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 1K V SIZE 71 FLUSH 315A
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12Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 315 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 71 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 400A
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6Factory Stock Available
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Min.: 3
Mult.: 3

PSR Specialty Fuses Square Body Fuses 400 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 71 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 450A
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103Factory Stock Available
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Min.: 3
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PSR Specialty Fuses Square Body Fuses 450 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 71 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 500A
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13Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 500 A 1.2 kVAC 900 VDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 550A
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6Factory Stock Available
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Min.: 3
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PSR Specialty Fuses Square Body Fuses 550 A 1.2 kVAC 900 VDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 630A
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3Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 630 A 1.1 kVAC 900 VDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 160A 1250VAC SIZE 71 POWER-SPEED FLUSH M
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6Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 160 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 160A 1250VAC SIZE 71 POWER-SPEED FLUSH I
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2Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 200 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 200A 1250VAC SIZE 71 POWER-SPEED FLUSH I
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2Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 200 A 1.3 kVAC 1 kVDC 100 kA at 1.3 kVAC Snap In Quick Connect Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 250A 1250VAC SIZE 71 POWER-SPEED FLUSH I
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28Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 250 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 280A 700V SIZE 71 Flush End In. Thred
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6Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 280 A 1.3 kVAC 1 kVDC Holder Quick Connect Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 350A 1250VAC SIZE 71 POWER-SPEED FLUSH I
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3Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 350 A 1.3 kVAC 1 kVDC Snap In Quick Connect Fast Blow 71 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 71 US LONG BL 160A
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3Factory Stock Available
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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 71 US LONG BL 200A
Datasheet
9Factory 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 71 US LONG BL 350A
Datasheet
27Factory Stock Available
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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 71 US LONG BL 450A
Datasheet
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 900V FAST BLOW 550A
Datasheet
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 Bulk
Littelfuse Specialty Fuses 900V FAST BLOW 630A
Datasheet
15Factory 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 Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 250A
Datasheet
16Factory Stock Available
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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
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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
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Min.: 1
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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
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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
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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
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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 POWR-SPEED SQB SIZE 72 DIN 110MM 700A
Datasheet
44Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses Square Body Fuses 700 A 1.3 kVAC 900 VDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 72 Visual Side Indicator Bulk