1.25 A Fuses 748

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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

02161.25MXE

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

480 mJ

-55 °C (-67 °F)

Tin

1.2 kA

Bulk

0.228 in (5.8 mm)

e3

0.228 x 0.886 in (5.8 x 22.5 mm)

0.886 in (22.5 mm)

CCC; CE; CSA; KTL; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Fast

1981125002

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

15 J

-25 °C (-13 °F)

100 A

Bulk

0.205 in (5.2 mm)

5 s

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

CSA; UL

70 °C (158 °F)

Time Delay

2411125002

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

6.8 J

-25 °C (-13 °F)

Nickel

80 A

Bulk

0.205 in (5.2 mm)

250 V

5 ms

0.197 x 0.984 in (5 x 25 mm)

Indicator

0.205 x 0.984 in (5.2 x 25 mm)

0.984 in (25 mm)

70 °C (158 °F)

Medium Time Lag

1206SFS125FM/63

Littelfuse

Electric Fuse

Surface Mount

63 V

1.25 A

End Cap

-55 °C (-67 °F)

Rated Breaking Capacity at 63 VDC: 50 A

0.134 in (3.4 mm)

0.071 in (1.8 mm)

0.134 x 0.071 x 0.046 in (3.4 x 1.8 x 1.17 mm)

0.046 in (1.17 mm)

UL

125 °C (257 °F)

Slow

80711250440

Littelfuse

Electric Fuse

Through Hole Mount

300 V

300 V

1.25 A

Wire

3 kJ

-40 °C (-40 °F)

Tin

100 A

1 s

Bulk

0.488 in (12.4 mm)

0.252 in (6.4 mm)

e3

300 V

0.488 x 0.252 x 0.362 in (12.4 x 6.4 x 9.2 mm)

0.362 in (9.2 mm)

IEC; CUL; PSE; UL

125 °C (257 °F)

Time Lag

R451.125MR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

1.25 A

Wraparound

664 mJ

-55 °C (-67 °F)

Tin/Lead

50 A

5 s

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

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e0

Nano

0.106 in (2.69 mm)

CSA; UL

125 °C (257 °F)

Very Fast

06771.25DRT4

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

1.25 A

Pin Wire

12.1 J

Tin Lead

35 A

12.1

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; IEC; UL; VDE

Slow

03151.25MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

24 J

-60 °C (-76 °F)

100 A

5 s

Bulk

0.275 in (6.99 mm)

3AG

1.273 x 0.275 in (32.34 x 6.98 mm)

1.288 in (32.72 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

CCMR1.25TXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

1.25 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.406 in (10.3 mm)

600 V

0.406 x 1.5 in (10.3 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; UL

Time Delay

04071.25WR

Littelfuse

Electric Fuse

Surface Mount

63 V

63 V

1.25 A

Wraparound

329 mJ

-55 °C (-67 °F)

50 A

2 ms

Tape And Reel

0.126 in (3.2 mm)

0.064 in (1.63 mm)

63 V

200 mΩ

1206

0.033 in (0.835 mm)

UL

150 °C (302 °F)

Time Lag

02301.25MXF16OP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

1.25 A

Pin Wire

9.8 J

-55 °C (-67 °F)

Matte Tin

100 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; PSE; UL

125 °C (257 °F)

Time Lag

1971125000

Littelfuse

Electric Fuse

1.25 A

-25 °C (-13 °F)

100 A

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)

CSA, UL

70 °C (158 °F)

Medium

04331.25NR

Littelfuse

Electric Fuse

Surface Mount

63 V

63 V

1.25 A

Wraparound

65 mJ

-55 °C (-67 °F)

Tin Lead

50 A

433

Rated Breaking Capacity at 63 VDC: 50 A

Tape And Reel

0.125 in (3.18 mm)

0.06 in (1.52 mm)

e0

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

39711250440

Littelfuse

Electric Fuse

Through Hole Mount

125 V

1.25 A

Pin Wire

7.34 J

-40 °C (-40 °F)

Tin

50 A

3 m 20 s

5

Bulk

0.335 in (8.5 mm)

0.315 in (8 mm)

e3

125 V

TE5

0.335 x 0.157 x 0.315 in (8.5 x 4 x 8 mm)

0.157 in (4 mm)

CUL; UL

125 °C (257 °F)

Slow

R451.125

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

1.25 A

End Cap

664 mJ

Tin/Lead

50 A

e0

CSA; PSE; UL

Very Fast

02291.25HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

1.25 A

End Cap

9.8 J

-55 °C (-67 °F)

Matte Tin

100 A

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

0.177 in (4.5 mm)

e3

Indicator

0.177 x 0.57 in (4.5 x 14.48 mm)

0.57 in (14.48 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

04341.25

Littelfuse

Electric Fuse

Surface Mount

32 V

32 V

1.25 A

Wraparound

32 mJ

-55 °C (-67 °F)

Tin/Lead with Nickel barrier

35 A

Rated Breaking Capacity at 32 VDC: 35 A

Tape And Reel

0.063 in (1.6 mm)

0.032 in (0.813 mm)

e0

0.063 x 0.032 x 0.012 in (1.6 x 0.813 x 0.305 mm)

0.012 in (0.305 mm)

CSA; UL

90 °C (194 °F)

Very Fast

3261.25MHXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

1.25 A

End Cap

24 J

-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; PSE; UL

125 °C (257 °F)

Time Lag

06621.25ZRLL

Littelfuse

Electric Fuse

Through Hole Mount

250 V

250 V

1.25 A

Pin Wire

680 mJ

-40 °C (-40 °F)

Tin

35 A

662

Rated Breaking Capacity at 250 VDC: 35 A

Tape And Reel

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

03181.25P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

1.45 J

-55 °C (-67 °F)

Matte Tin

100 A

318

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; KTL; PSE; UL

125 °C (257 °F)

Fast

37411250430

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

4.453 J

-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

2161.25PM

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

477 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)

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

125 °C (257 °F)

Fast

02200025ERT1P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

9.8 J

-55 °C (-67 °F)

Tin

100 A

4 h

9.8

0.177 in (4.5 mm)

Supplemental

e3

250 V

2AG

0.177 x 0.57 in (4.5 x 14.48 mm)

0.57 in (14.48 mm)

CE, CSA, PSE, UL

125 °C (257 °F)

2171.25

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

1.25 A

End Cap

2.23 J

-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; IEC; PSE; SEMKO; VDE

125 °C (257 °F)

Fast

02131.25

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

27.15 J

-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; PSE; SEMKO; UL

125 °C (257 °F)

Time Lag

35611250029

Littelfuse

Electric Fuse

Inline/Holder

440 V

1.25 A

End Cap

3.1 J

-25 °C (-13 °F)

Nickel

1 kA

10 ms

Pre Arcing Time: Open within 0.01 s at 1000% Rated Current

Bulk

0.25 in (6.35 mm)

3AB

0.248 x 1.26 in (6.3 x 32 mm)

1.25 in (31.75 mm)

CE; CUL; UL

70 °C (158 °F)

Slow

80411250440

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Wire

30 J

-40 °C (-40 °F)

Tin

150 A

1 s

Bulk

0.488 in (12.4 mm)

0.252 in (6.4 mm)

e3

250 V

TE7

0.488 x 0.252 x 0.386 in (12.4 x 6.4 x 9.8 mm)

0.362 in (9.2 mm)

125 °C (257 °F)

Time Lag

3251.25MVXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

1.25 A

Pin Wire

24 J

-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; PSE; UL

125 °C (257 °F)

Time Lag

2131.25XP

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

27.15 J

-55 °C (-67 °F)

Matte Tin

100 A

213

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; PSE; SEMKO; UL

125 °C (257 °F)

Time Lag

03251.25MXF31P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

40 J

-55 °C (-67 °F)

Tin

4 h

24

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, PSE, UL

125 °C (257 °F)

Time Lag

04481.25

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

1.25 A

End Cap

900 mJ

-55 °C (-67 °F)

Gold

50 A

Rated Breaking Capacity at 125 VDC: 50 A

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; METI; PSE; UL

125 °C (257 °F)

Very Fast

02191.25XE

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

5.8 J

150 A

219

0.228 in (5.8 mm)

0.228 x 0.886 in (5.8 x 22.5 mm)

0.886 in (22.5 mm)

BSI; CCC; CSA; IEC; KTL; METI; PSE; SEMKO; UL; VDE

Time Lag

03621.25H

Littelfuse

Electric Fuse

Inline/Holder

32 V

32 V

1.25 A

End Cap

Bulk

0.25 in (6.35 mm)

32 V

8AG

1 in (25.4 mm)

Normal

02171.25MRET1P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

2.23 J

-55 °C (-67 °F)

35 A

10 ms

Pre Arcing Time: Open within 10 ms at 400% Rated Current

Tape And Reel

0.217 in (5.5 mm)

0.197 x 0.787 in (5 x 20 mm)

0.846 in (21.5 mm)

CCC; CE; CSA; CUL; KC; PSE; SEMKO; SEV; UL; VDE

125 °C (257 °F)

Fast

02341.25

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

3.48 J

-55 °C (-67 °F)

Nickel

100 A

Pre-Arcing Time: Open within 0.4 s, at 200% Rated Current

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)

CE; CSA; KTL; PSE; UL

125 °C (257 °F)

Medium

02331.25MXEP

Littelfuse

Electric Fuse

Through Hole Mount

125 V

1.25 A

Pin Wire

3.39 J

-55 °C (-67 °F)

Matte Tin

10 kA

600 ms

Bulk

0.217 in (5.5 mm)

e3

0.197 x 0.787 in (5 x 20 mm)

0.228 x 0.886 in (5.8 x 22.5 mm)

0.827 in (21 mm)

CE; CSA; KC; PSE; UL

125 °C (257 °F)

Medium

04691.25WR

Littelfuse

Electric Fuse

Surface Mount

63 V

1.25 A

Wraparound

-55 °C (-67 °F)

Tin Over Nickel

50 A

4 h

Tape And Reel

0.129 in (3.27 mm)

0.064 in (1.63 mm)

e3

63 V

1206

0.129 x 0.064 x 0.035 in (3.27 x 1.63 x 0.9 mm)

0.035 in (0.9 mm)

CSA; UL

150 °C (302 °F)

Slow

1961125000

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

22 J

-25 °C (-13 °F)

150 A

Bulk

0.205 in (5.2 mm)

20 ms

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

BSI; CUL; IEC; SEMKO; UL; VDE

70 °C (158 °F)

Time Lag

FLQ1.25R

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

1.25 A

End Cap

10 kA

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; UL

Time Delay

3541125002

Littelfuse

Electric Fuse

Inline/Holder

440 V

1.25 A

End Cap

1.8 J

-25 °C (-13 °F)

Nickel

1 kA

Bulk

0.248 in (6.3 mm)

440 V

20 ms

3AB

0.248 x 1.26 in (6.3 x 32 mm)

1.26 in (32 mm)

UL

70 °C (158 °F)

Fast

5931.25S

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

Silver

0.394 in (10 mm)

e4

0.394 x 1.496 in (10 x 38 mm)

1.496 in (38 mm)

MIL-PRF-15160

Time Delay

02511.25NXT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

1.25 A

Pin Wire

390 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; PSE; UL

125 °C (257 °F)

Very Fast

03121.25HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

1.45 J

-55 °C (-67 °F)

Tin

100 A

5 s

Tape And Reel

0.25 in (6.35 mm)

e3

250 V

3AG

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CE; CSA; KC; PSE; UL

125 °C (257 °F)

Fast

02531.25HXT3

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

1.25 A

Pin Wire

390 mJ

-55 °C (-67 °F)

Pure 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)

0.11 x 0.28 in (2.8 x 7.11 mm)

0.28 in (7.11 mm)

CSA; PSE; UL

125 °C (257 °F)

Very Fast

2151.25P

Littelfuse

Electric Fuse

Inline/Holder

250 V

1.25 A

End Cap

4.24 J

-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

02301.25MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

1.25 A

Pin Wire

16.8 J

-55 °C (-67 °F)

Matte Tin

100 A

3 s

Rated Breaking Capacity at 125 VDC: 10000 A

Bulk

0.189 in (4.8 mm)

e3

2AG

0.185 x 0.57 in (4.7 x 14.48 mm)

0.587 in (14.9 mm)

CE; CSA; PSE; UL

125 °C (257 °F)

Time Lag

201P1125000

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

3.2 J

-25 °C (-13 °F)

Tin

80 A

Bulk

0.232 in (5.9 mm)

e3

250 V

5 ms

0.232 x 0.827 in (5.9 x 21 mm)

0.827 in (21 mm)

UL

70 °C (158 °F)

Medium Time Lag

02200025DRT2P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

1.25 A

Pin Wire

9.8 J

-55 °C (-67 °F)

Tin

100 A

4 h

9.8

0.177 in (4.5 mm)

Supplemental

e3

250 V

2AG

0.177 x 0.57 in (4.5 x 14.48 mm)

0.57 in (14.48 mm)

CE, CSA, PSE, UL

125 °C (257 °F)

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.