250 mA Fuses 885

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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

0278.250V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

-55 °C (-67 °F)

Tin

100 kA

4 h

Bulk

0.235 in (5.97 mm)

e3

125 V

Micro

0.235 x 0.287 in (5.97 x 7.3 mm)

0.287 in (7.3 mm)

CSA, UL

125 °C (257 °F)

Very Fast

0230.250HXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

250 mA

Pin Wire

216 mJ

-55 °C (-67 °F)

Matte Tin

35 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

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; UL

125 °C (257 °F)

Time Lag

0253.250NAT3L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

11.6 mJ

-55 °C (-67 °F)

Pure Tin

50 A

253

Rated Breaking Capacity at 125 VDC: 300 A

Ammo Pack

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; QPL; UL

125 °C (257 °F)

Very Fast

0202.250H

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Flat

14.7 mJ

-55 °C (-67 °F)

Tin/Lead

50 A

2 s

0.014

Bulk

0.372 in (9.45 mm)

0.25 in (6.35 mm)

e0

250 V

0.372 x 0.25 x 0.165 in (9.45 x 6.35 x 4.19 mm)

0.165 in (4.19 mm)

CSA, UL

125 °C (257 °F)

Fast

0263.250HXT1HF

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

16.5 mJ

-55 °C (-67 °F)

Pure Tin

50 A

0263

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; UL

125 °C (257 °F)

Very Fast

0663.250ZRLL

Littelfuse

Electric Fuse

250 mA

-40 °C (-40 °F)

35 A

0.6

Tape And Reel

0.335 in (8.5 mm)

250 V

0.335 x 0.333 in (8.5 x 8.45 mm)

0.333 in (8.45 mm)

CSA, SEMKO, UL, VDE

85 °C (185 °F)

Time Lag

0491.250NRT1HF

Littelfuse

Electric Fuse

250 mA

Pin Wire

-55 °C (-67 °F)

4 h

Tape And Reel

0.11 in (2.8 mm)

125 V

Pico

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CSA, UL

125 °C (257 °F)

Very Fast

0263.250MAT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

16.5 mJ

-55 °C (-67 °F)

Matte Tin

50 A

100 ms

0.0165

Ammo Pack

0.155 in (3.94 mm)

e3

250 V

Pico

0.155 x 0.28 in (3.94 x 7.11 mm)

CSA, UL

125 °C (257 °F)

Very Fast

2010250000

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

130 mJ

-25 °C (-13 °F)

Matte Tin

80 A

Bulk

0.205 in (5.2 mm)

e3

5 ms

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

DIN 41571; UL

70 °C (158 °F)

Medium Time Lag

0229.250P

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

250 mA

End Cap

216 mJ

-55 °C (-67 °F)

Nickel

35 A

Rated Breaking Capacity at 125 VDC: 10000 A

0.177 in (4.5 mm)

Indicator

0.177 x 0.57 in (4.5 x 14.48 mm)

0.57 in (14.48 mm)

CE; CSA; UL

125 °C (257 °F)

Time Lag

FLSR.250

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

250 mA

200 kA

FLSR

Rated Breaking Capacity at 300 VDC: 20000 A

0.811 in (20.6 mm)

5 in (127 mm)

CSA; UL

Time Delay

0315.250MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

385 mJ

-60 °C (-76 °F)

Tin

35 A

5 s

0.385

Bulk

0.275 in (6.99 mm)

Supplemental

e3

250 V

3AG

1.273 x 0.275 in (32.34 x 6.98 mm)

1.288 in (32.72 mm)

CE; CSA; UL

125 °C (257 °F)

Time Lag

04910.250NAT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

-55 °C (-67 °F)

Pure Tin

50 A

300 ms

Pre-Arcing Time: Open within 0.3 s at 300% Rated Current

Ammo Pack

0.11 in (2.8 mm)

Pico

0.28 in (7.11 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0453.250MRSN

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

250 mA

Wraparound

15.8 mJ

-55 °C (-67 °F)

Silver

50 A

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

5 s

Nano

0.106 in (2.69 mm)

CSA; UL

125 °C (257 °F)

Very Fast

202.250G

Littelfuse

Electric Fuse

Surface Mount

250 V

250 mA

Gull Wing

14.7 mJ

-55 °C (-67 °F)

Tin Lead

50 A

202

Tape And Reel

0.372 in (9.45 mm)

0.25 in (6.35 mm)

e0

0.372 x 0.25 x 0.165 in (9.45 x 6.35 x 4.19 mm)

0.165 in (4.19 mm)

CSA; UL

125 °C (257 °F)

Fast

07945810192

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

250 mA

End Cap

-55 °C (-67 °F)

100 kA

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

KLKD.250H

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

250 mA

End Cap

-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

125 °C (257 °F)

Fast

0318.250MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

35.5 mJ

-55 °C (-67 °F)

Tin

35 A

5 s

0.0355

Tape And Reel

0.275 in (6.99 mm)

e3

250 V

3AG

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE; CSA; UL

125 °C (257 °F)

Fast

0213.250XP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

555 mJ

-55 °C (-67 °F)

Nickel

35 A

Bulk; Tape And Reel

0.205 in (5.2 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CCC; CE; CSA; IEC; SEMKO; SEV; UL

125 °C (257 °F)

Time Lag

0251.250HXT1HF

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

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)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

313.250

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

250 mA

End Cap

385 mJ

-55 °C (-67 °F)

35 A

5 s

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

0.385

0.25 in (6.35 mm)

Supplemental

250 V

4.27 Ω

3AG

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Slow

313.250M

Littelfuse

Electric Fuse

250 mA

Pin Wire

-55 °C (-67 °F)

35 A

4 h

0.385

1.25 in (31.75 mm)

Supplemental

250 V

4.27 Ω

3AG

1.25 in (31.75 mm)

CE; CSA; UL

125 °C (257 °F)

Time Lag

0451.250NRL

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

250 mA

Wraparound

15.8 mJ

-55 °C (-67 °F)

Silver

50 A

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

5 s

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

0239.250HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

340 mJ

-55 °C (-67 °F)

Matte Tin

35 A

4 h

0.34

Bulk

0.205 in (5.2 mm)

Supplemental

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; CSA; KC; UL

125 °C (257 °F)

Time Lag

0326.250MXCCP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

250 mA

End Cap

-55 °C (-67 °F)

4 h

0.432

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, CSA, UL

125 °C (257 °F)

Time Lag

7945816019

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

250 mA

End Cap

-55 °C (-67 °F)

10 kA

Rated Breaking Capacity at 300 VDC: 10000 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)

Time Delay

0230.250MXF32P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

250 mA

Pin Wire

216 mJ

-55 °C (-67 °F)

Matte Tin

35 A

Rated Breaking Capacity at 125 VDC: 10000 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; UL

125 °C (257 °F)

Time Lag

02010250FRT1L

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

130 mJ

-25 °C (-13 °F)

80 A

5 ms

0.205 in (5.2 mm)

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CUL; UL

70 °C (158 °F)

Medium Time Lag

197-250-000

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

19 mJ

-25 °C (-13 °F)

35 A

Bulk

0.205 in (5.2 mm)

120 s

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CUL; UL

70 °C (158 °F)

Medium Time Lag

0263.250MRT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

16.5 mJ

-55 °C (-67 °F)

Matte Tin

50 A

100 ms

0.0165

Tape And Reel

0.155 in (3.94 mm)

e3

250 V

Pico

0.155 x 0.28 in (3.94 x 7.11 mm)

CSA, UL

125 °C (257 °F)

Very Fast

3260.25MMXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

250 mA

End Cap

432 mJ

-55 °C (-67 °F)

Matte Tin

100 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

0.25 in (6.35 mm)

e3

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; UL

125 °C (257 °F)

Time Lag

0672.250DRT4

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

22.5 mJ

Tin Lead

50 A

5 s

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

0.0225

Tape And Reel

0.154 in (3.9 mm)

e0

250 V

0.142 x 0.394 in (3.6 x 10 mm)

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; UL

Fast

0219.250XAP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

540 mJ

-55 °C (-67 °F)

Nickel

150 A

219XAP

Bulk; Tape And Reel

0.205 in (5.2 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CCC; CSA; IEC; SEMKO; VDE

125 °C (257 °F)

Time Lag

230.250DRT1W

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

216 mJ

-55 °C (-67 °F)

Tin Lead

35 A

230

Tape And Reel

0.185 in (4.7 mm)

e0

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)

Slow

0251.250MAT1HF

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

251

Rated Breaking Capacity at 125 VDC: 300 A

Ammo Pack

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; QPL; UL

125 °C (257 °F)

Very Fast

37202500411

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

493.8 mJ

-40 °C (-40 °F)

Matte Tin

35 A

20 ms

0.28

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; UL; VDE

85 °C (185 °F)

Time Lag

0676.250MXE

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

25 mJ

Tin Lead

35 A

0.025

Bulk

0.154 in (3.9 mm)

e0

250 V

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; UL

Fast

0157.250.DR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

250 mA

Wraparound

11.26 mJ

-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)

UL

125 °C (257 °F)

Very Fast

7945894953

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

250 mA

Tab/Blade

-55 °C (-67 °F)

10 kA

Rated Breaking Capacity at 300 VDC: 10000 A

Bulk

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CE, UL

125 °C (257 °F)

Time Delay

0253.250TL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

11.6 mJ

-55 °C (-67 °F)

Pure Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A

Tape And Reel

0.095 in (2.41 mm)

0.095 x 0.28 in (2.41 x 7.11 mm)

0.28 in (7.11 mm)

CSA; PSE; QPL; UL

125 °C (257 °F)

Very Fast

0362.250H

Littelfuse

Electric Fuse

Inline/Holder

32 V

32 V

250 mA

End Cap

Bulk

0.25 in (6.35 mm)

32 V

8AG

1 in (25.4 mm)

Normal

324.250

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

250 mA

Pin Wire

14 mJ

Tin/Lead

35 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

FLQ1/4

Littelfuse

Electric Fuse

Inline/Holder

500 V

250 mA

End Cap

10 kA

0.406 in (10.31 mm)

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

CSA; UL

Slow

0218.250MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

540.5 mJ

-55 °C (-67 °F)

Tin

35 A

20 ms

0.5405

Bulk

0.217 in (5.5 mm)

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; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

0481.250VXLP

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

250 mA

End Cap

35.6 mJ

-55 °C (-67 °F)

300 A

5 m

Bulk

0.839 in (21.3 mm)

0.228 in (5.8 mm)

Alarm

0.772 in (19.6 mm)

CSA; UL

90 °C (194 °F)

0251.250PXT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

11.6 mJ

-55 °C (-67 °F)

Tin

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

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; UL

125 °C (257 °F)

Very Fast

0253.250NXL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

11.6 mJ

-55 °C (-67 °F)

Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

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)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

239.250

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

341 mJ

-55 °C (-67 °F)

Nickel

35 A

Bulk; Tape And Reel

0.205 in (5.2 mm)

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CSA; KTL; PSE; UL

125 °C (257 °F)

Time Lag

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.