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 31 US LONG BL 400A
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3Factory 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 31 US LONG BL 500A
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9Factory Stock Available
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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 31 US LONG BL 550A
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3Factory Stock Available
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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 31 US LONG BL 630A
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3Factory Stock Available
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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 31 US LONG BL 800A
Datasheet
12Factory Stock Available
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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 31 US LONG BL 900A
Datasheet
6Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Blade Fuses Screw Knife Blade Fast Blow Visual Blown Fuse Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 US SHRT BL 200A
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12Factory Stock Available
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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 31 US SHRT BL 315A
Datasheet
17Factory Stock Available
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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 31 US SHRT BL 350A
Datasheet
12Factory 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 31 US SHRT BL 500A
Datasheet
23Factory 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 31 US SHRT BL 550A
Datasheet
6Factory 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 31 US SHRT BL 800A
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 31 US SHORT BL 900A
Datasheet
12Factory Stock Available
More Info Available
Min.: 3
Mult.: 3

PSR Specialty Fuses Square Body Blade Fuses Screw Knife Blade Fast Blow Visual Blown Fuse Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 110MM 400A
Datasheet
27Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 400 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 110MM 450A
Datasheet
21Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 450 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 110MM 550A
Datasheet
1Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 550 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 110MM 900A
Datasheet
4Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 900 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 32 DIN 110MM 1500A
Datasheet
11Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 1.5 kA 500 VAC 450 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 80MM 400A
Datasheet
7Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 400 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 80MM 450A
Datasheet
29Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 450 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 80MM 630A
Datasheet
15Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 630 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 80MM 700A
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 700 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 80MM 800A
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 800 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 80MM 900A
Datasheet
26Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 900 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB Size 32 DIN 80MM 1000A
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 1 kA 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 32 Visual Side Indicator Box