Fast-Acting High-Speed Fuses

Littelfuse Fast-Acting High-Speed Fuses are designed to protect equipment and systems. These fast-acting fuses feature Littelfuse-developed technology that sets standards for accuracy, consistent quality, reliability, and predictable performance. Littelfuse Fast-Acting High-Speed Fuses are optimized for performance and efficiency to better protect critical power semiconductors against short circuits.

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Qty. RoHS ECAD Model Series
Product
Body Style
Current Rating
Voltage Rating AC
Voltage Rating DC
Interrupt Rating
Mounting Style
Termination Style
Fuse Type
Fuse Size/Group
Indicator Style
Packaging
Littelfuse Specialty Fuses 30A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
40In Stock
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 30 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 200A 700VAC 650VDC FF L70S POWR-SPEED
Datasheet
12In Stock
Min.: 1
Mult.: 1

L70S Specialty Fuses Round Body Blade Fuses 200 A 700 VAC 650 VDC 20 kA at 650 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 35A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
3In Stock
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 35 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 40A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
2In Stock
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 40 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 200A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
1In Stock
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 200 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 300A 250VAC 200VDC FF L25S POWR-SPEED
Datasheet
2In Stock
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 300 A 250 VAC 200 VDC 20 kA at 200 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 300A 150VAC 100VDC FF L15S POWR-SPEED
Datasheet
7In Stock
Min.: 1
Mult.: 1
L15S Specialty Fuses Round Body Blade Fuses 300 A 150 VAC 100 VDC 20 kA at 100 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 150A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
4In Stock
Min.: 1
Mult.: 1
L50S Specialty Fuses Round Body Blade Fuses 150 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 500A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
4In Stock
Min.: 1
Mult.: 1
L50S Specialty Fuses Round Body Blade Fuses 500 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 800A 150VAC 100VDC FF L15S POWR-SPEED
Datasheet
7In Stock
Min.: 1
Mult.: 1
L15S Specialty Fuses Round Body Blade Fuses 800 A 150 VAC 100 VDC 20 kA at 100 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 225A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
4In Stock
Min.: 1
Mult.: 1
L50S Specialty Fuses Round Body Blade Fuses 225 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 450A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
1In Stock
Min.: 1
Mult.: 1
L50S Specialty Fuses Round Body Blade Fuses 450 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 35A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
4In Stock
Min.: 1
Mult.: 1
L50S Specialty Fuses Round Body Blade Fuses 35 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 15A 700VAC 650VDC FF L70S POWR-SPEED
Datasheet
2In Stock
Min.: 1
Mult.: 1
L70S Specialty Fuses Round Body Blade Fuses 15 A 700 VAC 650 VDC 20 kA at 650 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 25A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
2In Stock
Min.: 1
Mult.: 1
L50S Specialty Fuses Round Body Blade Fuses 25 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 125A 700VAC 650VDC FF L70S POWR-SPEED
Datasheet
10In Stock
Min.: 1
Mult.: 1
L70S Specialty Fuses Round Body Blade Fuses 125 A 700 VAC 650 VDC 20 kA at 650 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 30A 600VAC VDC FF KLC POWR-SPEED
Datasheet
14In Stock
Min.: 1
Mult.: 1
KLC Specialty Fuses Cartridge Blade Fuses 30 A 600 VAC 200 kA at 600 VAC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 350A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
4In Stock
Min.: 1
Mult.: 1
L50S Specialty Fuses Round Body Blade Fuses 350 A 500 VAC 450 VDC 200 kA at 500 VAC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 90A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
1In Stock
Min.: 1
Mult.: 1
L50S Specialty Fuses Round Body Blade Fuses 90 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 10A 700VAC 650VDC FF L70S POWR-SPEED
Datasheet
1In Stock
Min.: 1
Mult.: 1
L70S Specialty Fuses Round Body Blade Fuses 10 A 700 VAC 650 VDC 20 kA at 650 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 60A 700VAC 650VDC FF L70S POWR-SPEED
Datasheet
5In Stock
Min.: 1
Mult.: 1
L70S Specialty Fuses Round Body Blade Fuses 60 A 700 VAC 650 VDC 20 kA at 650 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 250A 150VAC 100VDC FF L15S POWR-SPEED
Datasheet
72In Stock
Min.: 1
Mult.: 1
L15S Specialty Fuses Round Body Blade Fuses 250 A 150 VAC 100 VDC 20 kA at 100 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 600A 250VAC 200VDC FF L25S POWR-SPEED
Datasheet
9In Stock
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 600 A 250 VAC 200 VDC 20 kA at 200 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 60A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
13In Stock
Min.: 1
Mult.: 1

L50S Specialty Fuses Round Body Blade Fuses 60 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 60A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
1In Stock
45On Order
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 60 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow 5AG Without Indicator Bulk