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

267.250

Littelfuse

Electric Fuse

125 V

125 V

250 mA

267

0253.250MRT1L

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

0.0116

Tape And Reel

0.11 in (2.8 mm)

Supplemental

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

0253.250NAT3

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, Pre Arcing Time: Open within 1000 ms at 200% Rated Current

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; UL

125 °C (257 °F)

Very Fast

0448.250NR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

250 mA

End Cap

15.2 mJ

-55 °C (-67 °F)

Gold

50 A

Rated Breaking Capacity at 125 VDC: 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)

CSA; PSE; UL

125 °C (257 °F)

Very Fast

0325.250MX52P

Littelfuse

Electric Fuse

250 mA

Pin Wire

-55 °C (-67 °F)

4 h

0.432

0.275 in (6.985 mm)

250 V

3AB

0.275 x 1.288 in (6.985 x 32.72 mm)

1.288 in (32.72 mm)

CE, CSA, UL

125 °C (257 °F)

Time Lag

0239.250HXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

340 mJ

-55 °C (-67 °F)

Tin

35 A

4 h

0.34

Bulk

0.228 in (5.8 mm)

Supplemental

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)

0.886 in (22.5 mm)

CE; CSA; KC; UL

125 °C (257 °F)

Time Lag

0253.250MRT1

Littelfuse

Electric Fuse

250 mA

Pin Wire

-55 °C (-67 °F)

300 A

0.0116

Tape And Reel

0.103 in (2.61 mm)

Supplemental

125 V

Pico

0.103 x 0.28 in (2.61 x 7.11 mm)

0.28 in (7.11 mm)

CSA, UL

125 °C (257 °F)

Very Fast

0208.250DRT1

Littelfuse

Electric Fuse

250 mA

End Cap

-55 °C (-67 °F)

100 A

4 h

0.03

Tape And Reel

0.185 in (4.7 mm)

350 V

2AG

0.185 x 0.57 in (4.7 x 14.48 mm)

0.57 in (14.48 mm)

CE, UL

125 °C (257 °F)

Fast

0677.250MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

312 mJ

-55 °C (-67 °F)

35 A

20 ms

Bulk

0.153 in (3.89 mm)

0.142 x 0.394 in (3.6 x 10 mm)

0.433 in (11 mm)

CSA; CQC; UL; VDE

125 °C (257 °F)

Time Lag

235.250XP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

17 mJ

-55 °C (-67 °F)

Tin

35 A

235

0.205 in (5.2 mm)

e3

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CE; CSA; KTL; UL

125 °C (257 °F)

Fast

1950250040

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

320 mJ

-25 °C (-13 °F)

35 A

Bulk

0.213 in (5.4 mm)

20 ms

0.197 x 0.787 in (5 x 20 mm)

0.827 in (21 mm)

BSI; CCEE; CUL; DIN; IEC; IMQ; SEMKO; UL; VDE

70 °C (158 °F)

Time Lag

SOO.250

Littelfuse

Electric Fuse

Inline/Holder

125 V

250 mA

End Cap

10 kA

UL

Time Delay

0216.250TXE

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

8.91 mJ

-55 °C (-67 °F)

Tin

1.2 kA

Bulk

0.236 in (6 mm)

e3

0.236 x 0.886 in (6 x 22.5 mm)

0.886 in (22.5 mm)

CCC; CE; CSA; SEMKO; UL; VDE

125 °C (257 °F)

Fast

0253.250VRT1L

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

0.11 in (2.8 mm)

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

228.250

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

555 mJ

35 A

228

0.207 in (5.25 mm)

0.207 x 0.886 in (5.25 x 22.5 mm)

0.886 in (22.5 mm)

CSA; IEC; SEMKO; UL; VDE

Time Lag

0251.250NRHF

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

Tape And Reel

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

0266.250V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

250 mA

Pin Wire

-55 °C (-67 °F)

Gold

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

0.093 in (2.36 mm)

e4

Pico

0.093 x 0.28 in (2.36 x 7.11 mm)

0.28 in (7.11 mm)

CSA; QPL

125 °C (257 °F)

Very Fast

KLKD1/4

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)

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

CSA, UL

125 °C (257 °F)

Fast

1940250043

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

13 mJ

-25 °C (-13 °F)

1.5 kA

Tape And Reel

0.213 in (5.4 mm)

20 ms

0.197 x 0.787 in (5 x 20 mm)

0.827 in (21 mm)

DIN; IEC; SEMKO; VDE

70 °C (158 °F)

Very Fast

1910250000

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

24 mJ

-25 °C (-13 °F)

35 A

Bulk

0.205 in (5.2 mm)

5 s

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

CSA; CUL; UL

70 °C (158 °F)

Very Fast

217.250P

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

42 mJ

-55 °C (-67 °F)

Matte Tin

35 A

Bulk; Tape And Reel

0.205 in (5.2 mm)

e3

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

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

125 °C (257 °F)

Fast

0253.250HRT3L

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

Tape And Reel

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

0253.250NRT3L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

11.6 mJ

-55 °C (-67 °F)

Tin

50 A

0253

Rated Breaking Capacity at 125 VDC: 300 A

Tape And Reel

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

218.250

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

540 mJ

-55 °C (-67 °F)

35 A

20 ms

Pre Arcing Time: Open within 20 ms at 1000% Rated Current

0.5405

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; KTL; SEMKO; UL

125 °C (257 °F)

Time Lag

0251.250PRL

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

Tape And Reel

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

0230.250MXEP

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

0263.250WAT1HF

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

16.5 mJ

-55 °C (-67 °F)

Pure Tin

50 A

Ammo Pack

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

0202.250URG

Littelfuse

Electric Fuse

Surface Mount

250 V

250 mA

Gull Wing

14.7 mJ

-55 °C (-67 °F)

Tin/Lead

50 A

2 s

0.014

Tape And Reel

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

312.250P

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

35.5 mJ

Nickel

35 A

312P

0.25 in (6.35 mm)

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; UL

Fast

274.250

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

6.4 mJ

-55 °C (-67 °F)

10 kA

Rated Breaking Capacity at 125 VDC: 10000 A

0.25 in (6.35 mm)

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

275.250

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

-55 °C (-67 °F)

50 A

4 h

Rated Breaking Capacity at 125 VDC: 300 A

0.093 in (2.36 mm)

Supplemental

125 V

Pico

0.093 x 0.28 in (2.36 x 7.11 mm)

0.28 in (7.11 mm)

CSA; UL

125 °C (257 °F)

Very Fast

1930250040

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

32 mJ

-25 °C (-13 °F)

35 A

Bulk

0.213 in (5.4 mm)

20 ms

0.197 x 0.787 in (5 x 20 mm)

0.827 in (21 mm)

CUL; DIN; IEC; SEMKO; VDE; UL

70 °C (158 °F)

Very Fast

238.250

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

350.8 mJ

238

0.207 in (5.25 mm)

0.207 x 0.886 in (5.25 x 22.5 mm)

0.886 in (22.5 mm)

CSA; UL

Time Lag

0675.250MXE

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

25 mJ

Tin Lead

50 A

4 h

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

Slow

0665.250HXSL

Littelfuse

Electric Fuse

250 mA

-40 °C (-40 °F)

50 A

4 h

0.258

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, UL

85 °C (185 °F)

Time Lag

0253.250HX

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

11.6 mJ

-55 °C (-67 °F)

50 A

1 s

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

Bulk

0.103 in (2.61 mm)

125 V

Pico

0.28 in (7.11 mm)

CSA; CUL; QPL; UL

125 °C (257 °F)

Very Fast

0253.250HAT3

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, Pre Arcing Time: Open within 1000 ms at 200% Rated Current

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; UL

125 °C (257 °F)

Very Fast

0435.250

Littelfuse

Electric Fuse

Surface Mount

24 V

250 mA

Wraparound

2.5 mJ

-55 °C (-67 °F)

Tin/Nickel

35 A

Rated Breaking Capacity at 24 VDC: 35 A

0.041 in (1.04 mm)

0.02 in (0.51 mm)

0.041 x 0.02 x 0.012 in (1.04 x 0.51 x 0.3 mm)

0.012 in (0.3 mm)

CSA; UL

90 °C (194 °F)

Very Fast

KLDR.250

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

250 mA

End Cap

13.8 mJ

Nickel

200 kA

12 s

Rated Breaking Capacity at 300 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

Time Delay

0213.250MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

555 mJ

-55 °C (-67 °F)

Tin

35 A

20 ms

0.555

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; IEC; SEV; SEMKO; UL; VDE

125 °C (257 °F)

Time Lag

239.250XP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

350.8 mJ

-55 °C (-67 °F)

Matte Tin

35 A

Bulk; Tape And Reel

0.886 in (22.5 mm)

e3

0.886 x 0.228 in (22.5 x 5.8 mm)

0.228 in (5.8 mm)

CE; CSA; KTL; PSE; UL

125 °C (257 °F)

Time Lag

0324.250MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

250 mA

Pin Wire

14 mJ

-55 °C (-67 °F)

35 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

0.275 in (6.99 mm)

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

0253.250HXT3L

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

Bulk

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

0239.250MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

340 mJ

-55 °C (-67 °F)

Tin

35 A

2 m

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

0305.250H

Littelfuse

Electric Fuse

Through Hole Mount

277 V

277 V

250 mA

Pin Wire

60.05 mJ

-40 °C (-40 °F)

1.5 kA

2 ms

Bulk

0.614 in (15.6 mm)

Pico

0.354 in (9 mm)

CUL; IEC; UL

46 °C (114.8 °F)

KLK1/4

Littelfuse

Electric Fuse

Inline/Holder

600 V

250 mA

End Cap

100 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)

UL

Fast

0215.250HX

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

545 mJ

-55 °C (-67 °F)

Tin

1.5 kA

Bulk

0.205 in (5.2 mm)

e3

250 V

5 µs

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CE; CUL; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Time Lag

FLA1/4

Littelfuse

Electric Fuse

Inline/Holder

125 V

250 mA

End Cap

10 kA

0.406 in (10.31 mm)

Indicator

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

UL

Slow

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.