12 A Fuses 495

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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

0251012.VXT1L

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Matte Tin

50 A

Rated Breaking Capacity at 32 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; UL

125 °C (257 °F)

Very Fast

0251012T1

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Pure Tin

50 A

0251

Rated Breaking Capacity at 32 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; PSE; UL

125 °C (257 °F)

Very Fast

326012

Littelfuse

Electric Fuse

Inline/Holder

250 V

12 A

End Cap

129 J

129

0.25 in (6.35 mm)

Supplemental

250 V

3AB

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CSA

Slow

594012

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

12 A

End Cap

Nickel

594

32612MHXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

60 V

12 A

End Cap

129 J

-55 °C (-67 °F)

Matte Tin

400 A

Rated Breaking Capacity at 60 VDC: 500 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; KTL; PSE; UL

125 °C (257 °F)

Time Lag

0388012.MXL

Littelfuse

Electric Fuse

Inline/Holder

250 V

12 A

End Cap

490.5 J

-55 °C (-67 °F)

Nickel

100 A

388

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; KTL; PSE

125 °C (257 °F)

L15S012

Littelfuse

Electric Fuse

Inline/Holder

150 V

150 V

12 A

End Cap

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 150 VDC: 20000 A

0.406 in (10.3 mm)

1.5 in (38.1 mm)

CSA; UL

125 °C (257 °F)

Very Fast

CY10X38G12

Littelfuse

Electric Fuse

Inline/Holder

500 V

12 A

End Cap

120 kA

0.394 in (10 mm)

500 V

0.394 x 1.496 in (10 x 38 mm)

0.394 x 1.496 in (10 x 38 mm)

1.496 in (38 mm)

IEC

Fast

ITV4030L0812NR

Littelfuse

Electric Fuse

Surface Mount

36 V

12 A

Wraparound

-10 °C (14 °F)

50 A

Tape And Reel, 13 inch

0.157 in (4 mm)

0.118 in (3 mm)

36 V

0.035 in (0.9 mm)

CUL; TUV; UL

65 °C (149 °F)

RLS012

Littelfuse

Electric Fuse

Inline/Holder

600 V

12 A

End Cap

10 kA

0.811 in (20.6 mm)

5 in (127 mm)

CE; CSA; UL

0253012.NRT3L

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Tin Over Copper

50 A

0253

Rated Breaking Capacity at 32 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; UL

125 °C (257 °F)

Very Fast

215012.

Littelfuse

Electric Fuse

Inline/Holder

250 V

12 A

End Cap

515.5 J

-55 °C (-67 °F)

Nickel

1.5 kA

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; IEC; KTL; PSE; UL

125 °C (257 °F)

Time Lag

0314012.MX52LP

Littelfuse

Electric Fuse

Inline/Holder

250 V

12 A

End Cap

570 J

-55 °C (-67 °F)

Nickel

750 A

570

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, PSE, UL

125 °C (257 °F)

Fast

BLN012

Littelfuse

Electric Fuse

Inline/Holder

250 V

12 A

End Cap

10 kA

2 m

Bulk

0.406 in (10.31 mm)

250 V

5AG

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; PSE; UL

Fast

FLSR012.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

12 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

0.815 in (20.7 mm)

5 in (127 mm)

CSA; UL

Time Delay

IDSR012ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

12 A

200 kA

IDSR

Rated Breaking Capacity at 600 VDC: 20000 A

Indicator

CSA; UL

Time Delay

SPFI012.T

Littelfuse

Electric Fuse

Inline/Holder

1 KV

12 A

End Cap

642 J

20 kA

4 m

642

Bulk

0.406 in (10.31 mm)

0.406 x 2.5 in (10.31 x 63.5 mm)

2.5 in (63.5 mm)

CE, TUV, UL

0215012.MXBP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

12 A

Pin Wire

515.5 J

-55 °C (-67 °F)

1.5 kA

10 ms

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

Bulk

0.217 in (5.5 mm)

0.197 x 0.787 in (5 x 20 mm)

0.846 in (21.5 mm)

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

125 °C (257 °F)

Time Lag

0448012.MR

Littelfuse

Electric Fuse

Surface Mount

65 V

85 V

12 A

Wraparound

47.59 J

-55 °C (-67 °F)

Gold

50 A

20 s

Rated Breaking Capacity at 85 VDC: 200 A

47.59

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

85 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)

CSA; UL

125 °C (257 °F)

Very Fast

0388012.MXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

12 A

End Cap

-55 °C (-67 °F)

Tin

100 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; KTL; PSE

125 °C (257 °F)

0251012.PXL

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Tin

50 A

10 s

Pre Arcing Time: Open within 10 s 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; CUL; UL

125 °C (257 °F)

Very Fast

CY14X51M12

Littelfuse

Electric Fuse

Inline/Holder

690 V

12 A

End Cap

80 kA

0.551 in (14 mm)

690 V

0.551 x 2.008 in (14 x 51 mm)

0.551 x 2.008 in (14 x 51 mm)

2.008 in (51 mm)

IEC

Time Lag

0251012.MAT1

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Pure Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A, Pre Arcing Time: Open within 10000 ms at 200% Rated Current

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; UL

125 °C (257 °F)

Very Fast

0453012NR

Littelfuse

Electric Fuse

Surface Mount

65 V

65 V

12 A

Wraparound

47.97 J

-55 °C (-67 °F)

Silver

50 A

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

65 V

Nano

0.106 in (2.69 mm)

CSA; CUL; UL

125 °C (257 °F)

Very Fast

0251012.HAT1HF

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Matte Tin

50 A

251

Rated Breaking Capacity at 32 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; UL

125 °C (257 °F)

Very Fast

0253012.NAT3

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Pure Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A, Pre Arcing Time: Open within 10000 ms at 200% Rated Current

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; UL

125 °C (257 °F)

Very Fast

0505012.MXEP

Littelfuse

Electric Fuse

Through Hole Mount

450 V

250 V

12 A

Pin Wire

192 J

-55 °C (-67 °F)

Tin

20 kA

10 s

Rated Breaking Capacity at 250 VDC: 1000 A

192

Bulk

0.275 in (6.985 mm)

e3

450 V

3AB

0.275 x 1.288 in (6.99 x 32.72 mm)

1.288 in (32.72 mm)

CCC; CE; CUL; SEMKO; UL

125 °C (257 °F)

Fast

KLKD12-R

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

12 A

End Cap

100 kA

Rated Breaking Capacity at 600 VDC: 10000 A

0.406 in (10.31 mm)

0.406 x 1.53 in (10.31 x 38.86 mm)

1.53 in (38.86 mm)

CE; UL

Fast

0CBO012.V

Littelfuse

Electric Fuse

Inline/Holder

32 V

12 A

Tab/Blade

10 kA

0.812 in (20.62 mm)

1.623 in (41.23 mm)

Fast

0505012.MX52LEP

Littelfuse

Electric Fuse

Through Hole Mount

450 V

250 V

12 A

Pin Wire

192 J

-55 °C (-67 °F)

Tin

20 kA

10 s

Rated Breaking Capacity at 250 VDC: 1000 A

Bulk

0.275 in (6.985 mm)

e3

450 V

3AB

1.288 in (32.72 mm)

CCC; CE; CUL; SEMKO; UL

125 °C (257 °F)

Fast

0251012.PX

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A, Pre Arcing Time: Open within 10000 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; UL

125 °C (257 °F)

Very Fast

256012

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

0.095 in (2.41 mm)

0.095 x 0.28 in (2.41 x 7.11 mm)

0.28 in (7.11 mm)

Fast

IDSR012

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

12 A

End Cap

200 kA

Rated Breaking Capacity at 600 VDC: 20000 A

Bulk

0.815 in (20.7 mm)

0.752 x 5 in (19.1 x 127 mm)

5 in (127 mm)

CSA; UL

Time Delay

BLF012.

Littelfuse

Electric Fuse

Inline/Holder

250 V

12 A

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

Fast

LLSRK012ID

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

12 A

End Cap

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

0.811 in (20.6 mm)

Indicator

0.811 x 5 in (20.6 x 127 mm)

5 in (127 mm)

CSA; UL

Time Delay

IDSR012.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

12 A

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

0315012.VXP

Littelfuse

Electric Fuse

Through Hole Mount

32 V

12 A

Pin Wire

1.2 kJ

-55 °C (-67 °F)

Matte Tin

300 A

315

Bulk

0.275 in (6.99 mm)

e3

0.275 x 1.275 in (6.99 x 32.39 mm)

1.275 in (32.39 mm)

UL

125 °C (257 °F)

Time Lag

0481012.

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

12 A

End Cap

222.5 J

-55 °C (-67 °F)

Tin

300 A

481

Rated Breaking Capacity at 125 VDC: 200 A, Joule Integral Nom at 125 VDC: 222.5

Box

e3

Alarm

CSA; UL

125 °C (257 °F)

0452012.NRSN

Littelfuse

Electric Fuse

Surface Mount

72 V

75 V

12 A

Wraparound

260.46 J

-55 °C (-67 °F)

50 A

2 ms

Rated Breaking Capacity at 75 VDC: 100 A

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

72 V

Nano

0.106 in (2.69 mm)

CSA; CUL; UL

125 °C (257 °F)

Slow

0253012.PRT3L

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Tin Over Copper

50 A

0253

Rated Breaking Capacity at 32 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; UL

125 °C (257 °F)

Very Fast

FLQ012

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

12 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

KLKD012.HXR

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

12 A

End Cap

440 J

-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 0.406 x 1.5 in (38.1 x 10.31 x 38.1 mm)

1.5 in (38.1 mm)

CE; CSA; IEC; UL

125 °C (257 °F)

Fast

FLNR012

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

12 A

End Cap

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

Bulk

0.563 in (14.3 mm)

0.563 x 2 in (14.3 x 50.8 mm)

2 in (50.8 mm)

CSA; UL

Time Delay

0481012H

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

12 A

End Cap

222.5 J

-55 °C (-67 °F)

Tin

300 A

481

Rated Breaking Capacity at 125 VDC: 200 A

Bulk

e3

Alarm

CSA; UL

90 °C (194 °F)

ITV4030L0412NR

Littelfuse

Electric Fuse

Surface Mount

36 V

12 A

Wraparound

-10 °C (14 °F)

50 A

Tape And Reel, 13 inch

0.157 in (4 mm)

0.118 in (3 mm)

36 V

0.035 in (0.9 mm)

CUL; TUV; UL

65 °C (149 °F)

SPXV012.T

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

12 A

End Cap

798 J

Nickel

30 kA

4 m

Bulk

0.406 in (10.31 mm)

GPV

1.5 KV

0.394 x 3.346 in (10 x 85 mm)

0.409 x 3.358 in (10.4 x 85.3 mm)

3.333 in (84.65 mm)

CUL; TUV; UL

Fast

0253012.PXL

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Tin

50 A

Rated Breaking Capacity at 32 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; UL

125 °C (257 °F)

Very Fast

0251012.HAT1

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Pure Tin

50 A

Rated Breaking Capacity at 125 VDC: 300 A, Pre Arcing Time: Open within 10000 ms at 200% Rated Current

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; UL

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.