Littelfuse Fuses 2,400+

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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

KLKD02.5.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

2.5 A

End Cap

5.142 J

-55 °C (-67 °F)

100 kA

4 m

Pre Arcing Time: Clear within 4 m at 200% Rated Current; Rated Breaking Capacity at 600 VDC: 50000 A

Bulk

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; UL; VDE

125 °C (257 °F)

Fast

LA50QS400-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

400 A

Tab/Blade

98 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.5 in (38.1 mm)

500 V

1.5 x 2.091 in (38.1 x 53.1 mm)

2.091 in (53.1 mm)

CSA; UL

Fast

LA70QS600-4

Littelfuse

Electric Fuse

Inline/Holder

700 V

700 V

600 A

Tab/Blade

222 J

200 kA

Rated Breaking Capacity at 700 VDC: 100000 A

2 in (50.8 mm)

2 x 2.843 in (50.8 x 72.2 mm)

2.843 in (72.2 mm)

CSA; UL

Fast

LA70QS600-4K

Littelfuse

Electric Fuse

Inline/Holder

700 V

700 V

600 A

Tab/Blade

222 J

200 kA

Rated Breaking Capacity at 700 VDC: 100000 A

2 in (50.8 mm)

2 x 2.843 in (50.8 x 72.2 mm)

2.843 in (72.2 mm)

CSA; UL

Fast

MAX50

Littelfuse

Electric Fuse

Inline/Holder

32 V

50 A

Tab/Blade

11.3 kJ

-40 °C (-40 °F)

1 kA

40 ms

Box

1.15 in (29.2 mm)

0.346 in (8.8 mm)

0.85 in (21.6 mm)

UL

125 °C (257 °F)

Slow

02151.25MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

1.25 A

End Cap

3.2 J

-55 °C (-67 °F)

Nickel

1.5 kA

10 ms

Pre Arcing Time: Open within 10 ms at 1000% Rated Current

3.2

Bulk

0.205 in (5.2 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

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

125 °C (257 °F)

Time Lag

0215.125MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

125 mA

End Cap

33 mJ

-55 °C (-67 °F)

Tin

1.5 kA

5 ms

Pre Arcing Time: Open within 5 ms at 1000% Rated Current

0.033

Bulk

0.205 in (5.2 mm)

e3

250 V

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CE; IEC; SEMKO; UL

125 °C (257 °F)

Time Lag

0217.050HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

50 mA

End Cap

190 μJ

-55 °C (-67 °F)

Nickel

35 A

3 ms

0.0001

Bulk

0.205 in (5.2 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; IEC; KC; SEMKO; UL; VDE

125 °C (257 °F)

Very Fast

0229006.HXP

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

6 A

End Cap

380 J

-55 °C (-67 °F)

Tin

400 A

4 h

380

Bulk

0.177 in (4.5 mm)

e3

125 V

2AG

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

0251.250MXL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

11.6 mJ

-55 °C (-67 °F)

Matte Tin

50 A

1 s

Pre Arcing Time: Open within 1 s at 200% Rated Current

0.0116

Bulk

0.11 in (2.8 mm)

Supplemental

e3

125 V

Pico

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CSA; CUL; UL

125 °C (257 °F)

Very Fast

0251007.MAT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

7 A

Pin Wire

10.4 J

-55 °C (-67 °F)

Matte Tin

50 A

30 ms

Rated Breaking Capacity at 125 VDC: 300 A

Ammo Pack

0.11 in (2.8 mm)

e3

Pico

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CSA; QPL; TUV; UL

125 °C (257 °F)

Very Fast

02512.50MXL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

11.6 mJ

-55 °C (-67 °F)

Matte Tin

50 A

1 s

Pre Arcing Time: Open within 1 s at 200% Rated Current

0.0116

Bulk

0.11 in (2.8 mm)

Supplemental

e3

125 V

Pico

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CSA; CUL; UL

125 °C (257 °F)

Very Fast

0257035.PXPV

Littelfuse

Electric Fuse

Inline/Holder

32 V

35 A

Tab/Blade

2.28 kJ

-40 °C (-40 °F)

Tin/Copper

1 kA

Bulk

0.75 in (19.05 mm)

0.2 in (5.08 mm)

e2

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)

0257035PXPV

Littelfuse

Electric Fuse

Inline/Holder

32 V

35 A

Tab/Blade

2.28 kJ

-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)

029707.5.H

Littelfuse

Electric Fuse

Inline/Holder

32 V

7.5 A

Tab/Blade

68 J

-40 °C (-40 °F)

1 kA

30 ms

0.429 in (10.9 mm)

0.15 in (3.8 mm)

Mini

0.346 in (8.8 mm)

UL

125 °C (257 °F)

029707.5.U

Littelfuse

Electric Fuse

Inline/Holder

32 V

7.5 A

Tab/Blade

68 J

-40 °C (-40 °F)

1 kA

30 ms

0.429 in (10.9 mm)

0.15 in (3.8 mm)

Mini

0.346 in (8.8 mm)

UL

125 °C (257 °F)

029707.5.WXT

Littelfuse

Electric Fuse

Inline/Holder

32 V

7.5 A

Tab/Blade

68 J

-40 °C (-40 °F)

1 kA

30 ms

0.429 in (10.9 mm)

0.15 in (3.8 mm)

Mini

0.346 in (8.8 mm)

125 °C (257 °F)

029707.5H

Littelfuse

Electric Fuse

Inline/Holder

32 V

7.5 A

Tab/Blade

82 J

-40 °C (-40 °F)

1 kA

30 ms

68

0.429 in (10.9 mm)

0.15 in (3.8 mm)

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)

029707.5U

Littelfuse

Electric Fuse

Inline/Holder

32 V

7.5 A

Tab/Blade

82 J

-40 °C (-40 °F)

Silver

1 kA

30 ms

68

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)

029707.5WXT

Littelfuse

Electric Fuse

Inline/Holder

32 V

7.5 A

Tab/Blade

82 J

-40 °C (-40 °F)

1 kA

30 ms

0.429 in (10.9 mm)

0.15 in (3.8 mm)

32 V

Mini

0.346 in (8.8 mm)

UL

125 °C (257 °F)

0314030.HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

30 A

End Cap

2.49 kJ

-55 °C (-67 °F)

Nickel

100 A

Rated Breaking Capacity at 75 VDC: 400 A

2490

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; KC; PSE; UL

125 °C (257 °F)

Fast

04484.00MR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

400 mA

Wraparound

41.6 mJ

-55 °C (-67 °F)

Gold

50 A

5 s

0.04

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; UL

125 °C (257 °F)

Very Fast

0448.400MR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

400 mA

Wraparound

41.6 mJ

-55 °C (-67 °F)

Gold

50 A

5 s

0.04

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; UL

125 °C (257 °F)

Very Fast

0461002.ER

Littelfuse

Electric Fuse

Surface Mount

600 V

80 V

2 A

Wraparound

17.5 J

-55 °C (-67 °F)

Silver

60 A

1 s

Rated Breaking Capacity at 80 VDC: 100 A

17.5

Tape And Reel

0.398 in (10.1 mm)

0.123 in (3.12 mm)

e4

600 V

4012

0.398 x 0.123 x 0.123 in (10.1 x 3.12 x 3.12 mm)

0.123 in (3.12 mm)

CSA; UL

125 °C (257 °F)

Slow

0477012.MXEP

Littelfuse

Electric Fuse

Through Hole Mount

500 V

400 V

12 A

Pin Wire

576 J

-55 °C (-67 °F)

Matte Tin

100 A

10 ms

Rated Breaking Capacity at 400 VDC: 500 A

Bulk

0.217 in (5.5 mm)

e3

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)

CUL; PSE; TUV; UL

125 °C (257 °F)

Time Lag

09773.15MXEP

Littelfuse

Electric Fuse

Through Hole Mount

500 V

450 V

3.15 A

Pin Wire

58 J

-55 °C (-67 °F)

Matte Tin

100 A

Rated Breaking Capacity at 450 VDC: 200 A

58

Bulk

0.228 in (5.8 mm)

e3

500 V

0.197 x 0.787 in (5 x 20 mm)

0.228 x 0.886 in (5.8 x 22.5 mm)

0.886 in (22.5 mm)

CE; PSE; SEMKO

125 °C (257 °F)

Time Lag

0JTD004.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.811 in (20.6 mm)

2.252 in (57.2 mm)

CSA; UL

Time Delay

0KLK01.5T

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

1.5 A

End Cap

100 kA

Rated Breaking Capacity at 500 VDC: 50000 A

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; UL

Fast

0KLK015.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

15 A

End Cap

100 kA

Rated Breaking Capacity at 500 VDC: 50000 A

0.406 in (10.31 mm)

600 V

0.394 x 1.496 in (10 x 38 mm)

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

CSA; UL

Fast

0MIN07.5VP

Littelfuse

Electric Fuse

Inline/Holder

32 V

7.5 A

Tab/Blade

68 J

-40 °C (-40 °F)

1 kA

30 ms

Bulk

0.429 in (10.9 mm)

0.15 in (3.8 mm)

0.346 in (8.8 mm)

UL

125 °C (257 °F)

0SLC020.T

Littelfuse

Electric Fuse

20 A

End Cap

100 kA

0.406 in (10.3 mm)

G

600 V

0.406 x 1.406 in (10.3 x 35.7 mm)

1.406 in (35.7 mm)

CSA, UL

Medium

142.5395.6152

Littelfuse

Electric Fuse

Inline/Holder

58 V

150 A

Tab/Blade

113.4 kJ

-40 °C (-40 °F)

1 kA

100 ms

1.142 in (29 mm)

58 V

1.142 x 0.74 x 0.366 in (29 x 18.8 x 9.3 mm)

0.366 in (9.3 mm)

UL

125 °C (257 °F)

Slow

36911000000

Littelfuse

Electric Fuse

Through Hole Mount

300 V

300 V

1 A

Pin Wire

8 J

-40 °C (-40 °F)

Matte Tin

50 A

20 s

5.8

Ammo Pack

0.335 in (8.5 mm)

0.157 in (4 mm)

e3

300 V

TE5

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

0.315 in (8 mm)

CUL; PSE; UL; VDE

85 °C (185 °F)

Time Lag

37016300410

Littelfuse

Electric Fuse

Through Hole Mount

250 V

6.3 A

Pin Wire

24 J

-40 °C (-40 °F)

Tin

63 A

20 ms

Ammo Pack; Tape

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)

CCC; CE; CUL; VDE; UL

85 °C (185 °F)

Fast

37215000431

Littelfuse

Electric Fuse

Through Hole Mount

250 V

5 A

Pin Wire

115 J

-40 °C (-40 °F)

Matte Tin

50 A

20 ms

94

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)

CCC; CE; CUL; KC; PSE; UL; VDE

85 °C (185 °F)

Time Lag

38211000000

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1 A

Wire

4.85 J

-40 °C (-40 °F)

Matte Tin

100 A

150 ms

3

Ammo Pack

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)

CCC; CE; CUL; PSE; UL; VDE

85 °C (185 °F)

Time Lag

56000001019

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

Pin Wire

-40 °C (-40 °F)

Tin

Bulk

0.374 in (9.5 mm)

e3

TR5

0.169 in (4.3 mm)

UL; VDE

85 °C (185 °F)

AGC8

Littelfuse

Electric Fuse

Inline/Holder

32 V

32 V

8 A

End Cap

0.25 in (6.35 mm)

32 V

3AG

1.25 in (31.75 mm)

AGU50

Littelfuse

Electric Fuse

Inline/Holder

32 V

32 V

50 A

End Cap

0.406 in (10.3187 mm)

32 V

5AG

1.5 in (38.1 mm)

CCMR003.TXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

3 A

End Cap

286 J

Nickel

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

600 V

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Time Delay

KLKR010

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

10 A

Tab/Blade

Nickel

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE, CSA, UL

Fast

KLKR010.

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

10 A

End Cap

Nickel

200 kA

Rated Breaking Capacity at 600 VDC: 20000 A

0.406 in (10.3 mm)

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Fast

L25S150

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

150 A

Tab/Blade

200 kA

Rated Breaking Capacity at 250 VDC: 20000 A

1.22 in (31 mm)

1.22 x 1.626 in (31 x 41.3 mm)

1.626 in (41.3 mm)

CE; CSA; UL

Very Fast

PAL230

Littelfuse

Electric Fuse

Inline/Holder

30 A

Tab/Blade

Bulk

0157003.DRT

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

3 A

Wraparound

20.16 J

-55 °C (-67 °F)

Matte Tin

50 A

100 ms

Tape And Reel

0.256 in (6.5 mm)

0.106 in (2.69 mm)

e3

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)

CUL; PSE; UL

125 °C (257 °F)

Time Lag

0157003DRT

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

3 A

Wraparound

20.16 J

-55 °C (-67 °F)

Matte Tin

50 A

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e3

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

0.106 in (2.69 mm)

PSE; UL

125 °C (257 °F)

Time Lag

0216.500HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

500 mA

End Cap

165 mJ

-55 °C (-67 °F)

Nickel

1.5 kA

0.165

Bulk

0.205 in (5.2 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; IEC; SEMKO; UL; VDE

125 °C (257 °F)

Fast

0216.500MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

500 mA

End Cap

165 mJ

-55 °C (-67 °F)

Nickel

1.5 kA

20 ms

0.165

Bulk

0.205 in (5.2 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; IEC; SEMKO; UL; VDE

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.