1.2 kA Fuses 26

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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

FWJ-1200A

Eaton Corporation

Electric Fuse

Inline/Holder

1 KV

1.2 kA

Tab/Blade

370 kJ

100 kA

Box

3.5 in (88.9 mm)

3.5 x 3.312 in (88.9 x 84.12 mm)

3.312 in (84.12 mm)

UL

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

KLPC1200.X

Littelfuse

Electric Fuse

Inline/Holder

600 V

480 V

1.2 kA

Tab/Blade

200 kA

10.752 in (273.1 mm)

L

600 V

10.752 x 3.752 in (273.1 x 95.3 mm)

3.752 in (95.3 mm)

CE; CSA; UL

Time Lag

JLLS1200.XXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

2.626 in (66.7 mm)

600 V

5.272 in (133.9 mm)

CE; CUL; UL

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

KLLU1200

Littelfuse

Electric Fuse

Inline/Holder

600 V

1.2 kA

Tab/Blade

200 kA

2.5 in (63.5 mm)

L

600 V

2.5 x 3.752 in (63.5 x 95.3 mm)

3.752 in (95.3 mm)

CSA; UL

Time Delay

LA15QS1200-128IL

Littelfuse

Electric Fuse

Inline/Holder

150 V

150 V

1.2 kA

End Cap

680 J

100 kA

Rated Breaking Capacity at 150 VDC: 100000 A

2 in (50.8 mm)

2 x 1.63 in (50.8 x 41.4 mm)

1.63 in (41.4 mm)

UL

Very Fast

0LDC1200.X

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

1.2 kA

Tab/Blade

200 kA

16 ms

Rated Breaking Capacity at 600 VDC: 50000 A

2.5 in (63.5 mm)

L

600 V

2.5 x 3.752 in (63.5 x 95.3 mm)

3.752 in (95.3 mm)

CE, CSA, UL

Fast

JLLN1200P

Littelfuse

Electric Fuse

Inline/Holder

300 V

125 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

2.5 in (63.5 mm)

4 in (101.6 mm)

CSE; CUL; UL

Fast

JLLS1200

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

2.63 in (66.8 mm)

2.63 x 2.299 in (66.8 x 58.4 mm)

2.299 in (58.4 mm)

UL

Fast

L17T1200

Littelfuse

Electric Fuse

Inline/Holder

170 V

1.2 kA

Tab/Blade

L17T

Rated Breaking Capacity at 170 VDC: 100000 A

1.339 in (34 mm)

1.339 in (34 mm)

CSA; UL

Very Fast

JLLS1200.X

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

2.626 in (66.7 mm)

600 V

5.272 in (133.9 mm)

CE; CUL; UL

Fast

JLLN1200.XXP

Littelfuse

Electric Fuse

Inline/Holder

300 V

125 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

2.5 in (63.5 mm)

300 V

4 in (101.6 mm)

CSE; CUL; UL

Fast

JLLN1200.X

Littelfuse

Electric Fuse

Inline/Holder

300 V

125 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

2.5 in (63.5 mm)

300 V

4 in (101.6 mm)

CE; CUL; UL

Fast

JLLN1200

Littelfuse

Electric Fuse

Inline/Holder

300 V

125 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

2.5 in (63.5 mm)

2.5 x 1.031 in (63.5 x 26.2 mm)

4 in (101.6 mm)

CSE; CUL; UL

Fast

L17T1200V

Littelfuse

Electric Fuse

1.2 kA

100 kA

4.059 in (103.1 mm)

170 V

4.059 x 1.339 in (103.1 x 34 mm)

1.339 in (34 mm)

CSA; UL

KLLU1200.X

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

2.5 in (63.5 mm)

3.752 in (95.3 mm)

CE; CSA; UL

Time Delay

LDC1200

Littelfuse

Electric Fuse

Inline/Holder

600 V

600 V

1.2 kA

Tab/Blade

200 kA

16 ms

Rated Breaking Capacity at 600 VDC: 50000 A

2.5 in (63.5 mm)

2.5 x 3.752 in (63.5 x 95.3 mm)

3.752 in (95.3 mm)

CE, CSA, UL

Fast

LA15QS1200-128

Littelfuse

Electric Fuse

Inline/Holder

150 V

150 V

1.2 kA

End Cap

680 J

100 kA

Rated Breaking Capacity at 150 VDC: 100000 A

2 in (50.8 mm)

2 x 1.63 in (50.8 x 41.4 mm)

1.63 in (41.4 mm)

UL

Very 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

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

KLPC1200

Littelfuse

Electric Fuse

Inline/Holder

600 V

480 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 480 VDC: 20000 A

2.5 in (63.5 mm)

2.5 x 3.752 in (63.5 x 95.3 mm)

3.752 in (95.3 mm)

CSA; UL

Time Delay

LA30QS1200-128

Littelfuse

Electric Fuse

Inline/Holder

300 V

300 V

1.2 kA

End Cap

880 J

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

3 in (76.2 mm)

3 x 2.339 in (76.2 x 59.4 mm)

2.339 in (59.4 mm)

UL

Very Fast

JLLS1200XXP

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

2.626 in (66.7 mm)

2.303 in (58.5 mm)

CE; CSA; UL

Fast

JLLS1200X

Littelfuse

Electric Fuse

Inline/Holder

600 V

300 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

Bulk

2.626 in (66.7 mm)

2.303 in (58.5 mm)

CE; CSA; UL

Fast

JLLN1200X

Littelfuse

Electric Fuse

Inline/Holder

300 V

125 V

1.2 kA

Tab/Blade

200 kA

Rated Breaking Capacity at 125 VDC: 20000 A

2.5 in (63.5 mm)

4 in (101.6 mm)

CSE; CUL; 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.