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

IDSR.250T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

250 mA

End Cap

200 kA

Rated Breaking Capacity at 600 VDC: 20000 A

Bulk

0.815 in (20.7 mm)

5 in (127 mm)

CSA; UL

Time Delay

0235.250MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

16.6 mJ

-55 °C (-67 °F)

Tin

35 A

5 s

Bulk

0.205 in (5.2 mm)

e3

250 V

0.197 x 0.787 in (5 x 20 mm)

0.787 x 0.205 in (20 x 5.2 mm)

0.787 in (20 mm)

CE, CSA, UL

125 °C (257 °F)

Fast

04910.250MRT1

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

Tape And Reel

0.11 in (2.8 mm)

Pico

0.28 in (7.11 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0230.250P

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

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

0229.250VXSP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

250 mA

End Cap

216 mJ

-55 °C (-67 °F)

Matte Tin

35 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

0.177 in (4.5 mm)

e3

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

3700250041

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

51 mJ

-40 °C (-40 °F)

Matte Tin

35 A

Bulk

0.335 in (8.5 mm)

e3

20 ms

0.335 x 0.315 in (8.5 x 8 mm)

0.315 in (8 mm)

CCC; SEMKO; UL; VDE

85 °C (185 °F)

Fast

3720250043

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

280 mJ

-40 °C (-40 °F)

Matte Tin

35 A

Bulk

0.335 in (8.5 mm)

e3

0.335 x 0.315 in (8.5 x 8 mm)

0.315 in (8 mm)

CCC; KTL; SEMKO; UL; VDE

85 °C (185 °F)

Time Lag

02780.250H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Wire

6.4 mJ

-55 °C (-67 °F)

10 kA

5 s

Bulk

0.235 in (5.97 mm)

125 V

Micro

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

197-250-040

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

19 mJ

-25 °C (-13 °F)

35 A

Bulk

0.213 in (5.4 mm)

120 s

0.197 x 0.787 in (5 x 20 mm)

0.827 in (21 mm)

CUL; UL

70 °C (158 °F)

Medium Time Lag

R271.250

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

250 mA

End Cap

10.6 mJ

-55 °C (-67 °F)

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A, Pre Arcing Time: Open within 1 s at 200% Rated Current

Tape And Reel

0.08 in (2.032 mm)

Nano

0.225 in (5.715 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0876.250MRET1P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

110 mJ

-55 °C (-67 °F)

35 A

3 ms

0.11

Tape And Reel

0.142 in (3.6 mm)

250 V

0.142 x 0.394 in (3.6 x 10 mm)

0.142 x 0.394 in (3.6 x 10 mm)

0.394 in (10 mm)

CCC; CUL; KC; UL

125 °C (257 °F)

Fast

0253.250

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

0.095 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

0253.250NR

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

Rated Breaking Capacity at 125 VDC: 300 A

Tape And Reel

0.11 in (2.8 mm)

125 V

Pico

0.28 in (7.11 mm)

CSA; CUL; QPL; UL

125 °C (257 °F)

Very Fast

0435.250KR

Littelfuse

Electric Fuse

Surface Mount

32 V

250 mA

Wraparound

2.5 mJ

-55 °C (-67 °F)

Matte Tin

35 A

435

Rated Breaking Capacity at 32 VDC: 35 A

Tape And Reel

0.039 in (0.99 mm)

0.02 in (0.51 mm)

e3

0.039 x 0.02 x 0.012 in (0.99 x 0.51 x 0.3 mm)

0.012 in (0.3 mm)

CSE; UL

90 °C (194 °F)

Fast

0676.250DRT4

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

25 mJ

Tin Lead

35 A

0.025

Tape And Reel

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

0229.250MXSP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

250 mA

End Cap

216 mJ

-55 °C (-67 °F)

Matte Tin

35 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

0.177 in (4.5 mm)

e3

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

0263.250MAT1HF

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

2750250005

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

7 mJ

-25 °C (-13 °F)

50 A

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

0.094 in (2.4 mm)

5 s

Pico

0.283 in (7.2 mm)

CUL; UL

70 °C (158 °F)

Very Fast

37302500000

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

14 mJ

-40 °C (-40 °F)

Tin

50 A

5 s

Ammo Pack; Tape

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)

CSA; CUL; UL

85 °C (185 °F)

Very Fast

R451.250

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

250 mA

Wraparound

11.3 mJ

50 A

125 V

Nano

CSA; UL

Very Fast

04910.250MAT1HF

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

0326.250MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

250 mA

End Cap

804 mJ

-55 °C (-67 °F)

Nickel

100 A

5 s

Rated Breaking Capacity at 125 VDC: 10000 A

0.432

Bulk

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 Delay

37002500430

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

51 mJ

-40 °C (-40 °F)

Tin

35 A

20 ms

Ammo Pack; Tape

0.335 in (8.5 mm)

e3

TR5

0.315 in (8 mm)

CCC; CE; CUL; VDE; UL

85 °C (185 °F)

Fast

04370.250WRA

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

250 mA

Wraparound

3 mJ

-55 °C (-67 °F)

50 A

5 s

Tape And Reel

0.126 in (3.2 mm)

0.064 in (1.63 mm)

1206

0.033 in (0.835 mm)

AEC-Q200; CSA; CUL; UL

150 °C (302 °F)

Fast

3912500000

Littelfuse

Electric Fuse

Through Hole Mount

65 V

65 V

250 mA

Pin Wire

12 mJ

-40 °C (-40 °F)

50 A

2 s

Rated Breaking Capacity at 65 VDC: 50 A

Ammo Pack

0.335 in (8.5 mm)

0.157 in (4 mm)

TE5

0.315 in (8 mm)

CSA, UL

125 °C (257 °F)

Fast

3720250051

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

280 mJ

-40 °C (-40 °F)

Matte Tin

35 A

Bulk

0.335 in (8.5 mm)

e3

20 ms

0.335 x 0.315 in (8.5 x 8 mm)

0.315 in (8 mm)

CCC; KTL; SEMKO; UL; VDE

85 °C (185 °F)

Time Lag

201P0250043

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

130 mJ

-25 °C (-13 °F)

Tin

80 A

Tape And Reel

0.205 in (5.2 mm)

e3

250 V

5 ms

0.205 x 0.787 in (5.2 x 20 mm)

0.787 in (20 mm)

UL

70 °C (158 °F)

Medium Time Lag

215.250P

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

545 mJ

-55 °C (-67 °F)

Tin

1.5 kA

215P

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; KTL; PSE; SEMKO; UL; VDE

125 °C (257 °F)

Time Lag

0263.250MXT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

16.5 mJ

-55 °C (-67 °F)

Matte Tin

50 A

4 h

0.0165

Bulk

0.155 in (3.94 mm)

e3

250 V

Pico

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

216.250

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

250 mA

End Cap

8.91 mJ

-55 °C (-67 °F)

Nickel

1.5 kA

0.0092

Bulk; Tape And Reel

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; SEMKO; UL

125 °C (257 °F)

Fast

3250.25MVXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

250 mA

Pin Wire

432 mJ

-55 °C (-67 °F)

Matte Tin

100 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

0.275 in (6.99 mm)

e3

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)

Time Lag

0325.250VXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

250 mA

Pin Wire

-55 °C (-67 °F)

Tin

4 h

0.432

0.275 in (6.985 mm)

e3

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

374025000

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

170 mJ

-40 °C (-40 °F)

Matte Tin

50 A

1 m

Ammo Pack; Tape

0.335 in (8.5 mm)

e3

TR5

0.315 in (8 mm)

CSA; UL

85 °C (185 °F)

Time Lag

0251.250PX

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

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

37402500430

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

313 mJ

-40 °C (-40 °F)

Tin

50 A

1 m

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)

CSA, UL

85 °C (185 °F)

Time Lag

0253.250VRL

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

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; QPL; UL

125 °C (257 °F)

Very Fast

288.250

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

30 mJ

35 A

288

0.177 in (4.5 mm)

0.177 x 0.57 in (4.5 x 14.48 mm)

0.57 in (14.48 mm)

CSA; MIL; PSE; UL

Fast

216.250PV

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 mA

End Cap

8.91 mJ

-55 °C (-67 °F)

Matte Tin

1.5 kA

216P

Bulk

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; IEC; SEMKO; UL; VDE

125 °C (257 °F)

Fast

0253.250HAL

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

Ammo Pack

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

0230.250MXF23OP

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

37202500001

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

Ammo Pack; Tape

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

0253.250PAT3L

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

0663.250HXSL

Littelfuse

Electric Fuse

250 mA

-40 °C (-40 °F)

35 A

0.6

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

KLKR.250T

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

250 mA

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

0253.250NRL

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

0274.250H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

250 mA

Pin Wire

6.4 mJ

-55 °C (-67 °F)

Tin

10 kA

4 h

Bulk

0.25 in (6.35 mm)

e3

125 V

Micro

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

0253.250PXT3

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

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

230.250PDRTIP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 mA

Pin Wire

216 mJ

-55 °C (-67 °F)

Tin

35 A

Tape And Reel

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; GR; PSE; TIA; UL

125 °C (257 °F)

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.