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 72 DIN 110MM 1000A
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16Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 1 kA 1.05 kVAC 800 VDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 72 Visual Side Indicator Bulk
Littelfuse Specialty Fuses 280A 1250V SIZE 72 Flush End Mtrc Thred
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2Factory Stock Available
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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
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30Factory Stock Available
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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
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80Factory Stock Available
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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
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4Factory Stock Available
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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
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4Factory Stock Available
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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
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4Factory Stock Available
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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
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9Factory Stock Available
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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
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14Factory Stock Available
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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
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30Factory 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 72 US LONG BL 450A
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5Factory 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 700V SIZE 72 US LONG BL 500
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69Factory 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 700V SIZE 72 US LONG BL 550
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38Factory 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 900V FAST BLOW 700A
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2Factory Stock Available
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PSR Specialty Fuses Square Body Blade Fuses Screw Knife Blade Fast Blow Visual Blown Fuse Bulk
Littelfuse Specialty Fuses 900V FAST BLOW 800A
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2Factory Stock Available
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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 72 US LONG BL 900A
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19Factory Stock Available
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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 US LONG BL 1000A
Datasheet
7Factory Stock Available
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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 73 DIN 110MM 315A
Datasheet
1Factory 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 73 Visual Side Indicator Box
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 350A
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22Factory Stock Available
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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
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57Factory Stock Available
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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
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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
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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
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 800A
Datasheet
10Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 800 A 1.3 kVAC 1 kVDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 73 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 900A
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28Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 900 A 1.05 kVAC 800 VDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 73 Visual Side Indicator Bulk
Littelfuse Specialty Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 1100A
Datasheet
4Factory Stock Available
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PSR Specialty Fuses Square Body Fuses 1.1 kA 1.05 kVAC 800 VDC 100 kA, 150 kA Screw Blade / Boltdown Fast Blow 73 Visual Side Indicator Bulk