Powr-Speed® High-Speed Fuses

Littelfuse Powr-Speed® High-Speed Fuses protect critical power electronics from overcurrents that may cause damage to equipment. Littelfuse high-speed fuses are reliable, fast-acting devices that can reduce the amount of short circuit current and improve the life of power semiconductor devices. Littelfuse Powr-Speed Fuses are engineered with an innovative bridge design, arc-quenching material, and a robust element to provide fast, extreme current limitation.

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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
Resistance
Littelfuse Specialty Fuses 20A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
20On Order
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 20 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 10A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
10Expected 09/04/2026
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 10 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 50A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
12Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 50 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 400A 250VAC 200VDC FF L25S POWR-SPEED
Datasheet
11Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 400 A 250 VAC 200 VDC 20 kA at 200 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 50A 500VAC 450VDC FF L50S POWR-SPEED
Datasheet
93Stock Available
More Info Available
Min.: 1
Mult.: 1

L50S Specialty Fuses Round Body Blade Fuses 50 A 500 VAC 450 VDC 20 kA at 450 VDC Stud Bolt Down Fast Blow 5AG Without Indicator Bulk
Littelfuse Specialty Fuses 300A 700VAC 650VDC FF L70S POWR-SPEED
Datasheet
63Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L70S Specialty Fuses Round Body Blade Fuses 300 A 700 VAC 650 VDC 20 kA at 650 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 315A 1250VAC SIZE 71 POWER-SPEED FLUSH M
Datasheet
582Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 315 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 US LONG BL 315A
Datasheet
469Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Blade Fuses Screw Knife Blade Fast Blow Visual Blown Fuse Box
Littelfuse Specialty Fuses 40A 150VAC VDC FF L15S POWR-SPEED
Datasheet
53Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L15S Specialty Fuses Cartridge Fuses 40 A 150 VAC 100 VDC Holder Clip Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 50A 150VAC VDC FF L15S POWR-SPEED
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L15S Specialty Fuses Cartridge Fuses 50 A 150 VAC 100 VDC Holder Clip Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 60A 150VAC VDC FF L15S POWR-SPEED
Datasheet
34Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L15S Specialty Fuses Cartridge Fuses 60 A 150 VAC 100 VDC Holder Clip Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 45A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
10Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 45 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 70A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
1Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 70 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 80A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
33Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 80 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 90A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
23Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 90 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 100A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
66Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 100 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 175A 250VAC 250VDC FF L25S POWR-SPEED
Datasheet
6Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 175 A 250 VAC 250 VDC 20 kA at 250 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 225A 250VAC 200VDC FF L25S POWR-SPEED
Datasheet
3Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 225 A 250 VAC 200 VDC 20 kA at 200 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 250A 250VAC 200VDC FF L25S POWR-SPEED
Datasheet
3Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 250 A 250 VAC 200 VDC 20 kA at 200 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 350A 250VAC 200VDC FF L25S POWR-SPEED
Datasheet
5Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L25S Specialty Fuses Round Body Blade Fuses 350 A 250 VAC 200 VDC 20 kA at 200 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 450A 250VAC 200VDC FF L25S POWR-SPEED
Datasheet
13Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

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

L25S Specialty Fuses Round Body Blade Fuses 500 A 250 VAC 200 VDC 20 kA at 200 VDC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 325A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
7Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L50QS Specialty Fuses Round Body Fuses 325 A 500 VAC 500 VDC 200 kA at 500 VAC Stud Bolt Down Fast Blow 38.1 mm x 110.31 mm Without Indicator Bulk
Littelfuse Specialty Fuses 90A 700VAC 700VDC FF L70QS POWR-SPEED
Datasheet
14Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L70QS Specialty Fuses Round Body Fuses 90 A 700 VAC 700 VDC 200 kA at 700 VAC Stud Bolt Down Fast Blow Without Indicator Bulk
Littelfuse Specialty Fuses 225A 700VAC 700VDC FF L70QS POWR-SPEED
Datasheet
38Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

L70QS Specialty Fuses Round Body Fuses 225 A 700 VAC 700 VDC 200 kA at 700 VAC Stud Bolt Down Fast Blow Without Indicator Bulk