250 A Fuses 265

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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

250E2C2.75

Littelfuse

Electric Fuse

Inline/Holder

2.75 KV

250 A

End Cap

80 kA

10 m

6.382 in (162.1 mm)

Striker

6.38 x 10.875 in (162.05 x 276.23 mm)

10.874 in (276.2 mm)

Medium

LDC250

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

250 A

Tab/Blade

200 kA

16 ms

Rated Breaking Capacity at 600 VDC: 50000 A

2.5 in (63.5 mm)

3.752 in (95.3 mm)

CE, UL

Fast

0CCK250.V

Littelfuse

Electric Fuse

Inline/Holder

125 V

250 A

Tab/Blade

10 kA

1.06 in (26.92 mm)

4.702 in (119.43 mm)

Time Delay

LDZ250E

Littelfuse

Electric Fuse

Inline/Holder

8.25 KV

250 A

End Cap

80 kA

LDZ

6.38 in (162.05 mm)

6.38 x 15.875 in (162.05 x 403.23 mm)

15.875 in (403.23 mm)

Medium

FLSR250ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

250 A

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

2.594 in (65.9 mm)

Indicator

2.594 x 11.626 in (65.9 x 295.3 mm)

11.626 in (295.3 mm)

CSA; QPL; UL

Time Delay

NH2M250

Littelfuse

Electric Fuse

Inline/Holder

500 V

440 V

250 A

Tab/Blade

120 kA

Rated Breaking Capacity at 440 VDC: 25000 A

2.921 in (74.2 mm)

1.969 in (50 mm)

Indicator

2.921 x 1.969 x 2.835 in (74.2 x 50 x 72 mm)

2.835 in (72 mm)

VDE

L15S250

Littelfuse

Electric Fuse

Inline/Holder

150 V

100 V

250 A

Tab/Blade

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 100 VDC: 20000 A

1 in (25.4 mm)

1 x 1.157 in (25.4 x 29.4 mm)

1.157 in (29.4 mm)

CSA; UL

125 °C (257 °F)

Very Fast

FLNR250

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

250 A

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

Bulk

2 in (50.8 mm)

8.626 in (219.1 mm)

CSA; UL

Time Delay

0298250.UXP-2M8

Littelfuse

Electric Fuse

Inline/Holder

32 V

250 A

Tab/Blade

176.2 kJ

-40 °C (-40 °F)

Tin

2 kA

100 ms

1.15 in (29.2 mm)

0.75 in (19.05 mm)

e3

32 V

Mega

0.381 in (9.69 mm)

125 °C (257 °F)

Time Delay

0898250.U-1M6

Littelfuse

Electric Fuse

Inline/Holder

70 V

250 A

Tab/Blade

220 kJ

-40 °C (-40 °F)

2.5 kA

100 ms

1.15 in (29.2 mm)

0.748 in (19 mm)

Mega

0.39 in (9.9 mm)

125 °C (257 °F)

Time Delay

JTD250

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

250 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

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

L25S250

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

250 A

Tab/Blade

200 kA

Rated Breaking Capacity at 250 VDC: 20000 A

1.5 in (38.1 mm)

1.5 x 1.594 in (38.1 x 40.5 mm)

1.594 in (40.5 mm)

CE; CSA; UL

Very Fast

156.5610.6251

Littelfuse

Electric Fuse

Inline/Holder

36 V

250 A

Tab/Blade

-40 °C (-40 °F)

625 A

1 m

Bulk

1.614 in (41 mm)

0.433 in (11 mm)

0.079 in (2 mm)

125 °C (257 °F)

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

157.5701.6251

Littelfuse

Electric Fuse

Inline/Holder

48 V

250 A

Tab/Blade

-40 °C (-40 °F)

1.5 kA

200 ms

Bulk

1.26 in (32 mm)

0.866 in (22 mm)

48 V

1.26 x 0.866 x 0.413 in (32 x 22 x 10.5 mm)

0.413 in (10.5 mm)

CUL; UL

125 °C (257 °F)

0581250

Littelfuse

Electric Fuse

Inline/Holder

48 V

48 V

250 A

Tab/Blade

2.5 kA

1.535 in (39 mm)

1.195 in (30.35 mm)

48 V

1.535 x 0.683 in (39 x 17.35 mm)

0.683 in (17.35 mm)

UL

Fast

15NLE3-250ES

Littelfuse

Electric Fuse

Inline/Holder

15.5 KV

250 A

End Cap

60 kA

Hermitically Sealed Part Number

9.75 in (247.65 mm)

9.75 x 23.875 in (247.65 x 606.43 mm)

23.875 in (606.43 mm)

Medium

155.0892.6251

Littelfuse

Electric Fuse

Surface Mount

58 V

250 A

Wraparound

330 kJ

-40 °C (-40 °F)

Matte Tin

2 kA

330000

0.925 in (23.5 mm)

0.787 in (20 mm)

e3

58 V

0.925 x 0.787 x 0.453 in (23.5 x 20 x 11.5 mm)

0.453 in (11.5 mm)

UL

125 °C (257 °F)

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

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

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

LLNRK250

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

250 A

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

2.094 in (53.2 mm)

2.094 x 8.626 in (53.2 x 219.1 mm)

8.626 in (219.1 mm)

CSA; UL

Time Delay

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

FLSR250

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

250 A

200 kA

FLSR

Rated Breaking Capacity at 300 VDC: 20000 A

2.594 in (65.9 mm)

11.626 in (295.3 mm)

CSA; UL

Time Delay

250E-3C-15.5S

Littelfuse

Electric Fuse

Inline/Holder

15.5 KV

250 A

End Cap

80 kA

Hermitically Sealed Part Number

9.726 in (247.05 mm)

9.726 x 18.875 in (247.05 x 479.43 mm)

18.875 in (479.43 mm)

Medium

KLA250

Littelfuse

Electric Fuse

Inline/Holder

150 V

100 V

250 A

Tab/Blade

100 kA

KLA

Rated Breaking Capacity at 100 VDC: 20000 A

1 in (25.4 mm)

1 x 1.157 in (25.4 x 29.4 mm)

1.157 in (29.4 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

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

0JLS250.X

Littelfuse

Electric Fuse

Inline/Holder

600 V

250 A

Tab/Blade

200 kA

Bulk

2 in (50.8 mm)

J

600 V

2 x 3.374 in (50.8 x 85.7 mm)

3.374 in (85.7 mm)

CE; CSA; QPL; UL

Fast

250E-2C-2.75S

Littelfuse

Electric Fuse

Inline/Holder

2.75 KV

250 A

End Cap

80 kA

Hermitically Sealed Part Number

6.38 in (162.05 mm)

6.38 x 10.875 in (162.05 x 276.23 mm)

10.875 in (276.23 mm)

Medium

157.5916.6251

Littelfuse

Electric Fuse

Inline/Holder

48 V

250 A

Tab/Blade

-40 °C (-40 °F)

1.5 kA

200 ms

Bulk

3.228 in (82 mm)

0.787 in (20 mm)

0.02 in (0.5 mm)

125 °C (257 °F)

0CNN250.V

Littelfuse

Electric Fuse

Inline/Holder

125 V

48 V

250 A

Tab/Blade

2.5 kA

3.181 in (80.8 mm)

48 V

3.18 in (80.77 mm)

UL

Very Fast

0898250.U-2M8

Littelfuse

Electric Fuse

Inline/Holder

70 V

250 A

Tab/Blade

220 kJ

-40 °C (-40 °F)

2.5 kA

100 ms

1.15 in (29.2 mm)

0.748 in (19 mm)

Mega

0.39 in (9.9 mm)

125 °C (257 °F)

Time Delay

FPSR071UL0250Z

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

2.823 in (71.7 mm)

2.264 in (57.5 mm)

Indicator

2.028 in (51.5 mm)

CE; CUL; UL

125 °C (257 °F)

PSR070UL0250

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

1.929 in (49 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825203

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

1.929 in (49 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR031UL0250

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

2.264 in (57.5 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR071UL0250

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

2.264 in (57.5 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825315

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

2.598 in (66 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR030UL0250

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

1.929 in (49 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825254

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

1.929 in (49 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR072UL0250

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

2.598 in (66 mm)

CUL; UL

125 °C (257 °F)

Fast

07945825262

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

2.264 in (57.5 mm)

CUL; UL

125 °C (257 °F)

Fast

L17T250.T

Littelfuse

Electric Fuse

Inline/Holder

170 V

250 A

Tab/Blade

100 kA

Bulk

1 in (25.4 mm)

1.157 in (29.4 mm)

CSA; UL

PSR031US0250

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

2.264 in (57.5 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR030US0250

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

1.929 in (49 mm)

CUL; UL

125 °C (257 °F)

Fast

FLNR250.XXID

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

250 A

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

Bulk

2 in (50.8 mm)

Indicator

8.626 in (219.1 mm)

CSA; 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.