125 mA Fuses 670

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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

2010125002

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 mA

End Cap

33 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

0326.125HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

125 mA

End Cap

100 mJ

-55 °C (-67 °F)

Nickel

100 A

4 h

0.1

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

125 °C (257 °F)

Time Lag

277.125

Littelfuse

Electric Fuse

125 V

125 V

125 mA

277

04910.125MRT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 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

0451.125NR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

125 mA

Wraparound

2.86 mJ

-55 °C (-67 °F)

50 A

4 h

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e0

125 V

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)

CE; CSA; UL

125 °C (257 °F)

Very Fast

0239.125MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 mA

End Cap

85 mJ

-55 °C (-67 °F)

Tin

35 A

2 m

0.085

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; UL

125 °C (257 °F)

Time Lag

288.125

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 mA

End Cap

2.86 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

0433.125

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

125 mA

Wraparound

400 μJ

-55 °C (-67 °F)

Tin Lead Over Nickel

50 A

200 ms

Pre Arcing Time: Open within 0.2 s at 300% Rated Current

0.125 in (3.18 mm)

0.06 in (1.52 mm)

e0

125 V

1206

0.125 x 0.06 x 0.023 in (3.18 x 1.52 x 0.58 mm)

0.023 in (0.58 mm)

CSA; UL

90 °C (194 °F)

Very Fast

0263.125HXT1HF

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

2.51 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

0253.125NXL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 mJ

-55 °C (-67 °F)

Tin

50 A

0253

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

0253.125PXL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 mJ

-55 °C (-67 °F)

Tin

50 A

0253

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

37401250430

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

52 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

0362.125M

Littelfuse

Electric Fuse

Inline/Holder

32 V

32 V

125 mA

End Cap

Bulk

0.25 in (6.35 mm)

32 V

8AG

1 in (25.4 mm)

Normal

IDSR.125

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

125 mA

End Cap

200 kA

Rated Breaking Capacity at 600 VDC: 20000 A

0.752 in (19.1 mm)

0.752 x 5 in (19.1 x 127 mm)

5 in (127 mm)

CE; CSA; UL

Time Delay

3430125002

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 mA

End Cap

280 mJ

-25 °C (-13 °F)

35 A

Bulk

0.248 in (6.3 mm)

5 s

0.248 x 1.26 in (6.3 x 32 mm)

1.26 in (32 mm)

CSA; UL

70 °C (158 °F)

Time Delay

0253.125T

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 mJ

-55 °C (-67 °F)

Tin

50 A

253

Rated Breaking Capacity at 125 VDC: 300 A

Tape And Reel

0.095 in (2.41 mm)

e3

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

216.125XP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 mA

End Cap

5.6 mJ

-55 °C (-67 °F)

Matte Tin

1.5 kA

216

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; SEMKO; UL

125 °C (257 °F)

Fast

0253.125NAL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 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

1980125040

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

66 mJ

-25 °C (-13 °F)

35 A

Bulk

0.213 in (5.4 mm)

5 s

0.197 x 0.787 in (5 x 20 mm)

0.827 in (21 mm)

CSA; UL

70 °C (158 °F)

Time Delay

0451.125NRL

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

125 mA

Wraparound

2.86 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

04910.125MAT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 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

0263.125HXT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

2.51 mJ

-55 °C (-67 °F)

Tin

50 A

Bulk

0.155 in (3.94 mm)

e3

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

0318.125VX

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

2.89 mJ

-55 °C (-67 °F)

Tin

35 A

318

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)

Fast

0251.125PAT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 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

37401250410

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

52 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

1930125040

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

14 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

0672.125

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

2.89 mJ

Tin Lead

50 A

672

0.154 in (3.9 mm)

e0

0.154 x 0.433 in (3.9 x 11 mm)

0.433 in (11 mm)

CSA; UL

Fast

0208.125DRT1

Littelfuse

Electric Fuse

125 mA

End Cap

-55 °C (-67 °F)

100 A

4 h

0.0028

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

0662.125

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

125 mA

Pin Wire

6 mJ

-40 °C (-40 °F)

Matte Tin

35 A

Rated Breaking Capacity at 250 VDC: 35 A

0.335 in (8.5 mm)

e3

0.335 x 0.333 in (8.5 x 8.45 mm)

0.333 in (8.45 mm)

CCC; KTL; PSE; UL; VDE

85 °C (185 °F)

Fast

0453.125MRL

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

125 mA

Wraparound

2.86 mJ

-55 °C (-67 °F)

Silver

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; UL

125 °C (257 °F)

Very Fast

0253.125MAL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 mJ

-55 °C (-67 °F)

Tin

50 A

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

0263.125VRT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

2.51 mJ

-55 °C (-67 °F)

Pure Tin

50 A

Tape And Reel

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

0314.125MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

125 mA

End Cap

1.49 mJ

-55 °C (-67 °F)

35 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

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

125 °C (257 °F)

Fast

0279.125V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

-55 °C (-67 °F)

Tin

100 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, UL

85 °C (185 °F)

Very Fast

0274.125V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

-55 °C (-67 °F)

Tin

100 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, UL

125 °C (257 °F)

Very Fast

236.125

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

2.8 mJ

236

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

Fast

KLKD.125T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

125 mA

End Cap

-55 °C (-67 °F)

100 kA

4 m

0.406 in (10.31 mm)

600 V

0.394 x 1.496 in (10 x 38 mm)

1.5 x 1.5 in (38.1 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; IEC; UL

125 °C (257 °F)

Fast

0325.125HXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

125 mA

Pin Wire

100 mJ

-55 °C (-67 °F)

Tin

100 A

4 h

0.1

Bulk

0.275 in (6.99 mm)

e3

250 V

3AB

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CE

125 °C (257 °F)

Time Lag

0208.125MXEP

Littelfuse

Electric Fuse

Through Hole Mount

350 V

125 mA

Pin Wire

2.86 mJ

-55 °C (-67 °F)

Tin

100 A

208

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; UL

125 °C (257 °F)

Fast

KLKD1/8

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

125 mA

End Cap

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 600 VDC: 50000 A

Bulk

0.406 in (10.31 mm)

50 µs

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

04910.125NAT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 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

0251.125NX

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 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

0253.125HRT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 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

0215.125MXEP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

125 mA

Pin Wire

33 mJ

-55 °C (-67 °F)

Nickel

1.5 kA

5 ms

Pre Arcing Time: Open within 5 ms at 1000% Rated Current

0.033

Bulk

0.236 in (6 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.236 x 0.886 in (6 x 22.5 mm)

0.886 in (22.5 mm)

CE; IEC; SEMKO; UL

125 °C (257 °F)

Time Lag

KLDR.125

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

125 mA

End Cap

700 μJ

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

0251.125.NRT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

125 mA

Pin Wire

1.74 mJ

-55 °C (-67 °F)

Tin

50 A

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

263.125

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 mA

Pin Wire

2.51 mJ

-55 °C (-67 °F)

Tin/Lead

50 A

Tape And Reel

0.145 in (3.68 mm)

e0

0.145 x 0.3 in (3.68 x 7.62 mm)

0.3 in (7.62 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0267.125VXT

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 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

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.