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

02200061DAT1P

Littelfuse

Electric Fuse

Through Hole Mount

350 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

350 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)

0251.750MRL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

Matte Tin

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A

0.153

Tape And Reel

0.11 in (2.8 mm)

Supplemental

e3

125 V

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

0263.750HAT1HF

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

KLDR.750HXP

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

Bulk

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

0263.750VXT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

750 mA

Pin Wire

41.1 mJ

-55 °C (-67 °F)

Pure Tin

50 A

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

0251.750MRHF

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

0473.750PRT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

760 mJ

-60 °C (-76 °F)

Tin

50 A

2 ms

Pre Arcing Time: Blow within 0.002 s at 800% Rated Current

0.76

Tape And Reel

0.135 in (3.43 mm)

e3

125 V

Pico

0.135 x 0.28 in (3.43 x 7.11 mm)

0.28 in (7.11 mm)

CSA; UL

125 °C (257 °F)

Time Delay

0481.750VXLM

Littelfuse

Electric Fuse

Inline/Holder

125 V

125 V

750 mA

End Cap

1.32 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

255.750

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

Tin Lead Over Copper

0.095 in (2.41 mm)

e0

0.095 x 0.28 in (2.41 x 7.11 mm)

0.28 in (7.11 mm)

Fast

0325.750MXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

750 mA

Pin Wire

13 J

-55 °C (-67 °F)

Tin

100 A

5 s

Rated Breaking Capacity at 125 VDC: 10000 A

7

Bulk

0.275 in (6.985 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)

Time Delay

02200061ERT1P

Littelfuse

Electric Fuse

Through Hole Mount

350 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

350 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)

0251.750NAT1

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, Pre Arcing Time: Open within 1000 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; QPL; TUV; UL

125 °C (257 °F)

Very Fast

0251.750HX

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 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; TUV; UL

125 °C (257 °F)

Very Fast

0253.750VXL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

Pure Tin

50 A

253

Rated Breaking Capacity at 125 VDC: 300 A

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; QPL; TUV; UL

125 °C (257 °F)

Very Fast

0483.750DR

Littelfuse

Electric Fuse

Surface Mount

75 V

75 V

750 mA

Wraparound

150 mJ

-55 °C (-67 °F)

Copper/Nickel/Tin

50 A

5 s

Pre Arcing Time: Open within 5 s at 250% Rated Current

Tape And Reel

0.13 in (3.302 mm)

0.062 in (1.575 mm)

e2

75 V

1206

0.046 in (1.1684 mm)

UL

125 °C (257 °F)

0473.750

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

760 mJ

-55 °C (-67 °F)

Tin Lead

50 A

Rated Breaking Capacity at 125 VDC: 50 A

Tape And Reel

0.125 in (3.17 mm)

e0

0.125 x 0.28 in (3.17 x 7.11 mm)

0.28 in (7.11 mm)

CSA; METI; PSE; UL

125 °C (257 °F)

Slow

0473.750YXT1HF

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

760 mJ

-55 °C (-67 °F)

Pure Tin

50 A

Bulk

0.135 in (3.43 mm)

0.135 x 0.28 in (3.43 x 7.11 mm)

0.28 in (7.11 mm)

CSA; UL

125 °C (257 °F)

Time Lag

02200037MXP

Littelfuse

Electric Fuse

Inline/Holder

300 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

300 V

2AG

0.177 x 0.57 in (4.5 x 14.48 mm)

0.587 in (14.9 mm)

CE

125 °C (257 °F)

0473.750PAT1L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

760 mJ

-60 °C (-76 °F)

Tin

50 A

2 ms

Pre Arcing Time: Blow within 0.002 s at 800% Rated Current

0.76

Ammo Pack

0.135 in (3.43 mm)

e3

125 V

Pico

0.135 x 0.28 in (3.43 x 7.11 mm)

0.28 in (7.11 mm)

CSA; UL

125 °C (257 °F)

Time Delay

02200037DRT1P

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)

0251.750NXT1

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, 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; QPL; TUV; UL

125 °C (257 °F)

Very Fast

0230.750MXSP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

750 mA

Pin Wire

2.95 J

-55 °C (-67 °F)

Matte Tin

35 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; UL

125 °C (257 °F)

Time Lag

0325.750MXF31P

Littelfuse

Electric Fuse

Through Hole Mount

250 V

750 mA

Pin Wire

13 J

-55 °C (-67 °F)

Tin

4 h

7

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, UL

125 °C (257 °F)

Time Lag

0672.750

Littelfuse

Electric Fuse

Through Hole Mount

250 V

750 mA

Pin Wire

254 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

0253.750MAT3L

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

Pure Tin

50 A

253

Rated Breaking Capacity at 125 VDC: 300 A

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; QPL; TUV; UL

125 °C (257 °F)

Very Fast

277.750

Littelfuse

Electric Fuse

125 V

125 V

750 mA

277

0467.750

Littelfuse

Electric Fuse

Surface Mount

32 V

32 V

750 mA

Wraparound

17.1 mJ

-55 °C (-67 °F)

Tin/Nickel

50 A

200 ms

Pre Arcing Time: Open within 20 ms at 300% Rated Current

0.063 in (1.6 mm)

0.032 in (0.813 mm)

32 V

112 mΩ

0603

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

0263.750VRT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

750 mA

Pin Wire

41.1 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

312.750

Littelfuse

Electric Fuse

Inline/Holder

250 V

250 V

750 mA

End Cap

1.84 J

Tin Lead

35 A

5 s

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

1.84

0.25 in (6.35 mm)

e0

250 V

3AG

0.25 x 1.25 in (6.35 x 31.75 mm)

1.25 in (31.75 mm)

CSA; UL

Fast

0251.750HAT1HF

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

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; TUV; UL

125 °C (257 °F)

Very Fast

0209.750DRT1P

Littelfuse

Electric Fuse

Inline/Holder

350 V

750 mA

End Cap

-55 °C (-67 °F)

Tin

100 A

4 h

2.95

Tape And Reel

0.177 in (4.5 mm)

e3

350 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)

Time Lag

0603SFV075F/32

Littelfuse

Electric Fuse

Surface Mount

32 V

750 mA

Wraparound

50 A

0.069 in (1.75 mm)

0.037 in (0.95 mm)

1 ms

0603

0.019 in (0.48 mm)

UL

Very Fast

0263.750WAT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

750 mA

Pin Wire

41.1 mJ

-55 °C (-67 °F)

Pure Tin

50 A

100 ms

Ammo Pack

0.155 in (3.94 mm)

250 V

Pico

0.155 x 0.28 in (3.94 x 7.11 mm)

CSA, UL

125 °C (257 °F)

Very Fast

278.750

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

90 mJ

-55 °C (-67 °F)

Tin Lead

10 kA

Rated Breaking Capacity at 125 VDC: 10000 A

0.235 in (5.97 mm)

e0

0.235 x 0.287 in (5.97 x 7.3 mm)

0.287 in (7.3 mm)

CSA; UL

125 °C (257 °F)

Very Fast

0266.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

750 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

0251.750PRL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

Matte Tin

50 A

1 s

Rated Breaking Capacity at 125 VDC: 300 A

0.153

Tape And Reel

0.11 in (2.8 mm)

Supplemental

e3

125 V

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

04910.750NRT1

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

Tape And Reel

0.11 in (2.8 mm)

Pico

0.28 in (7.11 mm)

CSA; UL

125 °C (257 °F)

Very Fast

02740.750H

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Wire

56.3 mJ

-55 °C (-67 °F)

10 kA

2 s

Bulk

0.25 in (6.35 mm)

125 V

Micro

0.35 in (8.89 mm)

CSA; QPL; UL

85 °C (185 °F)

Very Fast

0454.750

Littelfuse

Electric Fuse

Surface Mount

125 V

125 V

750 mA

End Cap

904 mJ

-55 °C (-67 °F)

Silver

50 A

Rated Breaking Capacity at 125 VDC: 50 A

Tape And Reel

0.106 in (2.69 mm)

0.106 in (2.69 mm)

e4

0.106 x 0.106 x 0.24 in (2.69 x 2.69 x 6.1 mm)

0.24 in (6.1 mm)

CSA; PSE; UL

125 °C (257 °F)

Fast

0263.750HXT1L

Littelfuse

Electric Fuse

Through Hole Mount

250 V

750 mA

Pin Wire

41.1 mJ

-55 °C (-67 °F)

Pure Tin

50 A

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

0273.750V

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 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

0253.750MRL

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

Tin

50 A

0253

Rated Breaking Capacity at 125 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; QPL; TUV; UL

125 °C (257 °F)

Very Fast

3250.75MVXP

Littelfuse

Electric Fuse

Through Hole Mount

250 V

125 V

750 mA

Pin Wire

7 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; UL

125 °C (257 °F)

Time Lag

0251.750T1

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

153 mJ

-55 °C (-67 °F)

Pure Tin

50 A

0251

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; PSE; UL

125 °C (257 °F)

Very Fast

0314.750MX52LP

Littelfuse

Electric Fuse

Inline/Holder

250 V

750 mA

End Cap

466 mJ

-55 °C (-67 °F)

Nickel

35 A

0.466

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, UL

125 °C (257 °F)

Fast

FM08A125V3/4A

Littelfuse

Electric Fuse

Through Hole Mount

125 V

125 V

750 mA

Pin Wire

300 A

100 ms

Pre Arcing Time: Open within 0.1 s at 300% Rated Current

0.103 in (2.62 mm)

125 V

0.103 x 0.311 in (2.62 x 7.9 mm)

0.311 in (7.9 mm)

MIL-PRF-23419

0229.750HXSP

Littelfuse

Electric Fuse

Inline/Holder

250 V

125 V

750 mA

End Cap

2.95 J

-55 °C (-67 °F)

Tin

35 A

4 h

Rated Breaking Capacity at 125 VDC: 10000 A

2.95

Bulk

0.177 in (4.5 mm)

e3

250 V

2AG

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

0251.750NRHF

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

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.