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 Industrial & Electrical Fuses POWR-SPEED SQB SIZE 71 DIN 110MM 500A
Datasheet
13Factory Stock Available
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Min.: 3
Mult.: 3

Semiconductor Fuses 500 A 1.2 kVAC Fast-Acting Fuses 900 VDC 100 kA, 150 kA Blade / Bolt Class aR Fuses 71 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 160A 1250VAC SIZE 71 POWER-SPEED FLUSH M
Datasheet
10Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 160 A 1.3 kVAC Fast-Acting Fuses 1 kVDC Quick Connect Class aR Fuses 71 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 160A 1250VAC SIZE 71 POWER-SPEED FLUSH I
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 160 A 1.3 kVAC Fast-Acting Fuses 1 kVDC Quick Connect Class aR Fuses 71 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 200A 1250VAC SIZE 71 POWER-SPEED FLUSH I
Datasheet
2Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 200 A 1.3 kVAC Fast-Acting Fuses 1 kVDC 100 kA Quick Connect Class aR Fuses 71 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 350A 1250VAC SIZE 71 POWER-SPEED FLUSH I
Datasheet
1Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 350 A 1.3 kVAC Fast-Acting Fuses 1 kVDC Quick Connect Class aR Fuses 71 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 900V FAST BLOW 500A
Datasheet
3Factory Stock Available
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Min.: 3
Mult.: 3

Semiconductor Fuses 500 A Fast-Acting Fuses Knife Blade Class aR Fuses 71 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 900V FAST BLOW 550A
Datasheet
9Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 550 A Fast-Acting Fuses Knife Blade Class aR Fuses 71 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 700A
Datasheet
26Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 700 A 1.3 kVAC Fast-Acting Fuses 900 VDC 100 kA, 150 kA Blade / Bolt Class aR Fuses 72 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 DIN 110MM 900A
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 900 A 1.05 kVAC Fast-Acting Fuses 900 VDC 100 kA, 150 kA Blade / Bolt Class aR Fuses 72 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 280A 1250V SIZE 72 Flush End Mtrc Thred
Datasheet
2Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 280 A 1.3 kVAC Fast-Acting Fuses 1 kVDC 100 kA, 150 kA Threaded Class aR Fuses 72 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 550A 1250VAC SIZE 72 POWER-SPEED FLUSH M
Datasheet
30Factory Stock Available
More Info Available
Min.: 2
Mult.: 2

Semiconductor Fuses 550 A 1.3 kVAC Fast-Acting Fuses 1 kVDC Quick Connect Class aR Fuses 72 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 500A 1250VAC SIZE 72 POWER-SPEED FLUSH I
Datasheet
9Factory Stock Available
More Info Available
Min.: 2
Mult.: 2

Semiconductor Fuses 500 A 1.3 kVAC Fast-Acting Fuses 1 kVDC Quick Connect Class aR Fuses 72 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 700V SIZE 72 US LONG BL 500
Datasheet
42Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 500 A Fast-Acting Fuses Knife Blade Class aR Fuses 72 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 700V SIZE 72 US LONG BL 550
Datasheet
36Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 550 A Fast-Acting Fuses Knife Blade Class aR Fuses 72 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 900V FAST BLOW 700A
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 700 A Fast-Acting Fuses Knife Blade Class aR Fuses 72 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 72 US LONG BL 1000A
Datasheet
7Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 1 kA Fast-Acting Fuses Knife Blade Class aR Fuses 72 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 73 DIN 110MM 800A
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

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

Semiconductor Fuses 1.1 kA 1.05 kVAC Fast-Acting Fuses 800 VDC 100 kA, 150 kA Blade / Bolt Class aR Fuses 73 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 450A 1250V SIZE 73 Flush End Mtrc Thred
Datasheet
4Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 450 A 1.3 kVAC Fast-Acting Fuses 1 kVDC 100 kA, 150 kA Threaded Class aR Fuses 73 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 550A 1250V SIZE 73 Flush End Mtrc Thred
Datasheet
4Factory Stock Available
More Info Available
Min.: 2
Mult.: 2

Semiconductor Fuses 550 A 1.3 kVAC Fast-Acting Fuses 1 kVDC 100 kA, 150 kA Threaded Class aR Fuses 73 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 400A 1250V SIZE 73 Flush End In Thread
Datasheet
24Factory Stock Available
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Min.: 1
Mult.: 1

Semiconductor Fuses 400 A 1.3 kVAC Fast-Acting Fuses 1 kVDC 100 kA, 150 kA Threaded Class aR Fuses 73 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 500A 1250V SIZE 73 Flush End In Thread
Datasheet
2Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 500 A 1.3 kVAC Fast-Acting Fuses 1 kVDC 100 kA, 150 kA Threaded Class aR Fuses 73 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses 900V FAST BLOW 900A
Datasheet
9Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

Semiconductor Fuses 900 A Fast-Acting Fuses Knife Blade Class aR Fuses 73 Visual Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 33 DIN 80MM 500A
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 500 A 700 VAC Fast-Acting Fuses 600 VDC 150 kA, 200 kA Blade / Bolt Class aR Fuses 33 Visual Side Indicator Bulk PSR
Littelfuse Industrial & Electrical Fuses POWR-SPEED SQB SIZE 73 US LONG BL 315A
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1
Mult.: 1

Semiconductor Fuses 315 A Fast-Acting Fuses Knife Blade Class aR Fuses 73 Visual Indicator Bulk PSR