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

JLS250

Littelfuse

Electric Fuse

Inline/Holder

600 V

250 A

Tab/Blade

200 kA

Bulk

2 in (50.8 mm)

2 x 3.374 in (50.8 x 85.7 mm)

3.374 in (85.7 mm)

CE; CSA; QPL; UL

Fast

JTD005

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

5 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

JTD005ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

5 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.811 in (20.6 mm)

Indicator

0.811 x 2.252 in (20.6 x 57.2 mm)

2.252 in (57.2 mm)

CSA; UL

Time Delay

JTD020

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

20 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

JTD03.5

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

3.5 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

JTD035

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

35 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

1.063 in (27 mm)

2.374 in (60.3 mm)

CSA; UL

Time Delay

JTD050

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

50 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

1.063 in (27 mm)

2.374 in (60.3 mm)

CSA; UL

Time Delay

JTD100ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

100 A

Tab/Blade

68.15 kJ

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

1.126 in (28.6 mm)

Indicator

1.126 x 2.626 in (28.6 x 66.7 mm)

2.626 in (66.7 mm)

CSA; UL

Time Delay

JTD200ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

200 A

Tab/Blade

159 kJ

200 kA

Rated Breaking Capacity at 500 VDC: 20000 A

Bulk

1.5 in (38.1 mm)

Indicator

1.626 x 3 in (41.3 x 76.2 mm)

3 in (76.2 mm)

CSA; UL

Time Delay

JTD300

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

300 A

Tab/Blade

200 kA

Rated Breaking Capacity at 500 VDC: 20000 A

Bulk

2 in (50.8 mm)

3.374 in (85.7 mm)

CSA; UL

Time Delay

JTD350

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

350 A

Tab/Blade

200 kA

Rated Breaking Capacity at 500 VDC: 20000 A

Bulk

2 in (50.8 mm)

3.374 in (85.7 mm)

CSA; UL

Time Delay

JTD450

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

450 A

Tab/Blade

200 kA

Rated Breaking Capacity at 500 VDC: 20000 A

Bulk

2.5 in (63.5 mm)

3.752 in (95.3 mm)

CSA; UL

Time Delay

KLDR004.HXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4 A

End Cap

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

Time Delay

KLDR004HXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

4 A

End Cap

83.81 J

200 kA

12 s

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Time Delay

KLDR010.TXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

10 A

End Cap

132 J

Nickel

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

CC

600 V

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CSA; UL

Time Delay

KLDR010TXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

10 A

End Cap

132 J

200 kA

12 s

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Time Delay

KLDR10

Littelfuse

KLDR3

Littelfuse

KLK001

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

1 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

KLKD.300T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

300 mA

End Cap

-55 °C (-67 °F)

Nickel

100 kA

4 m

0.406 in (10.31 mm)

600 V

0.394 x 1.496 in (10 x 38 mm)

1.5 x 1.5 in (38.1 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; IEC; UL

125 °C (257 °F)

Fast

KLKD.300.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

300 mA

End Cap

-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

125 °C (257 °F)

Fast

KLKD002.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

2 A

End Cap

12 mJ

-55 °C (-67 °F)

Nickel

100 kA

4 m

0.406 in (10.31 mm)

600 V

0.394 x 1.496 in (10 x 38 mm)

1.5 x 1.5 in (38.1 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; IEC; UL; VDE

125 °C (257 °F)

Fast

KLKD004.HXR

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)

600 V

0.394 x 1.496 in (10 x 38 mm)

1.5 x 0.406 x 1.5 in (38.1 x 10.31 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; IEC; UL

125 °C (257 °F)

Fast

KLKD005.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

5 A

End Cap

24 mJ

-55 °C (-67 °F)

100 kA

4 m

0.406 in (10.31 mm)

600 V

0.394 x 1.496 in (10 x 38 mm)

1.5 x 1.5 in (38.1 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; IEC; UL; VDE

125 °C (257 °F)

Fast

KLKD010.HXR

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

10 A

End Cap

211.667 J

-55 °C (-67 °F)

100 kA

4 m

0.406 in (10.31 mm)

600 V

0.394 x 1.496 in (10 x 38 mm)

1.5 x 0.406 x 1.5 in (38.1 x 10.31 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; IEC; UL

125 °C (257 °F)

Fast

KLKR005.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

5 A

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

CC

600 V

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE, CSA, UL

Fast

KLKR1

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

1 A

End Cap

200 kA

0.406 in (10.3 mm)

CC

600 V

1.5 in (38.1 mm)

CSA; UL

Fast

KLPC300.X

Littelfuse

Electric Fuse

Inline/Holder

600 V

480 V

300 A

Tab/Blade

200 kA

8.626 in (219.1 mm)

L

600 V

8.626 x 3.752 in (219.1 x 95.3 mm)

3.752 in (95.3 mm)

CE; CSA; UL

Time Lag

L15S150.T

Littelfuse

Electric Fuse

L50QS200.V

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

200 A

Tab/Blade

4.102 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 VDC: 50000 A

Bulk

1.218 in (30.94 mm)

10 ms

2.125 in (53.98 mm)

CE; CUL; UL

125 °C (257 °F)

Very Fast

L50QS250.V

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

250 A

Tab/Blade

7.094 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 VDC: 50000 A

Bulk

1.5 in (38.1 mm)

500 V

10 ms

2.093 in (53.16 mm)

CE; CUL; UL

125 °C (257 °F)

Very Fast

L50QS450.X

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

450 A

Tab/Blade

26.425 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 VDC: 50000 A

Bulk

2 in (50.8 mm)

10 ms

2.218 in (56.34 mm)

CE; CUL; UL

125 °C (257 °F)

Very Fast

L50QS500.X

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

500 A

Tab/Blade

31.747 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 VDC: 50000 A

Bulk

2 in (50.8 mm)

10 ms

2.218 in (56.34 mm)

CE; CUL; UL

125 °C (257 °F)

Very Fast

LA100URD73TTI1250

Littelfuse

Electric Fuse

Inline/Holder

1 KV

1.25 kA

End Cap

585 J

100 kA

LA

Indicator

UL

Very Fast

LA15QS1000-128

Littelfuse

Electric Fuse

Inline/Holder

150 V

150 V

1 kA

End Cap

540 J

100 kA

Rated Breaking Capacity at 150 VDC: 100000 A

2 in (50.8 mm)

2 x 1.63 in (50.8 x 41.4 mm)

1.63 in (41.4 mm)

UL

Very Fast

LLSRK070ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

70 A

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

1.311 in (33.3 mm)

Indicator

1.311 x 7.874 in (33.3 x 200 mm)

7.874 in (200 mm)

CSA; UL

Time Delay

NLN10

Littelfuse

PSR032FL0900Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

900 A

Threaded

107.785 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

2.008 in (51 mm)

Indicator

3.736 in (94.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR032FL1100Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

1.1 kA

Threaded

225.379 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

2.008 in (51 mm)

Indicator

3.736 in (94.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR032FS0400Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

400 A

Threaded

11.104 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.362 in (60 mm)

2.008 in (51 mm)

Indicator

3.736 in (94.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR033FL2000Z

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

2 kA

Threaded

1.234 MJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 500 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

2.008 in (51 mm)

Indicator

4.268 in (108.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR070FL0315Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

315 A

Threaded

18.162 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.913 in (74 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR071FL0400Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

400 A

Threaded

43.211 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.913 in (74 mm)

2.028 in (51.5 mm)

Indicator

3.402 in (86.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR073FL1000Z

Littelfuse

Electric Fuse

Inline/Holder

1.05 KV

800 V

1 kA

Threaded

476.221 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 800 VDC: 150000 A

Bulk

2.953 in (75 mm)

2.894 in (73.5 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSX1XLFL0125X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

125 A

Threaded

7.091 kJ

-55 °C (-67 °F)

250 kA

Bulk

4.988 in (126.7 mm)

2.028 in (51.5 mm)

Indicator

2.028 in (51.5 mm)

CUL; UL

125 °C (257 °F)

Fast

PSX1XLUB0200X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

200 A

Tab/Blade

18.016 kJ

-55 °C (-67 °F)

250 kA

Bulk

4.988 in (126.7 mm)

2.028 in (51.5 mm)

Indicator

2.028 in (51.5 mm)

CUL; UL

125 °C (257 °F)

Fast

PSX1XLUB0350X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

350 A

Tab/Blade

86.623 kJ

-55 °C (-67 °F)

250 kA

Bulk

4.988 in (126.7 mm)

2.028 in (51.5 mm)

Indicator

2.028 in (51.5 mm)

CUL; UL

125 °C (257 °F)

Fast

R451007.L

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

7 A

Wraparound

10.32 J

-55 °C (-67 °F)

Gold with Nickel barrier

451

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; UL

125 °C (257 °F)

Very 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.