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

SPF0012R

Littelfuse

Electric Fuse

Through Hole Mount

1 KV

12 A

Pin Wire

20 kA

SPF

1.53 in (38.86 mm)

1.53 x 0.5 in (38.86 x 12.7 mm)

0.5 in (12.7 mm)

UL

0253012.NRT3

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

Tape And Reel

0.103 in (2.61 mm)

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

L50S012

Littelfuse

Electric Fuse

Inline/Holder

500 V

450 V

12 A

End Cap

200 kA

Rated Breaking Capacity at 450 VDC: 20000 A

0.563 in (14.3 mm)

2 in (50.8 mm)

CE; CSA; UL

Very Fast

L25S012

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

12 A

End Cap

200 kA

Rated Breaking Capacity at 250 VDC: 20000 A

0.563 in (14.3 mm)

2 in (50.8 mm)

CE; CSA; UL

Very Fast

0314012.MX52LEP

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

32612MMXP

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

324012

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

12 A

Pin Wire

570 J

Tin/Lead

750 A

0.275 in (6.99 mm)

e0

0.275 x 1.275 in (6.99 x 32.39 mm)

1.275 in (32.39 mm)

CSA; METI; PSE; UL

Fast

0481012.VX

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

12 A

End Cap

571.2 J

-55 °C (-67 °F)

300 A

5 m

0.701 in (17.8 mm)

0.228 in (5.8 mm)

125 V

Alarm; Indicator

0.772 in (19.6 mm)

CSA; UL

125 °C (257 °F)

Fast

0251012.NXT1

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

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; UL

125 °C (257 °F)

Very Fast

0326012.MXCCP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

12 A

End Cap

-55 °C (-67 °F)

4 h

129

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, TUV, UL

125 °C (257 °F)

Time Lag

SOO012

Littelfuse

Electric Fuse

Inline/Holder

125 V

12 A

End Cap

10 kA

UL

Time Delay

0251012.PAT1L

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

Rated Breaking Capacity at 32 VDC: 300 A

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; UL

125 °C (257 °F)

Very Fast

0251012.NXL

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

0251012.PRT1

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

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

0453012.NRL

Littelfuse

Electric Fuse

Surface Mount

65 V

65 V

12 A

Wraparound

47.97 J

-55 °C (-67 °F)

Silver

50 A

20 s

Pre Arcing Time: Open within 20 s at 200% Rated Current

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e4

65 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

0FLQ012.HXR

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

12 A

End Cap

10 kA

0.406 in (10.31 mm)

500 V

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; UL

Time Delay

0315012.MXP

Littelfuse

Electric Fuse

Through Hole Mount

32 V

12 A

Pin Wire

1.2 kJ

-60 °C (-76 °F)

300 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)

UL

125 °C (257 °F)

Time Lag

KLNR012

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

12 A

End Cap

200 kA

KLNR

Rated Breaking Capacity at 125 VDC: 20000 A

0.563 in (14.3 mm)

2 in (50.8 mm)

CSA; UL

Fast

0253012.MRL

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Tin

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

0326012.VXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

12 A

End Cap

-55 °C (-67 °F)

Nickel

1.5 kA

4 h

129

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, TUV, UL

125 °C (257 °F)

Time Lag

0251012T

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

45.2 J

-55 °C (-67 °F)

Tin

50 A

251

Rated Breaking Capacity at 32 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; UL

125 °C (257 °F)

Very Fast

0481012.HXLMP

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

12 A

End Cap

571.2 J

-55 °C (-67 °F)

300 A

5 m

0.839 in (21.3 mm)

0.228 in (5.8 mm)

125 V

Alarm; Indicator

0.772 in (19.6 mm)

CSA; UL

125 °C (257 °F)

Fast

0253012.HXT3

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

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; UL

125 °C (257 °F)

Very Fast

0481012.V

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

12 A

End Cap

571.2 J

-55 °C (-67 °F)

Tin

300 A

5 m

0.701 in (17.8 mm)

0.228 in (5.8 mm)

e3

125 V

Alarm; Indicator

0.772 in (19.6 mm)

CSA; UL

125 °C (257 °F)

Fast

315012

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

1.2 kJ

Tin/Lead

300 A

0.275 in (6.985 mm)

e0

0.275 x 1.275 in (6.985 x 32.385 mm)

1.275 in (32.385 mm)

CE; CSA; PSE; UL

Slow

0251012.PXT1HF

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

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

276012

Littelfuse

Electric Fuse

Through Hole Mount

32 V

32 V

12 A

Pin Wire

-55 °C (-67 °F)

50 A

276

Rated Breaking Capacity at 32 VDC: 300 A

0.093 in (2.36 mm)

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

CCMR012.HXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

500 V

12 A

End Cap

200 kA

Rated Breaking Capacity at 500 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

0251012.HXL

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

0215012.HXP

Littelfuse

Electric Fuse

Inline/Holder

250 V

12 A

End Cap

515.5 J

-55 °C (-67 °F)

1.5 kA

10 ms

Bulk

0.205 in (5.2 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.787 in (20 mm)

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

125 °C (257 °F)

Time Lag

0251012.HAT1L

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

Rated Breaking Capacity at 32 VDC: 300 A

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; UL

125 °C (257 °F)

Very Fast

FLQ012.T

Littelfuse

Electric Fuse

Inline/Holder

500 V

300 V

12 A

End Cap

-55 °C (-67 °F)

10 kA

0.406 in (10.31 mm)

500 V

Midget

0.406 x 1.5 in (10.31 x 38.1 mm)

1.5 in (38.1 mm)

CSA, UL

125 °C (257 °F)

Time Lag

0215012.MXG

Littelfuse

Electric Fuse

Through Hole Mount

250 V

12 A

Pin Wire

515.5 J

-55 °C (-67 °F)

1.5 kA

515.5

0.217 in (5.5 mm)

250 V

0.197 x 0.787 in (5 x 20 mm)

0.217 x 0.846 in (5.5 x 21.5 mm)

0.846 in (21.5 mm)

125 °C (257 °F)

Time Lag

2410SFV12.0FM/065

Littelfuse

Electric Fuse

12 A

5.3 mJ

-55 °C (-67 °F)

4 h

0.246 in (6.25 mm)

0.104 in (2.64 mm)

125 V

2410

0.246 x 0.104 x 0.093 in (6.25 x 2.64 x 2.36 mm)

0.093 in (2.36 mm)

125 °C (257 °F)

Very Fast

4192120000

Littelfuse

Electric Fuse

Surface Mount

65 V

65 V

12 A

End Cap

52 J

-65 °C (-85 °F)

Silver

50 A

Tape And Reel

0.24 in (6.1 mm)

0.109 in (2.77 mm)

e4

30 s

0.24 x 0.109 x 0.109 in (6.1 x 2.77 x 2.77 mm)

0.109 in (2.77 mm)

CSA; UL

125 °C (257 °F)

Very Fast

07945894352

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

12 A

Tab/Blade

445.01 J

-55 °C (-67 °F)

100 kA

822 µs

Rated Breaking Capacity at 600 VDC: 50000 A

Bulk

0.406 in (10.31 mm)

1.455 ms

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CE; IEC; UL

125 °C (257 °F)

Fast

0481012.HX

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

12 A

End Cap

571.2 J

-55 °C (-67 °F)

300 A

5 m

0.701 in (17.8 mm)

0.228 in (5.8 mm)

125 V

Alarm; Indicator

0.772 in (19.6 mm)

CSA; UL

125 °C (257 °F)

Fast

4192120001

Littelfuse

Electric Fuse

Surface Mount

65 V

65 V

12 A

End Cap

52 J

-65 °C (-85 °F)

Silver

50 A

Tape And Reel

0.24 in (6.1 mm)

0.109 in (2.77 mm)

e4

30 s

0.24 x 0.109 x 0.109 in (6.1 x 2.77 x 2.77 mm)

0.109 in (2.77 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0251012.PRL

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

Rated Breaking Capacity at 32 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; UL

125 °C (257 °F)

Very Fast

L15S12

Littelfuse

Electric Fuse

Inline/Holder

150 V

150 V

12 A

End Cap

100 kA

Rated Breaking Capacity at 150 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)

CSA; UL

Fast

0481012.HM

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

12 A

End Cap

571.2 J

-55 °C (-67 °F)

300 A

5 m

0.701 in (17.8 mm)

0.228 in (5.8 mm)

125 V

Alarm; Indicator

0.772 in (19.6 mm)

CSA; UL

125 °C (257 °F)

Fast

0251012.NRHF

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

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; UL

125 °C (257 °F)

Very Fast

0315012.MXBP

Littelfuse

Electric Fuse

Through Hole Mount

32 V

12 A

Pin Wire

1.2 kJ

-55 °C (-67 °F)

300 A

5 s

Bulk

0.275 in (6.985 mm)

3AG

1.275 in (32.39 mm)

UL

125 °C (257 °F)

Slow

0251012.MXHF

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

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

SPF012R

Littelfuse

Electric Fuse

Through Hole Mount

1 KV

12 A

Pin Wire

599.198 J

20 kA

40 m

1.5 in (38.1 mm)

Midget

0.5 in (12.7 mm)

CCC; CE; IEC; UL; VDE

L25S12

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

12 A

End Cap

200 kA

Rated Breaking Capacity at 250 VDC: 20000 A

0.563 in (14.3 mm)

0.563 x 2 in (14.3 x 50.8 mm)

2 in (50.8 mm)

CSA; UL

Fast

FLSR012

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

12 A

200 kA

FLSR

Rated Breaking Capacity at 300 VDC: 20000 A

0.811 in (20.6 mm)

5 in (127 mm)

CSA; UL

Time Delay

0251012.MRT1L

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

10 s

Pre Arcing Time: Open within 10 s at 200% Rated Current

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; CUL; 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.