PSR High-Speed Square Body Fuses

Littelfuse PSR Series High-Speed Square Body Fuses are specially designed for the protection of power semiconductor devices. The fuses from Littelfuse combine extreme current limitation benefits with balanced performance levels to meet the precise requirements for protecting sensitive power electronics devices. These devices include diodes, triacs, IGBTs, SCRs, MOSFETs, and other solid-state devices that are typically designed for power conversion and power conditioning equipment.

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Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 250A
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5Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 250 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 400A
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3Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 400 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 450A
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15Factory Stock Available
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Min.: 1
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PSR Specialty Fuses Square Body Fuses 450 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 700A
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20Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 700 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 110MM 800A
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3Factory Stock Available
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Min.: 3
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PSR Specialty Fuses Square Body Fuses 800 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 200A
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27Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 200 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 250A
Datasheet
15Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 250 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 350A
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6Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 350 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 400A
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9Factory 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 31 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 DIN 80MM 800A
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6Factory Stock Available
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Min.: 3
Mult.: 3

PSR Specialty Fuses Square Body Fuses 800 A 700 VAC 600 VDC 150 kA, 200 kA Screw Blade / Boltdown Fast Blow 31 Visual Side Indicator Box
Littelfuse Specialty Fuses 315A 700V SIZE 31 Flush End Mtrc Thred
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3Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 315 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 400A 700V SIZE 31 Flush End Mtrc Thred
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276Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 400 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 500A 700V SIZE 31 Flush End Mtrc Thred
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122Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 500 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 550A 700V SIZE 31 Flush End Mtrc Thred
Datasheet
3Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 550 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 800A 700V SIZE 31 Flush End Mtrc Thred
Datasheet
9Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 800 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 315A 700V SIZE 31 Flush End In. Thred
Datasheet
1Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 315 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 350A 700V SIZE 31 Flush End In. Thred
Datasheet
33Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 350 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 450A 700V SIZE 31 Flush End In. Thred
Datasheet
15Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 450 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 550A 700V SIZE 31 Flush End In. Thred
Datasheet
18Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 550 A 700 VAC 600 VDC Holder Quick Connect Fast Blow 31 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 31 US LONG BL 200A
Datasheet
6Factory 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 250A
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9Factory Stock Available
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Min.: 1
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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 400A
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3Factory Stock Available
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Min.: 1
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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
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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
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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
Datasheet
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