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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Voltage Rating DC
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Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 71 US LONG BL 200A
Datasheet
9Factory Stock Available
More Info Available
Min.: 3
Mult.: 3

PSR Specialty Fuses Square Body Blade Fuses Screw Knife Blade Fast Blow Visual Blown Fuse Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 71 US LONG BL 350A
Datasheet
27Factory Stock Available
More Info Available
Min.: 3
Mult.: 3

PSR Specialty Fuses Square Body Blade Fuses Screw Knife Blade Fast Blow Visual Blown Fuse Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 250A
Datasheet
16Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 250 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 7 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 280A
Datasheet
37Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 280 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 72 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 315A
Datasheet
20Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 315 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 72 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 350A
Datasheet
14Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 350 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 72 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 400A
Datasheet
10Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 400 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 72 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 550A
Datasheet
21Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 550 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 72 Visual Side Indicator Box
Littelfuse Specialty Fuses 280A 1250V SIZE 72 Flush End Mtrc Thred
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 280 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Stud Threaded Stud Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 400A 1250V SIZE 72 Flush End Mtrc Thred
Datasheet
30Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 400 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Stud Threaded Stud Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 550A 1250VAC SIZE 72 POWER-SPEED FLUSH M
Datasheet
80Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 550 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 250A 1250V SIZE 72 Flush End In Thread
Datasheet
4Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 250 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Stud Threaded Stud Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 280A 1250V SIZE 72 Flush End In Thread
Datasheet
4Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 280 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Stud Threaded Stud Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 450A 1250V SIZE 72 Flush End In Thread
Datasheet
4Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 450 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Stud Threaded Stud Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 500A 1250VAC SIZE 72 POWER-SPEED FLUSH I
Datasheet
9Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 500 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 630A 1250VAC SIZE 72 POWER-SPEED FLUSH I
Datasheet
14Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 630 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 72 US LONG BL 315A
Datasheet
30Factory 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 POWR-SPEED SQB SIZE 72 US LONG BL 450A
Datasheet
5Factory 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 700V SIZE 72 US LONG BL 500
Datasheet
69Factory 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 700V SIZE 72 US LONG BL 550
Datasheet
38Factory 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 POWR-SPEED SQB SIZE 73 DIN 110MM 315A
Datasheet
1Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 315 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 73 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 350A
Datasheet
22Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 350 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 73 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 400A
Datasheet
57Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 400 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 73 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 630A
Datasheet
3Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 630 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 73 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 700A
Datasheet
4Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 700 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 73 Visual Side Indicator Box