750 mA Fuses 661

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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

0434.750NR

Littelfuse

Electric Fuse

Surface Mount

32 V

32 V

750 mA

Wraparound

17.1 mJ

-55 °C (-67 °F)

Tin

50 A

434

Rated Breaking Capacity at 32 VDC: 50 A

Tape And Reel

0.063 in (1.6 mm)

0.032 in (0.81 mm)

e3

0.063 x 0.032 x 0.012 in (1.6 x 0.81 x 0.31 mm)

0.012 in (0.31 mm)

CSA; UL

90 °C (194 °F)

Very Fast

0312.750HX

Littelfuse

Electric Fuse

Inline/Holder

250 V

750 mA

End Cap

1.84 J

-55 °C (-67 °F)

Tin

35 A

312

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; UL

125 °C (257 °F)

Fast

0259.750M

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

50 A

5 s

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

0.512 in (13 mm)

Pico

0.512 x 0.315 in (13 x 8 mm)

0.315 in (8 mm)

EN; IEC; UL

125 °C (257 °F)

Fast

0209.750MXP

Littelfuse

Electric Fuse

Inline/Holder

350 V

750 mA

End Cap

2.95 J

-55 °C (-67 °F)

Tin

100 A

3 s

2.95

Bulk

0.189 in (4.8 mm)

e3

350 V

2AG

0.177 x 0.57 in (4.5 x 14.48 mm)

0.587 in (14.9 mm)

CE; CUL; UL

125 °C (257 °F)

Time Lag

0324.750HXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

750 mA

Pin Wire

466 mJ

-55 °C (-67 °F)

Tin

35 A

Rated Breaking Capacity at 125 VDC: 10000 A

0.466

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; CSA; UL

125 °C (257 °F)

Fast

KLDR.750

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

750 mA

End Cap

291.1 mJ

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

274.75

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

750 mA

Tab/Blade

90 mJ

-55 °C (-67 °F)

10 kA

Rated Breaking Capacity at 125 VDC: 10000 A

0.25 in (6.35 mm)

0.25 x 0.35 in (6.35 x 8.89 mm)

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

592.750S

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

750 mA

End Cap

Silver

592

e4

0251.750HRT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

Matte Tin

50 A

251

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; TUV; UL

125 °C (257 °F)

Very Fast

0263.750VAT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

750 mA

Pin Wire

41.1 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

0229.750P

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

750 mA

End Cap

2.95 J

-55 °C (-67 °F)

Nickel

35 A

Rated Breaking Capacity at 125 VDC: 10000 A

0.177 in (4.5 mm)

Indicator

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

0203.750H

Littelfuse

Electric Fuse

Through Hole Mount

250 V

750 mA

Pin Wire

327 mJ

-55 °C (-67 °F)

Tin Lead

50 A

4 h

0.327

0.372 in (9.45 mm)

0.25 in (6.35 mm)

e0

250 V

0.372 x 0.25 x 0.165 in (9.45 x 6.35 x 4.19 mm)

0.165 in (4.19 mm)

CSA; UL

125 °C (257 °F)

Slow

0253.750PAT3

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 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

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; QPL; TUV; UL

125 °C (257 °F)

Very Fast

0251.750MRT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

Matte Tin

50 A

251

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; TUV; UL

125 °C (257 °F)

Very Fast

0253.750NRT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 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; TUV; UL

125 °C (257 °F)

Very Fast

324.750P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

750 mA

Pin Wire

466 mJ

Matte Tin

35 A

324P

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

Fast

02200037DAT1P

Littelfuse

Electric Fuse

Through Hole Mount

300 V

750 mA

Pin Wire

1.05 J

-55 °C (-67 °F)

Tin

35 A

4 h

1.05

0.177 in (4.5 mm)

Supplemental

e3

300 V

2AG

0.177 x 0.57 in (4.5 x 14.48 mm)

0.57 in (14.48 mm)

CE, UL

125 °C (257 °F)

04910.750MAT1

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 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

KLKD3/4

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

750 mA

End Cap

234 mJ

-55 °C (-67 °F)

100 kA

63 µs

Rated Breaking Capacity at 600 VDC: 50000 A

Bulk

0.406 in (10.31 mm)

170 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

KLKD.750.T

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

750 mA

End Cap

234 mJ

-55 °C (-67 °F)

100 kA

4 m

Pre Arcing Time: Clear within 4 m at 200% Rated Current; Rated Breaking Capacity at 600 VDC: 50000 A

Bulk

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; UL

125 °C (257 °F)

Fast

02620.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.235 in (5.97 mm)

Micro

0.29 in (7.37 mm)

CSA; UL

125 °C (257 °F)

Very Fast

02680.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.235 in (5.97 mm)

Micro

0.29 in (7.37 mm)

CSA; UL

125 °C (257 °F)

Very Fast

02730.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

56.3 mJ

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.25 in (6.35 mm)

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

0266.750VXT

Littelfuse

Electric Fuse

Through Hole Mount

125 V

750 mA

Pin Wire

-55 °C (-67 °F)

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

0.093 in (2.36 mm)

Pico

0.28 in (7.11 mm)

CSA; QPL

125 °C (257 °F)

Very Fast

0265.750VXT

Littelfuse

Electric Fuse

Through Hole Mount

125 V

750 mA

Pin Wire

-55 °C (-67 °F)

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A

Bulk

0.093 in (2.36 mm)

Pico

0.28 in (7.11 mm)

CSA; QPL

125 °C (257 °F)

Very Fast

02790.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

56.3 mJ

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.25 in (6.35 mm)

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

0BLS.750T

Littelfuse

Electric Fuse

Inline/Holder

600 V

750 mA

End Cap

10 kA

2 m

Bulk

0.406 in (10.31 mm)

0.394 x 1.378 in (10 x 35 mm)

1.375 in (34.925 mm)

CSA; UL

Fast

02730.750H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

56.3 mJ

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.25 in (6.35 mm)

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

02720.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

56.3 mJ

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.235 in (5.97 mm)

Micro

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

02740.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

56.3 mJ

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.25 in (6.35 mm)

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

Very Fast

02780.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

56.3 mJ

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.235 in (5.97 mm)

Micro

0.287 in (7.3 mm)

CSA; QPL; UL

125 °C (257 °F)

Very Fast

03080.75.UR

Littelfuse

Electric Fuse

Surface Mount

24 V

30 V

750 mA

Wraparound

48 mJ

-40 °C (-40 °F)

50 A

1 m

Tape And Reel

0.213 in (5.4 mm)

0.15 in (3.8 mm)

0.144 in (3.65 mm)

CUL; IEC; UL

70 °C (158 °F)

01570.750DRT

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

750 mA

Wraparound

904 mJ

-55 °C (-67 °F)

50 A

20 ms

Tape And Reel

0.256 in (6.5 mm)

0.106 in (2.69 mm)

Nano

0.106 in (2.69 mm)

CUL; PSE; UL

125 °C (257 °F)

Time Lag

KLKD.750.H

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

750 mA

End Cap

234 mJ

-55 °C (-67 °F)

100 kA

4 m

Pre Arcing Time: Clear within 4 m at 200% Rated Current; Rated Breaking Capacity at 600 VDC: 50000 A

Bulk

0.406 in (10.31 mm)

0.394 x 1.496 in (10 x 38 mm)

1.5 in (38.1 mm)

CSA; UL

125 °C (257 °F)

Fast

R452.750NR

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

750 mA

End Cap

904 mJ

-55 °C (-67 °F)

Tin Lead

50 A

452

Rated Breaking Capacity at 125 VDC: 50 A

Tape And Reel

0.24 in (6.1 mm)

0.106 in (2.69 mm)

e0

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)

Slow

02200061MXP

Littelfuse

Electric Fuse

Inline/Holder

350 V

750 mA

End Cap

1.05 J

-55 °C (-67 °F)

Tin

35 A

1 s

1.05

Bulk

0.189 in (4.8 mm)

Supplemental

e3

350 V

2AG

0.177 x 0.57 in (4.5 x 14.48 mm)

0.587 in (14.9 mm)

CE; UL

125 °C (257 °F)

0253.750PX

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

50 A

1 s

Pre Arcing Time: Open within 1 s at 200% Rated Current

Bulk

0.103 in (2.61 mm)

125 V

Pico

0.28 in (7.11 mm)

CSA; CUL; QPL; TUV; 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.