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 250A 700VAC SIZE 30 POWER-SPEED FLUSH M
Datasheet
6In Stock
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 250 A 700 VAC 600 VDC Snap In Quick Connect Fast Blow 30 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 400A 1250VAC SIZE 71 POWER-SPEED FLUSH M
Datasheet
4In Stock
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 400 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 71 Visual Side 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
40In 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 900V FAST BLOW 800A
Datasheet
9In Stock
Min.: 1
Mult.: 1
PSR Specialty Fuses Square Body Blade Fuses Screw Knife Blade Fast Blow Visual Blown Fuse Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 70 DIN 110MM 50A
Datasheet
45In Stock
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 50 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 70 Visual Side Indicator Box
Littelfuse Specialty Fuses 100A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
76In Stock
Min.: 1
Mult.: 1
L50QS Specialty Fuses Round Body Fuses 100 A 500 VAC 500 VDC 200 kA at 500 VAC Stud Bolt Down Fast Blow 25.4 mm x 92.08 mm Without Indicator Bulk
Littelfuse Specialty Fuses 125A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
44In Stock
Min.: 1
Mult.: 1
L50QS Specialty Fuses Round Body Fuses 125 A 500 VAC 500 VDC 200 kA at 500 VAC Stud Bolt Down Fast Blow 30.94 mm x 92.08 mm Without Indicator Bulk
Littelfuse Specialty Fuses 150A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
53In Stock
Min.: 1
Mult.: 1

L50QS Specialty Fuses Round Body Fuses 150 A 500 VAC 500 VDC 200 kA at 500 VAC Stud Bolt Down Fast Blow 30.94 mm x 92.08 mm Without Indicator Bulk
Littelfuse Specialty Fuses 200A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
52In Stock
Min.: 1
Mult.: 1

L50QS Specialty Fuses Round Body Fuses 200 A 500 VAC 500 VDC 200 kA at 500 VAC Stud Bolt Down Fast Blow 30.94 mm x 92.08 mm Without Indicator Bulk
Littelfuse Specialty Fuses 250A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
30In Stock
Min.: 1
Mult.: 1

L50QS Specialty Fuses Round Body Fuses 250 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 300A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
54In Stock
Min.: 1
Mult.: 1

L50QS Specialty Fuses Round Body Fuses 300 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 350A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
75In Stock
Min.: 1
Mult.: 1

L50QS Specialty Fuses Round Body Fuses 350 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 500A 500VAC 500VDC FF L50QS POWR-SPEED
Datasheet
16In Stock
Min.: 1
Mult.: 1

L50QS Specialty Fuses Round Body Fuses 500 A 500 VAC 500 VDC 200 kA at 500 VAC Stud Bolt Down Fast Blow 50.8 mm x 113.49 mm Without Indicator Bulk
Littelfuse Specialty Fuses 150A 700VAC 700VDC FF L70QS POWR-SPEED
Datasheet
33In Stock
Min.: 1
Mult.: 1

L70QS Specialty Fuses Round Body Fuses 150 A 700 VAC 700 VDC 200 kA at 700 VAC Stud Bolt Down Fast Blow Without Indicator Bulk