250 A Fuses 50

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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

LA070URD30KI0250

Littelfuse

Electric Fuse

Inline/Holder

700 V

250 A

Tab/Blade

5.8 J

200 kA

1.575 in (40 mm)

1.575 in (40 mm)

Indicator

1.575 x 1.575 x 1.874 in (40 x 40 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

LA070URD30LI0250

Littelfuse

Electric Fuse

Inline/Holder

700 V

250 A

Tab/Blade

5.8 J

200 kA

1.575 in (40 mm)

1.575 in (40 mm)

Indicator

1.575 x 1.575 x 1.874 in (40 x 40 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

LA070URD30TTI0250

Littelfuse

Electric Fuse

Inline/Holder

700 V

250 A

End Cap

5.8 J

200 kA

1.575 in (40 mm)

1.575 in (40 mm)

Indicator

1.575 x 1.575 x 1.929 in (40 x 40 x 49 mm)

1.929 in (49 mm)

UL

Very Fast

LA070URD31KI0250

Littelfuse

Electric Fuse

Inline/Holder

700 V

250 A

Tab/Blade

4.7 J

200 kA

2.008 in (51 mm)

2.008 in (51 mm)

Indicator

2.008 x 2.008 x 1.874 in (51 x 51 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

LA070URD31LI0250

Littelfuse

Electric Fuse

Inline/Holder

700 V

250 A

Tab/Blade

4.7 J

200 kA

2.008 in (51 mm)

2.008 in (51 mm)

Indicator

2.008 x 2.008 x 1.874 in (51 x 51 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

LA070URD31TTI0250

Littelfuse

Electric Fuse

Inline/Holder

700 V

250 A

End Cap

4.7 J

200 kA

2 in (50.8 mm)

2 in (50.8 mm)

Indicator

2 x 2 x 1.929 in (50.8 x 50.8 x 49 mm)

1.929 in (49 mm)

UL

Very Fast

LA100P250-4

Littelfuse

Electric Fuse

Inline/Holder

1 KV

750 V

250 A

Tab/Blade

110 J

100 kA

Rated Breaking Capacity at 750 VDC: 100000 A

2 in (50.8 mm)

2 x 3.469 in (50.8 x 88.1 mm)

3.469 in (88.1 mm)

UL

Very Fast

LA130URD70LI0250

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

250 A

Tab/Blade

9.6 J

100 kA

1.575 in (40 mm)

1.575 in (40 mm)

Indicator

1.575 x 1.575 x 2.854 in (40 x 40 x 72.5 mm)

2.854 in (72.5 mm)

UL

Very Fast

LA130URD71LLI0250

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

250 A

Tab/Blade

8.9 J

100 kA

2.008 in (51 mm)

2.008 in (51 mm)

Indicator

2.008 x 2.008 x 2.854 in (51 x 51 x 72.5 mm)

2.854 in (72.5 mm)

UL

Very Fast

LA15QS250-4TI

Littelfuse

Electric Fuse

Inline/Holder

150 V

150 V

250 A

Tab/Blade

15 J

100 kA

Rated Breaking Capacity at 150 VDC: 100000 A

1.13 in (28.7 mm)

Indicator

1.13 x 1.161 in (28.7 x 29.5 mm)

1.161 in (29.5 mm)

UL

Very Fast

LA15QS250-4

Littelfuse

Electric Fuse

Inline/Holder

150 V

150 V

250 A

Tab/Blade

15 J

100 kA

Rated Breaking Capacity at 150 VDC: 100000 A

1.13 in (28.7 mm)

1.13 x 1.161 in (28.7 x 29.5 mm)

1.161 in (29.5 mm)

UL

Very Fast

LA30QS250-4TI

Littelfuse

Electric Fuse

Inline/Holder

300 V

300 V

250 A

Tab/Blade

25 J

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

1.5 in (38.1 mm)

Indicator

1.5 x 1.579 in (38.1 x 40.1 mm)

1.579 in (40.1 mm)

UL

Very Fast

LA30QS250-4

Littelfuse

Electric Fuse

Inline/Holder

300 V

300 V

250 A

Tab/Blade

25 J

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

1.5 in (38.1 mm)

1.5 x 1.579 in (38.1 x 40.1 mm)

1.579 in (40.1 mm)

UL

Very Fast

LA50QS250-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

250 A

Tab/Blade

29 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

LA70QS250-4

Littelfuse

Electric Fuse

Inline/Holder

700 V

700 V

250 A

Tab/Blade

42 J

200 kA

Rated Breaking Capacity at 700 VDC: 100000 A

1.5 in (38.1 mm)

1.5 x 2.843 in (38.1 x 72.2 mm)

2.843 in (72.2 mm)

CSA; UL

Fast

JLLN250

Littelfuse

Electric Fuse

Inline/Holder

300 V

125 V

250 A

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

1.311 in (33.3 mm)

1.311 x 0.827 in (33.3 x 21 mm)

2.752 in (69.9 mm)

CE; CSA; CUL; UL

Fast

15NLE3250E

Littelfuse

Electric Fuse

Inline/Holder

15.5 KV

250 A

End Cap

60 kA

10 m

9.752 in (247.7 mm)

Striker

9.75 x 23.875 in (247.65 x 606.43 mm)

23.875 in (606.43 mm)

Medium

5NLE2250E

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

250 A

End Cap

80 kA

10 m

6.382 in (162.1 mm)

Striker

6.38 x 17.875 in (162.05 x 454.03 mm)

17.875 in (454.03 mm)

Medium

8NLE2250E

Littelfuse

Electric Fuse

Inline/Holder

8.25 KV

250 A

End Cap

80 kA

10 m

6.382 in (162.1 mm)

Striker

6.38 x 17.87 in (162.05 x 453.89 mm)

17.875 in (454.03 mm)

Medium

PSR030FL0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Threaded

4.668 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.969 in (50 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR030FS0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Threaded

4.668 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.969 in (50 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR031FL0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Threaded

3.789 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.969 in (50 mm)

Indicator

3.402 in (86.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR031FS0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Threaded

3.789 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.969 in (50 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR070FL0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Threaded

8.629 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

PSR070FS0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Threaded

8.629 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)

CUL; UL

125 °C (257 °F)

Fast

PSR071FL0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Threaded

10.592 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

PSR071FS0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Threaded

10.592 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)

CUL; UL

125 °C (257 °F)

Fast

PSR072FL0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Threaded

7.737 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.953 in (75 mm)

2.362 in (60 mm)

Indicator

3.736 in (94.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR072FS0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Threaded

7.737 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.953 in (75 mm)

2.362 in (60 mm)

Indicator

3.736 in (94.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSX1XLDB0250X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

250 A

Tab/Blade

36.552 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

PSX1XLFL0250X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

250 A

Threaded

36.552 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

PSX1XLUB0250X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

250 A

Tab/Blade

36.552 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

PSR070UL0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Tab/Blade

8.629 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.823 in (71.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR072UL0250X

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Tab/Blade

7.737 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.362 in (60 mm)

Indicator

3.736 in (94.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR030US0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Tab/Blade

4.668 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR031US0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Tab/Blade

3.789 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.937 in (49.2 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR030UL0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Tab/Blade

4.668 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR031UL0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Tab/Blade

3.789 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.937 in (49.2 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR071UL0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Tab/Blade

10.592 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.028 in (51.5 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR071DL0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Tab/Blade

10.592 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.028 in (51.5 mm)

Indicator

3.402 in (86.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR070DL0250Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Tab/Blade

8.629 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.823 in (71.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR031DL0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Tab/Blade

3.789 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.937 in (49.2 mm)

Indicator

3.402 in (86.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR030DL0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Tab/Blade

4.668 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR031DS0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Tab/Blade

3.789 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.937 in (49.2 mm)

Indicator

3.402 in (86.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR072DL0250X

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

250 A

Tab/Blade

7.737 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.362 in (60 mm)

Indicator

3.736 in (94.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR030DS0250Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

250 A

Tab/Blade

4.668 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

0AKK-K250-BA

Bel Fuse

Electric Fuse

Inline/Holder

1 KV

250 A

Tab/Blade

9.6 kJ

-40 °C (-40 °F)

Tin

50 kA

Bulk

2.913 in (74 mm)

1.772 in (45 mm)

e3

0.984 in (25 mm)

125 °C (257 °F)

Fast

0AKRBK250-BB

Bel Fuse

Electric Fuse

Inline/Holder

500 V

250 A

Tab/Blade

-40 °C (-40 °F)

Tin

50 kA

Bulk

1.929 in (49 mm)

1.457 in (37 mm)

e3

0.945 in (24 mm)

105 °C (221 °F)

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.