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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Voltage Rating DC
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Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 US SHORT BL 630A
Datasheet
3Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 630 A Fast Blow Square Body Blade Fuses Screw Knife Blade 30 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 31 US LONG BL 900A
Datasheet
3Factory Stock Available
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Min.: 3
Mult.: 3

PSR Specialty Fuses 900 A Fast Blow Square Body Blade Fuses Screw Knife Blade 31 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses 1KV SIZE 32 SB 1400A
Datasheet
13Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses 1.4 kA Fast Blow Square Body Blade Fuses Screw Knife Blade 32 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 32 US LONG BL 1500A
Datasheet
7Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 1.5 kA Fast Blow Square Body Blade Fuses Screw Knife Blade 32 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses 700V SIZE 33 LONG BL 2250A
Datasheet
4Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses 2.25 kA Fast Blow Square Body Blade Fuses Screw Knife Blade 33 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 500A
Datasheet
13Factory Stock Available
More Info Available
Min.: 3
Mult.: 3

PSR Specialty Fuses 500 A 1.2 kVAC Fast Blow 900 VDC 100 kA, 150 kA Square Body Blade Fuses Screw Blade / Boltdown 71 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses 900V FAST BLOW 500A
Datasheet
3Factory Stock Available
More Info Available
Min.: 3
Mult.: 3

PSR Specialty Fuses 500 A Fast Blow Square Body Blade Fuses Screw Knife Blade 71 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses 900V FAST BLOW 550A
Datasheet
9Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 550 A Fast Blow Square Body Blade Fuses Screw Knife Blade 71 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 700A
Datasheet
21Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 700 A 1.3 kVAC Fast Blow 900 VDC 100 kA, 150 kA Square Body Blade Fuses Screw Blade / Boltdown 72 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 900A
Datasheet
2Factory Stock Available
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Min.: 1
Mult.: 1

PSR Specialty Fuses 900 A 1.05 kVAC Fast Blow 900 VDC 100 kA, 150 kA Square Body Blade Fuses Screw Blade / Boltdown 72 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses 900V FAST BLOW 700A
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 700 A Fast Blow Square Body Blade Fuses Screw Knife Blade 72 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 US LONG BL 1000A
Datasheet
7Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 1 kA Fast Blow Square Body Blade Fuses Screw Knife Blade 72 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 800A
Datasheet
5Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 800 A 1.3 kVAC Fast Blow 1 kVDC 100 kA, 150 kA Square Body Blade Fuses Screw Blade / Boltdown 73 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 1100A
Datasheet
4Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 1.1 kA 1.05 kVAC Fast Blow 800 VDC 100 kA, 150 kA Square Body Blade Fuses Screw Blade / Boltdown 73 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses 900V FAST BLOW 900A
Datasheet
9Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

PSR Specialty Fuses 900 A Fast Blow Square Body Blade Fuses Screw Knife Blade 73 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 33 DIN 80MM 500A
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 500 A 700 VAC Fast Blow 600 VDC 150 kA, 200 kA Square Body Blade Fuses Screw Blade / Boltdown 33 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses 315A 1250VAC SIZE 71 POWER-SPEED FLUSH M
Datasheet
Non-Stocked Lead-Time 8 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 315 A 1.3 kVAC Fast Blow 1 kVDC Square Body Blade Fuses Snap In Quick Connect 71 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 73 US LONG BL 315A
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 315 A Fast Blow Square Body Blade Fuses Screw Knife Blade 73 Visual Blown Fuse Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 40A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 40 A 700 VAC Fast Blow 600 VDC 150 kA, 200 kA Square Body Blade Fuses Screw Blade / Boltdown 30 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 50A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 50 A 700 VAC Fast Blow 600 VDC 150 kA, 200 kA Square Body Blade Fuses 30 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 63A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 63 A 700 VAC Fast Blow 600 VDC 150 kA, 200 kA Square Body Blade Fuses Screw Blade / Boltdown 30 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 80A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 80 A 700 VAC Fast Blow 600 VDC 150 kA, 200 kA Square Body Blade Fuses Screw Blade / Boltdown 30 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 100A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 100 A 700 VAC Fast Blow 600 VDC 150 kA, 200 kA Square Body Blade Fuses Screw Blade / Boltdown 30 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 125A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 125 A 700 VAC Fast Blow 600 VDC 150 kA, 200 kA Square Body Blade Fuses Screw Blade / Boltdown 30 Visual Side Indicator Bulk
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 30 DIN 110MM 160A
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 1
Mult.: 1

PSR Specialty Fuses 160 A 700 VAC Fast Blow 600 VDC 150 kA, 200 kA Square Body Blade Fuses Screw Blade / Boltdown 30 Visual Side Indicator Bulk