Littelfuse Fuses 1,824

Reset All
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

LA30QS90-4

Littelfuse

Electric Fuse

Inline/Holder

300 V

300 V

90 A

Tab/Blade

3.2 J

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

1.22 in (31 mm)

1.22 x 1.63 in (31 x 41.4 mm)

1.63 in (41.4 mm)

UL

Very Fast

LA50P10004

Littelfuse

Electric Fuse

Inline/Holder

500 V

450 V

1 kA

200 kA

LA50P

Rated Breaking Capacity at 450 VDC: 20000 A

CSA; UL

Fast

LA50P12004

Littelfuse

Electric Fuse

Inline/Holder

500 V

450 V

1.2 kA

200 kA

LA50P

Rated Breaking Capacity at 450 VDC: 20000 A

CSA; UL

Fast

LA50P9004

Littelfuse

Electric Fuse

Inline/Holder

500 V

450 V

900 A

200 kA

LA50P

Rated Breaking Capacity at 450 VDC: 20000 A

CSA; UL

Fast

LA50QS100-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

100 A

Tab/Blade

4.4 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1 in (25.4 mm)

500 V

1 x 2.13 in (25.4 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS1000-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

1 kA

Tab/Blade

560 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

3 in (76.2 mm)

500 V

3 x 3.22 in (76.2 x 81.8 mm)

3.22 in (81.8 mm)

CSA; UL

Fast

LA50QS1200-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

1.2 kA

Tab/Blade

930 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

3 in (76.2 mm)

500 V

3 x 3.22 in (76.2 x 81.8 mm)

3.22 in (81.8 mm)

CSA; UL

Fast

LA50QS125-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

125 A

Tab/Blade

5.6 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.22 in (31 mm)

500 V

1.22 x 2.13 in (31 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS150-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

150 A

Tab/Blade

9 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.22 in (31 mm)

500 V

1.22 x 2.13 in (31 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS175-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

175 A

Tab/Blade

15 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.22 in (31 mm)

500 V

1.22 x 2.13 in (31 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS200-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

200 A

Tab/Blade

20 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.22 in (31 mm)

500 V

1.22 x 2.13 in (31 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS225-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

225 A

Tab/Blade

25 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.5 in (38.1 mm)

500 V

1.5 x 2.091 in (38.1 x 53.1 mm)

2.091 in (53.1 mm)

CSA; UL

Fast

LA50QS250-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

250 A

Tab/Blade

29 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.5 in (38.1 mm)

500 V

1.5 x 2.091 in (38.1 x 53.1 mm)

2.091 in (53.1 mm)

CSA; UL

Fast

LA50QS300-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

300 A

Tab/Blade

55 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.5 in (38.1 mm)

500 V

1.5 x 2.091 in (38.1 x 53.1 mm)

2.091 in (53.1 mm)

CSA; UL

Fast

LA50QS35-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

35 A

Tab/Blade

560 mJ

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1 in (25.4 mm)

500 V

1 x 2.13 in (25.4 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS350-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

350 A

Tab/Blade

88 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.5 in (38.1 mm)

500 V

1.5 x 2.091 in (38.1 x 53.1 mm)

2.091 in (53.1 mm)

CSA; UL

Fast

LA50QS40-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

40 A

Tab/Blade

690 mJ

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1 in (25.4 mm)

500 V

1 x 2.13 in (25.4 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS400-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

400 A

Tab/Blade

98 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1.5 in (38.1 mm)

500 V

1.5 x 2.091 in (38.1 x 53.1 mm)

2.091 in (53.1 mm)

CSA; UL

Fast

LA50QS450-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

450 A

Tab/Blade

130 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

2 in (50.8 mm)

500 V

2 x 2.22 in (50.8 x 56.4 mm)

2.22 in (56.4 mm)

CSA; UL

Fast

LA50QS50-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

50 A

Tab/Blade

1.1 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1 in (25.4 mm)

500 V

1 x 2.13 in (25.4 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS500-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

500 A

Tab/Blade

160 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

2 in (50.8 mm)

500 V

2 x 2.22 in (50.8 x 56.4 mm)

2.22 in (56.4 mm)

CSA; UL

Fast

LA50QS60-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

60 A

Tab/Blade

1.8 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1 in (25.4 mm)

500 V

1 x 2.13 in (25.4 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS600-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

600 A

Tab/Blade

220 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

2 in (50.8 mm)

500 V

2 x 2.22 in (50.8 x 56.4 mm)

2.22 in (56.4 mm)

CSA; UL

Fast

LA50QS70-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

70 A

Tab/Blade

1.9 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1 in (25.4 mm)

500 V

1 x 2.13 in (25.4 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS700-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

700 A

Tab/Blade

270 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

2.5 in (63.5 mm)

500 V

2.5 x 2.22 in (63.5 x 56.4 mm)

2.22 in (56.4 mm)

CSA; UL

Fast

LA50QS80-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

80 A

Tab/Blade

2.6 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1 in (25.4 mm)

500 V

1 x 2.13 in (25.4 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS800-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

800 A

Tab/Blade

360 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

2.5 in (63.5 mm)

500 V

2.5 x 2.22 in (63.5 x 56.4 mm)

2.22 in (56.4 mm)

CSA; UL

Fast

LA50QS90-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

90 A

Tab/Blade

3.6 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

1 in (25.4 mm)

500 V

1 x 2.13 in (25.4 x 54.1 mm)

2.13 in (54.1 mm)

CSA; UL

Fast

LA50QS900-4

Littelfuse

Electric Fuse

Inline/Holder

500 V

500 V

900 A

Tab/Blade

500 J

200 kA

Rated Breaking Capacity at 500 VDC: 100000 A

3 in (76.2 mm)

500 V

3 x 3.22 in (76.2 x 81.8 mm)

3.22 in (81.8 mm)

CSA; UL

Fast

LA60Q10-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

10 A

End Cap

110 J

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q12-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

12 A

End Cap

150 J

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q15-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

15 A

End Cap

180 J

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q20-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

20 A

End Cap

330 J

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q25-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

25 A

End Cap

440 J

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q30-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

30 A

End Cap

860 J

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q35-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

35 A

End Cap

1.3 kJ

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q40-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

40 A

End Cap

1.8 kJ

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q5-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

5 A

End Cap

60 J

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60Q8-2

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

8 A

End Cap

70 J

200 kA

Rated Breaking Capacity at 600 VDC: 100000 A

0.406 in (10.32 mm)

0.406 x 1.5 in (10.32 x 38.1 mm)

1.5 in (38.1 mm)

UL

Very Fast

LA60X1200-128

Littelfuse

Electric Fuse

Inline/Holder

600 V

1.2 kA

End Cap

100 kA

3.5 in (88.9 mm)

600 V

3.5 x 3.752 in (88.9 x 95.3 mm)

3.752 in (95.3 mm)

UL

Fast

LA60X1500-128

Littelfuse

Electric Fuse

Inline/Holder

600 V

1.5 kA

End Cap

100 kA

4.488 in (114 mm)

600 V

4.488 x 3.752 in (114 x 95.3 mm)

3.752 in (95.3 mm)

UL

Fast

LA60X1600-128

Littelfuse

Electric Fuse

Inline/Holder

600 V

1.6 kA

End Cap

100 kA

4.488 in (114 mm)

600 V

4.488 x 3.752 in (114 x 95.3 mm)

3.752 in (95.3 mm)

UL

Fast

LA60X1800-128

Littelfuse

Electric Fuse

Inline/Holder

600 V

1.8 kA

End Cap

100 kA

4.488 in (114 mm)

600 V

4.488 x 3.752 in (114 x 95.3 mm)

3.752 in (95.3 mm)

UL

Fast

LA60X2000-128

Littelfuse

Electric Fuse

Inline/Holder

600 V

2 kA

End Cap

100 kA

4.488 in (114 mm)

600 V

4.488 x 3.752 in (114 x 95.3 mm)

3.752 in (95.3 mm)

UL

Fast

LA60X700-128

Littelfuse

Electric Fuse

Inline/Holder

600 V

700 A

End Cap

100 kA

3 in (76.2 mm)

600 V

3 x 3.752 in (76.2 x 95.3 mm)

3.752 in (95.3 mm)

UL

Fast

LA60X800-128

Littelfuse

Electric Fuse

Inline/Holder

600 V

800 A

End Cap

100 kA

3 in (76.2 mm)

600 V

3 x 3.752 in (76.2 x 95.3 mm)

3.752 in (95.3 mm)

UL

Fast

LA70P10004

Littelfuse

Electric Fuse

Inline/Holder

700 V

650 V

1 kA

200 kA

LA70P

Rated Breaking Capacity at 650 VDC: 20000 A

CSA; UL

Fast

LA70P12004

Littelfuse

Electric Fuse

Inline/Holder

700 V

650 V

1.2 kA

200 kA

LA70P

Rated Breaking Capacity at 650 VDC: 20000 A

CSA; UL

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.