in (7.11 mm)

CCC; CSA; PSE; QPL; TUV; UL

125 °C (257 °F)

Very Fast

KLKD004.H

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

1206SFF400F/32-2

Littelfuse

Electric Fuse

Surface Mount

32 V

4 A

Wraparound

45 A

1206SFF400F/32-2

UL

125 °C (257 °F)

Fast

AGW4BP

Littelfuse

Electric Fuse

Inline/Holder

32 V

32 V

4 A

End Cap

0.25 in (6.35 mm)

32 V

7AG

0.875 in (22.225 mm)

0447004.

Littelfuse

Electric Fuse

Through Hole Mount

350 V

125 V

4 A

Pin Wire

17 J

-40 °C (-40 °F)

Tin

100 A

Rated Breaking Capacity at 125 VDC: 50 A

Bulk

0.43 in (10.92 mm)

0.15 in (3.81 mm)

e3

0.43 x 0.15 x 0.345 in (10.92 x 3.81 x 8.76 mm)

0.345 in (8.76 mm)

CSA; METI; PSE; UL

125 °C (257 °F)

Fast

0325004.MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

4 A

Pin Wire

9.71 J

-55 °C (-67 °F)

Tin

400 A

5 s

Rated Breaking Capacity at 125 VDC: 10000 A

9.71

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; CSA; PSE; UL

125 °C (257 °F)

Time Delay

0251004

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

2.45 J

-55 °C (-67 °F)

Tin Lead

50 A

Rated Breaking Capacity at 125 VDC: 300 A

2.45

0.095 in (2.41 mm)

e0

125 V

Pico

0.095 x 0.28 in (2.41 x 7.11 mm)

0.28 in (7.11 mm)

CSA; METI; PSE; UL

125 °C (257 °F)

Very Fast

0514004.MXEP

Littelfuse

Electric Fuse

Through Hole Mount

500 V

4 A

Pin Wire

12.43 J

-55 °C (-67 °F)

5 kA

2 m

Bulk

0.275 in (6.985 mm)

3AB

1.288 in (32.72 mm)

125 °C (257 °F)

Fast

0233004XW

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

53 J

233

0.207 in (5.25 mm)

0.207 x 0.886 in (5.25 x 22.5 mm)

0.886 in (22.5 mm)

CSA; MITI; UL

Medium

0477004.MXEP

Littelfuse

Electric Fuse

Through Hole Mount

500 V

400 V

4 A

Pin Wire

52.48 J

-55 °C (-67 °F)

100 A

10 ms

Rated Breaking Capacity at 400 VDC: 500 A

Bulk

0.217 in (5.5 mm)

0.197 x 0.787 in (5 x 20 mm)

0.228 x 0.886 in (5.8 x 22.5 mm)

0.846 in (21.5 mm)

PSE

125 °C (257 °F)

Time Lag

04534.00NRL

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

4 A

Wraparound

3.152 J

-55 °C (-67 °F)

Silver

50 A

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

0.24 x 0.106 x 0.106 in (6.1 x 2.69 x 2.69 mm)

0.106 in (2.69 mm)

CSA; PSE; UL

125 °C (257 °F)

Very Fast

R451004

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

4 A

Wraparound

3.152 J

Tin/Lead

50 A

e0

CSA; UL

Very Fast

0218004.MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

69.1 J

-55 °C (-67 °F)

Matte Tin

40 A

20 ms

69.1

Bulk

0.217 in (5.5 mm)

Supplemental

e3

250 V

0.197 x 0.787 in (5 x 20 mm)

0.228 x 0.886 in (5.8 x 22.5 mm)

0.846 in (21.5 mm)

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

125 °C (257 °F)

Time Lag

0230004.MXF16P

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

592004S

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

4 A

End Cap

Silver

592

e4

0451004.MRSN

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

4 A

Wraparound

3.152 J

-55 °C (-67 °F)

50 A

5 s

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

125 V

Nano

0.24 x 0.106 x 0.106 in (6.1 x 2.69 x 2.69 mm)

0.106 in (2.69 mm)

CE; CSA; CUL; PSE; TUV; UL

125 °C (257 °F)

Very Fast

0465004.DR

Littelfuse

Electric Fuse

Surface Mount

250 V

4 A

Wraparound

48.4 J

-55 °C (-67 °F)

Silver

100 A

10 ms

48.4

Tape And Reel

0.476 in (12.1 mm)

0.177 in (4.5 mm)

e4

250 V

Nano

0.476 x 0.177 x 0.177 in (12.1 x 4.5 x 4.5 mm)

0.177 in (4.5 mm)

CE; CUL; PSE; UKCA; UL

125 °C (257 °F)

Time Lag

3401400000

Littelfuse

Electric Fuse

Inline/Holder

250 V

4 A

End Cap

30 J

-25 °C (-13 °F)

100 A

Bulk

0.248 in (6.3 mm)

120 s

0.248 x 1.26 in (6.3 x 32 mm)

1.26 in (32 mm)

CSA; UL

70 °C (158 °F)

Very Fast

318004

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

4 A

Pin Wire

28.5 J

Tin Lead

35 A

0.276 in (7 mm)

e0

0.276 x 1.275 in (7 x 32.39 mm)

1.275 in (32.39 mm)

CSA; UL

Fast

0251004T1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

4 A

Pin Wire

2.45 J

-55 °C (-67 °F)

Matte Tin

50 A

0251

Rated Breaking Capacity at 125 VDC: 300 A

Tape And Reel

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)

CSA; METI; PSE; UL

125 °C (257 °F)

Very Fast

0603SFS400F/32

Littelfuse

Electric Fuse

Surface Mount

32 V

4 A

End Cap

2.3 J

-55 °C (-67 °F)

Tin Over Nickel

50 A

Rated Breaking Capacity at 32 VDC: 40 A

0.069 in (1.75 mm)

0.037 in (0.95 mm)

e3

0.069 x 0.037 x 0.037 in (1.75 x 0.95 x 0.95 mm)

0.037 in (0.95 mm)

UL

125 °C (257 °F)

Slow

0253004T1L

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

0253

Rated Breaking Capacity at 125 VDC: 300 A

Tape And Reel

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; METI; PSE; QPL; UL

125 °C (257 °F)

Very Fast

0263004.MXT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

3.08 J

-55 °C (-67 °F)

Pure Tin

50 A

Bulk

0.155 in (3.94 mm)

0.155 x 0.28 in (3.94 x 7.11 mm)

0.28 in (7.11 mm)

CSA; PSE; UL

125 °C (257 °F)

Very Fast

0263004.WRT1HF

Littelfuse

Electric Fuse

Through Hole Mount

250 V

4 A

Pin Wire

3.08 J

-55 °C (-67 °F)

Pure Tin

50 A

Tape And Reel

0.155 in (3.94 mm)

0.155 x 0.28 in (3.94 x 7.11 mm)

0.28 in (7.11 mm)

CSA; PSE; UL

125 °C (257 °F)

Very Fast

0434004

Littelfuse

Electric Fuse

Surface Mount

32 V

32 V

4 A

Wraparound

352 mJ

-55 °C (-67 °F)

Tin/Lead with Nickel barrier

35 A

434

Rated Breaking Capacity at 32 VDC: 35 A

0.063 in (1.6 mm)

0.032 in (0.81 mm)

e0

0.063 x 0.032 x 0.012 in (1.6 x 0.81 x 0.31 mm)

0.012 in (0.31 mm)

CSA; UL

90 °C (194 °F)

Very Fast

142.6185.4402

Littelfuse

Electric Fuse

Inline/Holder

58 V

4 A

Tab/Blade

25 J

Tin

Rated Breaking Capacity at 58 VDC: 1000 A

0.748 in (19 mm)

0.197 in (5 mm)

e3

0.748 x 0.197 x 0.52 in (19 x 5 x 13.2 mm)

0.52 in (13.2 mm)

UL

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.